drinking water surveillance program annual report
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ISSN 0839-9026
OTTAWA (BRITANNIA)WATER TREATMENT PLANT
DRINKING WATER SURVEILLANCEPROGRAM
ANNUAL REPORT 1988
FEBRUARY 1990
©Copyright: Queen's Printer for Ontario, 1990
This publication may be reproduced for non-conunercia seswith appropriate attribution.
EXECUTIVE SUMMARY
DRINKING WATER SURVEILLANCE PROGRAM
OTTAWA (BRITANNIA) WATER TREATMENT PLANT1988 ANNUAL REPORT
The Drinking Water Surveillance Program (DWSP) for Ontario is amonitoring program providing immediate, reliable, currentinformation on drinking water quality. The DWSP officially beganin April 1986 and is designed to eventually include all municipalsupplies in Ontario. Currently, 52 plants are being monitored.
The Ottawa (Britannia) Water Treatment Plant is a conventionaltreatment plant which treats water from the Ottawa River. Theprocess consists of coagulation, f locculation, sedimentation,filtration, disinfection, post pH adjustment and fluoridation.This plant has a design capacity of 247 x 1000 m3/day and inconjunction with the Lemieux Island plant, serves a population ofapproximately 515,000.
Samples of the raw and treated water from the Ottawa (Britannia)Water Treatment Plant plus water samples from two distributionsystem sites were taken on a monthly basis and analyzed forapproximately 160 parameters. Parameters were divided into thefollowing groups Bacteriological, Inorganic and Physical (LaboratoryChemistry, Field Chemistry and Metals) and Organics(Chloroaromatics, Chlorophenols, Pesticide and PCB, Phenolics,Polynuclear Aromatic Hydrocarbons, Specific Pesticides andVolatiles) . Specific Pesticides and Chlorophenols were analysed inJune and November only.
A summary of results is shown in Table 1.
Inorganic and Physical parameters (Laboratory Chemistry, FieldChemistry and Metals) were below any applicable health relatedODWOs
.
Of approximately 110 Organic parameters tested for on a monthlybasis, none exceeded health related guidelines.
During 1988 the DWSP sampling results indicated that the Ottawa(Britannia) Water Treatment Plant produced good quality water atthe plant and this quality was maintained in the distributionsystem.
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DRINKING WATER SURVEILLANCE PROGRAM
OTTAWA (BRITANNIA) WATER TREATMENT PLANT19 88 ANNUAL REPORT
INTRODUCTION
The Drinking Water Surveillance Program (DWSP) for Ontario is a
monitoring program providing immediate, reliable, current
information on drinking water quality. The DWSP officially began
in April 1986 and is designed to eventually include all municipal
supplies in Ontario. Currently, 52 plants are being monitored.
The DWSP was initiated at the Ottawa (Britannia) Water Treatment
Plant in the fall of 1986. Annual reports were published for 1986
(ISBN 0-7729-2550-X) and 1987 (ISSN 0839-9026).
This report contains information and results for 1988.
PLANT DESCRIPTION
The Ottawa (Britannia) Water Treatment Plant is a conventional
treatment plant which treats water from the Ottawa River. The
process consists of coagulation, f locculation, sedimentation,
filtration, disinfection, post pH adjustment and fluoridation. It
has a design capacity of 247.0 x 1000 m3/day and sample day flows
ranging from 77 x 1000 m3/day to 186 x 1000 m3/day. This plant,
in conjunction with the Lemieux Island plant, serves a population
of approximately 515,000.
The plant location is shown in Figure 1. Plant process details,
in a block schematic, are shown in Figure 2. General plant
information is presented in Table 2.
METHODS
Water samples were obtained from four DWSP approved locations;
i) Plant Raw - The water originated from the intake pipe
prior to chlorination and was sampled
through a stainless steel line. The sample tap
is located in the plant laboratory.
ii) Plant Treated - The water originated from the highlift
discharge after addition of all treatment
chemicals and was sampled through a
copper sample line. The sample tap is
located in the plant laboratory,
iii) Distribution System - Site 1 - This house is
approximately 3 kilometers from the plant.
Water was sampled, through copper
plumbing, from the kitchen tap.
iv) Distribution System - Site 2 - This house is
approximately 8 kilometers from the plant.
Water was sampled, through copper
plumbing, from the basement
laundry tap.
Sample lines in the plant were flushed prior to sampling to ensure
that the water obtained was indicative of its origin and not
residual water standing in the sample line.
At all distribution system locations two types of samples were
obtained: a standing and a free flow. The standing sample consisted
of water that had been in the household plumbing and service
connection for a minimum of six hours. These samples are used to
make an assessment of the amount by which the levels of inorganic
compounds and metals may be changed on standing, due to leaching
from (or deposition on) , the plumbing system. The only analyses
carried out on the standing samples therefore, are General
Chemistry and Metals. The free flow sample represented fresh
water from the distribution main that had been flowing at the
sample tap for five minutes before being sampled.
Attempts were made to capture the same block of water at each
sampling point by taking the retention time into consideration.
The retention time was calculated by dividing the volume of water
between the two sampling points by the sample day flow. For
example, if it was determined that the retention time within the
FIGURE 1
DRINKING WATER SURVEILLANCE PROGRAM
SITE LOCATION MAP
OTTAWA (BRITANNIA) WATER TREATMENT PLANT
Figure 2
OTTAWA (BRITANNIA) WATER TREATMEN"OTTAWA RIVER
CHLORINE AND ALUMADDED HERE
PU\NT
INTAKE
SURGE WELL
LOWLIFT CHAMBERS
LOWLIFT PUMPS
ACTIVATED SIUCA
(SODIUM SIUCATE ACTIVATED WITH ALUM)
ADDED HERE
FLOCCULATION TANKS
SEDIMENTATION TANKS
FILTERS
UME ADDED HERE
HYDROFLUOSIUCIC ACID
AND CHLORINEADDED HERE
CLEAR WELLS
HIGHLIFT PUMPS
TABLE 2
DRINKING WATER SURVEILLANCE PROGRAM ANNUAL REPORT
GENERAL INFORMATION
OTTAWA (BRITANNIA) WATER TREATMENT PLANT
LOCATION: CASSELS ROADOTTAWA, ONTARIO(613-828-2727)
SOURCE: RAW WATER SOURCE - OTTAWA RIVER
RATED CAPACITY: 247 (1000 M3/DAY)
OPERATION: MUNICIPAL
PLANT SUPERINTENDENT: A. HARTRY
MINISTRY REGION: SOUTHEASTERN
DISTRICT OFFICER: MR. R.A. DUNN
MUNICIPALITYSERVED
CITY OF OTTAWAGLOUCESTERVANIERNEPEANKANATAGOULBOURN
POPULATION
304,00076,58918,87785,73720,5299,720
plant was five hours then there would be a five hour interval
between the raw and treated sampling. Similarly, if it was
estimated that it took approximately one day for the water to
travel from the plant to the distribution system site, this site
would be sampled one day after the treated water from the plant.
Stringent DWSP sampling protocols were followed to ensure that all
samples were taken in a uniform manner.
Sample day flow, treatment chemical dosages and field measurements
such as Turbidity, Chlorine Residuals, pH and Temperature were
recorded on the day of sampling and were entered onto the DWSP data
base as submitted.
RESULTS
The Ottawa (Britannia) Water Treatment Plant was sampled for
approximately 160 parameters on a monthly basis.
The Specific Pesticides and Chlorophenols scans were sampled in
June and November only. Polynuclear Aromatic Hydrocarbons and
Phenolics are only analysed in the raw and treated water from the
plant. As a result of an unforeseen emergency the laboratory
capacity was exceeded and analysis for volatiles could not be
carried out when the samples were received. Since analysis for
volatiles is no longer valid after four weeks of storage, volatile
results for January or February are not available.
Table 3 contains information on the sample day retention time, flow
rate and treatment chemicals used and their associated dosages.
Table 4 is a summary break-down of the number of water samples
analysed by parameter and by water type. The number of times that
a positive or trace result was detected is also reported.
Positive denotes that the result is greater than the statistical
limit of detection established by the Ministry of the Environment
(MOE) laboratory staff and is quantifiable. Trace (<T) denotes
that the level measured is greater than the lowest value detectable
by the method but lies so close to the detection limit that it
cannot be confidently quantified.
Table 5 presents the results for parameters detected on at least
one occasion.
Table 6 presents parameters analysed in the DWSP.
Associated guidelines and detection limits are also supplied on
tables 5 and 6. Parameters are listed alphabetically within each
DISCUSSION
Water quality is judged by comparison with the Ontario Drinking
Water Objectives (ODWOs) as defined in the 1984 publication (ISBN
0-7743-8985-0) . The Province of Ontario has health related and
aesthetic objectives for 49 parameters, these are currently under
review. When an ODWO is not available guidelines/ limits from other
agencies are consulted. The Parameters Listing System (PALIS)
recently published (ISBN 0-7729-4461 -X) by the MOE catalogues and
keeps current over 1750 guidelines for 650 parameters from agencies
throughout the world.
Although some of the parameters measured on DWSP may be present in
the raw and treated water as a result of pollution, many of the
compounds detected are naturally occuring or are treatment by-
products.
Plant operational personnel address occurrences of taste and odour
or biological water quality parameters. The DWSP does not assess
these aspects of the water supply.
As stated under Results, traces do not indicate quantifiable
results as defined by established MOE laboratory analytical
reporting protocols. While they can be useful in trend analysis
or confirmation of the presence of a specific contaminant that is
repeatedly detected at these levels, the occasional finding of a
trace level of a contaminant is not considered to be significant.
DISCUSSION OF GUIDEUNES AND LIMITS THEREFORE, IS ONLY
CONDUCTED ON POSITIVE RESULTS.
Bacteriology
Positive results for the Bacteriology scan were present seven times
in the treated water, six times in the distribution system Site 1
water and fourteen times in the Site 2 water. In all cases the
positive parameters were Standard Plate Count and Total Coliform
Background.
Standard Plate Count is a test used to supplement routine analysis
for Coliform bacteria. The limit for Standard Plate Count (at 35°C
after 48 hours) in the ODWOs is 500 organisms per mL (based on a
geometric mean of 5 or more samples) . High Standard Plate Counts
were present in the August and November Site 2 water samples. While
no indicators of unsafe water were detected, the high Standard
Plate Count may be indicative of a deterioration in conditions in
the distribution system. A total Chlorine Residual of at least
0.05 mg/L was detected on both occasions however, water
temperature became elevated during the summer months. The high
Standard Plate Counts obtained for the month of August probably
reflect increased bacteriological growth as a result of the
increased temperature.
7
Guidelines for bacteriological sampling and testing of a supply are
developed to maintain a proper supervision of its bacteriological
quality; the routine monitoring program usually requires the taking
of multiple samples in a given system. Full interpretation of
bacteriological quality cannot be made on the basis of single
samples. Further, bacteriological limits were developed in
acknowledgement that the presence of coliforms may be detected due
to their non-uniform distribution throughout the distribution
system and the fact that their enumeration is subject to
considerable variation. Routine bacteriological monitoring, as
outlined in the ODWOs is carried out by the operating authority.
Inorganic and Physical Parameters
Laboratory and Field Chemistry
The results for the Laboratory Chemistry and Field Chemistry scans
were below applicable health related ODWOs.
The Langelier Index is used extensively in estimating the corrosion
potential of water. An increasingly negative index indicates the
increasing possibility of corrosion. It is considered sound
engineering practice to maintain a slightly positive Langelier
Index. The Langelier Index for the Ottawa (Britannia) water with
the exception of April and May is negative.
As part of the treatment plant process, hydrofluosilicic acid is
added to the treated water (Table 3) . Where fluoridation is
practised, the Fluoride concentration recommended in the ODWO is
1.2 mg/L, plus or minus 0.2 mg/L. This level was generally not
maintained. Table 3 indicates that the amount of hydrofluosilicic
acid added was not sufficient to maintain a 1.2 mg/L Fluoride
residual.
It is desirable that the Temperature of drinking water be less than
15°C; the palatability of water is enhanced by its coolness. A
temperature below 15°C will tend to reduce the growth of nuisance
organisms and hence minimize associated taste, colour, odour and
corrosion problems. The temperature of the delivered water may
increase in the distribution system due to the warming effect of
the soil in late summer and fall and/or as a result of higher
temperatures in the source water. The desired ODWO was exceeded
eleven times in the treated water and free flow distributed water.
Calcium, Conductivity and Hardness levels increased in the treated
water as compared to the raw water. These increases are a result
of the addition of Calcium Oxide during the treatment process to
adjust the final pH in the treated water.
Metals
The results reported for the Metals scan were below any applicable
health related ODWOs.
Copper and Iron levels were generally lower in the treated water
as compared to the raw water. This is a result of the treatment
process. The addition of Alum as a coagulant to the raw water and
the resulting coagulation/settling process has been shown to reduce
the levels of most metals.
Elevated levels of Copper, Lead and Zinc were detected in the
standing samples as compared to the free flow distribution samples
thus, indicating that these metals were leached from the household
plumbing as the water stood overnight. The Langelier Index
indicates potential for corrosion and some metals will be leached
in standing samples in most supplies.
At present, there is no evidence that Aluminum is physiologically
harmful and no health limit for drinking water has been specified.
The measure of residual Aluminum in the treated water is important
to indicate the efficiency of the treatment process. The ODWOs
indicate that a useful guideline is to maintain a residual below
100 ug/L as Al in the water leaving the plant to avoid post
precipitation problems. Aluminum values exceeded the ODWO
operational guideline four times in the treated water.
Organic Parameters
Chloroaromatics
10
The results of the Chloroaromatics scan showed that one parameter
was detected:
Hexachloroethane
Hexachloroethane was detected at trace levels, once in the treated
water, twice in the Site 1 water and once in the Site 2 water.
Review of these results, along with past information from other
water supplies on DWSP, would indicate that certain Chloroaromatics
appear more frequently in the treated water than in the raw and
almost always only at trace levels. These occurrences could
possibly be due to a reaction of chlorine with organics present in
the water or in the distribution system.
Chlorophenols
The results of the Chlorophenols scan showed that one parameter
was detected:
2,4, 6-Trichlorophenol
2,4,6-Trichlorophenol was detected at a trace level once in the
treated water.
Pesticides and PCB (Polychlorinated Biphenyl)
The results of the Pesticides and PCB scan showed that no PCBs were
detected and that two pesticides were detected:
Alpha BHC
11
Lindane
There are several isomers of BHC (Benzene Hexachloride) ; gamma BHC
is the active ingredient of the pesticide Lindane, while alpha BHC
is the isomer predominantly found in surface water from the Great
Lakes Basin as indicated in results from other water supplies on
DWSP.
Alpha BHC was detected at trace levels, five times in the raw
water, eight times in the treated water, eight times in the Site
1 water and seven times in the Site 2 water.
Lindane was detected at trace levels, once in the raw water, twice
in the treated water, once in the Site 1 water and twice in the
Site 2 water.
Specific Pesticides
Results of the Specific Pesticides scan showed that no parameters
were detected.
Phenolics
The maximum desirable concentration of phenolic substances in
drinking water is 2.0 ug/L. This limit has been set primarily to
prevent the occurrence of undesirable tastes and odours,
particularly in chlorinated water. Phenolics were detected at
levels ranging from 1.0 ug/L to 9.6 ug/L in the raw and treated
12
water. Phenol ics were detected at trace levels, four times in the
raw water and five times in the treated water. Phenolic compounds
are present in the aquatic environment as a result of natural
and/or industrial processes.
Polynuclear Aromatic Hydrocarbons (PAH)
The results of the PAH scan showed that no PAHs were detected.
Volatiles
The results of the Volatiles scan showed that six parameters, other
than Trihalomethanes(THMs) , were detected:
Benzene
Toluene
Ethylbenzene
Meta and Para-Xylene
Styrene
Tetrachloroethylene
Benzene was detected at trace levels, once in the Site 1 water and
Site 2 water.
Toluene was detected at trace levels, twice in the treated water
and twice in both distribution system water samples. The detection
of toluene at low, trace levels is a laboratory artifact derived
from the analytical methodology. The purge-and-trap analytical
13
technique depends on the purging of the volatile organics in the
water sample with helium gas onto a Tenax trapping column. The
volatile materials are subsequently thermally desorbed, separated
and quantified. Tenax, a toluene-like polymeric material, tends to
decompose sporadically upon heating into toluene and other aromatic
componenets (ethylbenzene and xylene) giving instrument blanks in
the order of 0.05 ug/L.
The detected trace levels of Styrene are also considered to be
laboratory artifacts due to the outgassing of monomeric styrene
from the polystyrene shipping containers. The sporadic background
levels from this source are in the order of 0.05 ug/L.
Ethylbenzene was detected at trace levels, once in the raw water,
four times in the treated water, five times in the Site 1 water
and once in the Site 2 water.
Meta and Para-Xylene are measured as one compound, M-Xylene. They
were detected at a trace level, once in the treated water.
The volatiles listed above are typically found on an occasional
basis at other water supplies included on the DWSP usually at trace
levels.
Tetrachloroethylene was detected at trace levels, once in the
treated water, once in both the Site 1 and Site 2 sample.
14
THMs are acknowledged to be produced during the water treatment
process and will always occur in chlorinated surface waters. THMs
are comprised of Chloroform, Chlorodibromomethane and
Dichlorobromomethane. Bromoform occurs occasionally. Results are
reported for the individual compounds as well as for total THMs.
Chloroform, Dichlorobromomethane and Total THMs were detected in
all treated waters. Chlorodibromomethane was detected at trace
levels, once in the raw water, three times in the treated water and
twice in both the Site 1 and Site 2 water. All Total THM
occurrences, ranging from 46.8 ug/L to 288.5 ug/L were below the
ODWO of 350 ug/L.
THMs were present in three raw water samples taken in 1988 and in
five raw water sample taken in 1987. This would indicate that low
levels of chlorine were present in these samples.
CONCLUSIONS
The Ottawa (Britannia) Water Treatment plant for the sample year
of 1988 produced good guality water at the plant and this was
maintained in the distribution system.
No health related guidelines, for organic or inorganic parameters,
were exceeded during 1986, 1987 or 1988.
15
RECOMMENDATIONS
Two recommendations can be made:
1) During 1988 three raw water samples contained THMs and in 1987
five raw water samples contained THMs. This sample site should be
reassessed to ensure that it still meets the DWSP sampling
protocol.
2) Hydrof luosilicic Acid dosages should be adjusted to ensure that
the recommended fluoride level is maintained in the distributed
water.
16
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KEY TO TABLE 5 and 6
A ONTARIO DRINKING WATER OBJECTIVES (ODWO)1. Maximum Acceptable Concentration (MAC)1+. MAC for Total Trihalomethanes1*. MAC for Bacteriological Analyses
Poor water quality is indicated when :
- total coliform counts > < 5- P/A Bottle Test is present after 48 hours- Aeromonas organisms are detected in more than
25% of samples in a single submission or insuccessive submissions from the same samplingsite
- Pseudomonas Aeruginosa, Staphylococcus Aureusand members of the Fecal Streptococcus groupshould not be detected in any sample
- Standard Plate Count should not exceed 500organisms per ml at 35 °C within 48 hours
2. Interim Maximum Acceptable Concentration (IMAC)3. Maximum Desirable Concentration (MDC)4. Aesthetic or Recommended Operational Guideline
- hardness levels between 80 and 100 mg/L ascalcium carbonate are considered to provide anacceptable balance between corrosion andincrustation, water supplies with a hardness>200 mg/L are considered poor and those inexcess of 500 mg/L are unacceptable.
B HEALTH & WELFARE CANADA (H&W)1. Maximum Acceptable Concentration (MAC)2
.
Proposed MAC3
.
Interim MAC4. Aesthetic Objective (AO) (for xylenes, the AO is
a total)
C WORLD HEALTH ORGANIZATION (WHO)1. Guideline Value (GV)2. Tentative GV3. Aesthetic GV
D US ENVIRONMENTAL PROTECTION AGENCY (EPA)1. Maximum Contaminant Level (MCL)2. Suggested No-Adverse Effect Level (SNAEL)3. Lifetime Health Advisory4. EPA Ambient Water Quality Criteria
F EUROPEAN ECONOMIC COMMUNITY (EEC)1. Health Related Guideline Level2. Aesthetic Guideline Level3. Maximum Admissable Concentration (MADC)
G CALIFORNIA STATE DEPARTMENT OF HEALTH-GUIDELINE VALUE
H USSR MAXIMUM PERMISSIBLE CONCENTRATION
I NEW YORK STATE AMBIENT WATER GUIDELINE
N/A NONE AVAILABLE
INTERPRETATION Of DATA
The interpretation of analytical results that are obtained frommeasurements near the limit of detection of the measurement processis subject to greater uncertainty than those at higherconcentrations. The principle areas of concern relate to whetherthe substance has actually been detected, whether it has beenproperly identified, and whether it is an artifact of themeasurement process. In other words, false positives can be causedby the instrumentation or the test procedures used, when in factthese compounds are not present in the sample.
There are several methods to treat data from such measurements:1. Exclude the low-level data because of this uncertainty factor.However, studies of long-term environmental trends and modellingmay be adversely affected by exclusion of such data.2. Qualify these data so the user is aware of the greateruncertainty associated with their use.
For the Drinking Water Surveillance Program, measurements near thelimit of detection of the measurement process are reportedqualified by the code M <T" . Results quantified by "W" indicate a
zero measurement. These results are reported for purposes ofmodelling and long-term trend analysis and no significance shouldbe attributed to a single determination of a substance below "T"(a single determination may well be a false positive) . Repeatanalysis or additional data are needed before it can be stated withcertainty that the substance in question was truly present. On theother hand, it is less likely that repeated detection of a
substance at or near the limit of detection at a specific locationis solely due to an artifact in the measurement system, and morelikely represents a true positive. However the average of such datais still only an estimate of the amount of substance presentsubject to the possible biases of the method used.
LABORATORY RESULTS. REMARK DESCRIPTIONS
No Sample Taken
BDL Below Minimum Measurable Amount
<T Greater Than Detection Limit But Not Confident(SEE INTERPRETATION OF RESULTS ABOVE)
> Results Are Greater Than The Upper Limit
<=> Approximate Result»
!AW No Data: Analysis Withdrawn
!CR No Data: Could Not Confirm By Reanalysis
!CS No Data: Contamination Suspected
!IL No Data: Sample Incorrectly Labelled
IIS No Data: Insufficient Sample
!LA No Data: Laboratory Accident
1LD No Data: Test Queued After Sample Discarded
1NA No Data: No Authorization To Perform Reanalysis
!NP No Data: No Procedure
1NR No Data: Sample Not Received
!0P No Data: Obscured Plate
1QU No Data: Quality Control Unacceptable
1PE No Data: Procedural Error - Sample Discarded
1PH No Data: Sample pH Outside Valid Range
IRE No Data: Received Empty
!R0 No Data: See Attached Report (no numeric results)
ISM No Data: Sample Missing
1SS No Data: Send Separate Sample Properly Preserved
1UI No Data: Indeterminant Interference
!TX No Data: Time Expired
A3C Approximate, Total Count Exceeded 300 Colonies
APL Additional Peak, Large, Not Priority Pollutant
APS Additional Peak, Less Than, Not Priority Pollutant
CIC Possible Contamination, Improper Cap
CRO Calculated Result Only
PPS Test Performed On Preserved Sample
RMP P and M-Xylene Not Separated
RRV Rerun Verification
RVU Reported Value Unusual
SPS Several Peaks, Small, Not Priority Pollutant
UAL Unreliable: Sample Age Exceeds Normal Limit
UCR Unreliable: Could Not Confirm By Reanalysis
UCS Unreliable: Contamination Suspected
UIN Unreliable: Indeterminant Interference
XP Positive After X Number of Hours
T# (T06) Result Taken After t Hours
TABLE 5
DRINKING WATER SURVEILLANCE PROGRAM OTTAWA USS (BRITANNIA) 1988
WATER TREATMENT PLANT DISTRIBUTION SYSTEM
TREATED SITE 1
STANDING
SITE 2
STANDING FREE FLOW
BACTERIOLOGICAL
FECAL COLIFORM MF (CT/100ML )
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
11
15
5
1
14
12
9
218
192 R72
52 T48
44
30 T48
DET'N LIMIT = GUIDELINE = (A1)
STANDRD PLATE CNT MF (CT/ML DET'N LIMIT = GUIDELINE " 500/ML (A1)
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
780
1400
1300
620
500
780
7000
2400 >
1
9
2
2
4
10
6 <=>
2 <=>
<=>
1 <=>
1
7
39
70 <=>
37 T24
73 T48
3 <=>
2
2
21
32
119
125
24
1100
13 T06
23 T06
2400 >
1 <=>
P/A BOTTLE ( DET'N LIMIT = GUIDELINE = (A1*)
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
TOTAL COLIFORM MF (CT/100ML ) DET'N LIMIT = GUIDELINE = 5/100MLCA1)
JAN
FEB
MAR
58
TABLE 5
DRINKING WATER SURVEILLANCE PROGRAM OTTAWA WSS (BRITANNIA) 1988
WATER TREATMENT PLANT DISTRIBUTION SYSTEM
SITE 1
STANDING
SITE 2
STANDING
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
68 A3C
TABLE 5
DRINKING WATER SURVEILLANCE PROGRAM OTTAWA WSS (BRITANNIA) 1988
WATER TREATMENT PLANT DISTRIBUTION SYSTEM
TREATED SITE 1
STANDING
SITE 2
STANDING
CHEMISTRY (FLD)
FLD CHLORINE (COMB) ( ) DET'N LIMIT = N/A GUIDELINE = N/A
JAN
FEB
MAR
APR
HAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
.200
.700
.200
.100
.700
.400
.500
.500
.400
.200
.200
.200
.050
.050
.100
.100
.050
.100
.200
.100
.150
.050
.050
.100
.100
.100
.100
.100
.050
.050
.100
.050
.050
.100
.100
.200
.100
.050
.050
.100
.150
.050
.100
.100
.050
.050
FLD CHLORINE FREE ( DET'N LIMIT - N/A GUIDELINE = N/A
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
1.300
.300
.900
.900
.500
1.300
1.100
1.100
1.300
1.500
1.500
1.100
.100
.050
.050
.050
.300
.450
.200
.100
.050
.100
.150
.150
.100
.100
.100
.050
.100
.100
.200
.100
.050
.050
.050
.100
.100
FLD CHLORINE (TOTAL) ( DET'N LIMIT = N/A GUIDELINE = N/A
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
1.500
1.000
1.100
1.000
1.200
1.700
1.600
1.600
1.700
1.700
1.700
1.300
.050
.100
.050
.050
.050
.100
.100
.100
.150
.100
.500
.550
.350
.150
.100
.100
.250
.250
.200
.200
.100
.100
.050
.100
.100
.050
.100
.050
.050
.100
.100
.200
.400
.200
.100
.050
.100
.150
.100
.150
.150
.150
.150
FLD PH (DMNSLESS ) DET'N LIMIT = N/A GUIDELINE = 6.5-8.5(A4)
TABLE 5
DRINKING WATER SURVEILLANCE PROGRAM OTTAWA WSS (BRITANNIA) 1988
WATER TREATMENT PLANT DISTRIBUTION SYSTEM
RAW
TABLE 5
DRINKING UATER SURVEILLANCE PROGRAM OTTAWA USS (BRITANNIA) 1988
WATER TREATMENT PLANT DISTRIBUTION SYSTEM
TABLE 5
DRINKING WATER SURVEILLANCE PROGRAM OTTAWA WSS (BRITANNIA) 1988
WATER TREATMENT PLANT DISTRIBUTION SYSTEM
TREATED SITE 1
STANDING
SITE 2
STANDING
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
33.500
32.500
32.500
17.500
32.000
27.500
24.500
25.000
29.500
36.000
39.000
34.500
2.500
3.500
3.500
2.000 <T
4.000
3.500
3.000
2.000 <T
3.000
4.000
3.000
3.000
4.000
5.000
9.000
2.000 <T
.500
3.000
3.500
3.000
3.000
5.000
2.500
4.000
4.000
TABLE 5
DRINKING WATER SURVEILLANCE PROGRAM OTTAWA USS (BRITANNIA) 1988
WATER TREATMENT PLANT DISTRIBUTION SYSTEM
TREATED SITE 1 SITE 2
STANDING FREE FLOW STANDING FREE FLOW
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
34.000
TABLE 5
DRINKING WATER SURVEILLANCE PROGRAM OTTAWA WSS (BRITANNIA) 1988
WATER TREATMENT PLANT DISTRIBUTION SYSTEM
TABLE 5
DRINKING WATER SURVEILLANCE PROGRAM OTTAWA WSS (BRITANNIA) 1988
WATER TREATMENT PLANT DISTRIBUTION SYSTEM
TREATED SITE 1
STANDING
SITE 2
STANDING
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
.023
.009
.006
.004 <T
.003 <T
.010
.010
.009
.016
.002 <T
.003 <T
.002 <T
.003 <T
.002 <T
.002 <T
.006
.002 <T
.002 <T
.009
.006
.002 <T
.005
.002 <T
.005
.005
.004 <T
.003 <T
IIS
TABLE 5
DRINKING WATER SURVEILLANCE PROGRAM OTTAWA WSS (BRITANNIA) 1988
WATER TREATMENT PLANT DISTRIBUTION SYSTEM
RAW
TABLE 5
DRINKING WATER SURVEILLANCE PROGRAM OTTAWA WSS (BRITANNIA) 1988
WATER TREATMENT PLANT DISTRIBUTION SYSTEM
SITE
RAW TREATED SITE 1 SITE 2
TYPE
STANDING FREE FLOW STANDING
10.580 30.610 27.830
TURBIDITY (FTU
TABLE 5
DRINKING WATER SURVEILLANCE PROGRAM OTTAWA WSS (BRITANNIA) 1988
WATER TREATMENT PLANT DISTRIBUTION SYSTEM
TREATED SITE 1 SITE 2
STANDING FREE FLOW STANDING FREE FLOW
SILVER (UG/L
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
DET'N LIMIT = .020 GUIDELINE = 50. (A1)
BDL
TABLE 5
DRINKING WATER SURVEILLANCE PROGRAM OTTAWA USS (BRITANNIA) 1988
WATER TREATMENT PLANT DISTRIBUTION SYSTEM
TABLE 5
DRINKING WATER SURVEILLANCE PROGRAM OTTAWA WSS (BRITANNIA) 1988
WATER TREATMENT PLANT DISTRIBUTION SYSTEM
TABLE 5
DRINKING WATER SURVEILLANCE PROGRAM OTTAWA WSS (BRITANNIA) 1988
WATER TREATMENT PLANT DISTRIBUTION SYSTEM
TABLE 5
DRINKING WATER SURVEILLANCE PROGRAM OTTAWA USS (BRITANNIA) 1988
WATER TREATMENT PLANT DISTRIBUTION SYSTEM
RAW
TABLE 5
DRINKING WATER SURVEILLANCE PROGRAM OTTAWA WSS (8RITANNIA) 1988
WATER TREATMENT PLANT DISTRIBUTION SYSTEM
TREATED SITE 1
STANDING
SITE 2
TABLE 5
DRINKING UATER SURVEILLANCE PROGRAM OTTAWA USS (BRITANNIA) 1988
WATER TREATMENT PLANT DISTRIBUTION SYSTEM
TABLE 5
DRINKING UATER SURVEILLANCE PROGRAM OTTAWA USS (BRITANNIA) 1988
WATER TREATMENT PLANT DISTRIBUTION SYSTEM
SITE 1
STANDING
SITE 2
STANDING
JUL
AUG
SEP
OCT
NOV
DEC
.050 <T
.050 <T
.110 <T
.080 <T
.110 <T
.080 <T
.040 <T
.030 <T
.040 <T
.040 <T
.040 <T
BDL
.040 <T
BDL
.060 <T
.030 <T
.050 <T
.050 <T
.030 <T
.050 <T
.050 <T
.030 <T
.030 <T
.040 <T
.030 <T
BDL
.040 <T
.060 <T
.040 <T
.050 <T
BDL
BDL
.050 <T
.040 <T
.040 <T
.170 <T
VANADIUM (UG/L DET'N LIMIT = .050 GUIDELINE = 100 (H)
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
.320 <T
.320 <T
.400
.570
.380 <T
.530
.430 <T
.600
.470 <T
.450 <T
.530
.440 <T
.650
.510
.560
.670
.990
1.000
1.000
1.100
1.100
.940
.990
.840
.820
.620
.740
.690
.960
1.100
1.000
1.100
1.100
.980
.990
1.000
.740
.540
.640
.570
.930
1.400
1.400
1.000
1.100
.920
.930
.880
.840
.650
.780
.680
.980
.930
1.200
1.200
1.000
1.100
.970
1.100
.690
.560
.610
.650
.960
.880
1.100
1.100
1.000
1.000
.850
1.000
ZINC (UG/L DET'N LIMIT GUIDELINE = 5000. (A3)
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
3.600
5.200
3.600
4.000
3.800
3.600
3.100
2.300
2.400
3.000
2.700
3.200
3.100
2.800
3.100
3.700
2.500
1.900
2.300
1.500
2.100
2.200
1.900
2.500
3.000
5.800
7.700
22.000
24.000
14.000
14.000
9.400
21.000
25.000
19.000
4.800
2.300
2.500
2.400
3.700
2.800
2.000
2.900
1.800
2.100
1.800
2.700
2.100
17.000
16.000
20.000
16.000
12.000
19.000
15.000
11.000
9.700
15.000
11.000
13.000
2.600
2.900
3.500
3.000
2.500
2.100
2.900
2.900
2.100
2.100
2.400
2.800
TABLE 5
DRINKING WATER SURVEILLANCE PROGRAM OTTAWA WSS (BRITANNIA) 1988
WATER TREATMENT PLANT DISTRIBUTION SYSTEM
SITE 1
STANDING
SITE 2
STANDING
CHLOROAROMATICS
HEXACHLOR06THANE (NG/L ) DET'N LIMIT = 1.000 GUIDELINE = 1900 (D4)
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
BDL
TABLE 5
DRINKING WATER SURVEILLANCE PROGRAM OTTAUA WSS (BRITANNIA) 1988
WATER TREATMENT PLANT DISTRIBUTION SYSTEM
SITE 1
STANDING
SITE 2
STANDING
CHLOROPHENOLS
246-TRICHLOROPHENOL (NG/L ) DET'N LIMIT = 50. GUIDELINE = 5000 (B1)
JUN
NOV
BDL
BDL
BDL
80.000 <T
TABLE 5
DRINKING WATER SURVEILLANCE PROGRAM OTTAUA WSS (BRITANNIA) 1988
WATER TREATMENT PLANT DISTRIBUTION SYSTEM
TREATED SITE 1
STANDING
SITE 2
STANDING
ALPHA BHC (NG/L
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
PESTICIDES & PCB
BDL
2.000 <T
2.000 <T
2.000 <T
BDL
1.000 <T
BDL
1.000 <T
BDL
BDL
!LA
!QU
TABLE 5
DRINKING WATER SURVEILLANCE PROGRAM OTTAUA USS (BRITANNIA) 1988
UATER TREATMENT PLANT DISTRIBUTION SYSTEM
TREATED SITE 1
STANDING
SITE 2
STANDING
TABLE 5
DRINKING WATER SURVEILLANCE PROGRAM OTTAWA WSS (BRITANNIA) 1988
WATER TREATMENT PLANT DISTRIBUTION SYSTEM
TREATED SITE 1
STANDING
SITE 2
STANDING
TABLE 5
DRINKING WATER SURVEILLANCE PROGRAM OTTAWA WSS (BRITANNIA) 1988
WATER TREATMENT PLANT DISTRIBUTION SYSTEM
TREATED SITE 1
STANDING
SITE 2
STANDING
AUG
SEP
OCT
NOV
DEC
BDL
BOL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
STYRENE (UG/L DET'N LIMIT GUIDELINE = 46.5 (D2)
SEP
OCT
NOV
DEC
BDL
.050 <T
.050 <T
.200 <T
.350 <T
.250 <T
.400 <T
.150 <T
.500 <T
.300 <T
.400 <T
.050 <T
.300 <T
.250 <T
.250 <T
.150 <T
CHLOROFORM (UG/L DET'N LIMIT = .100 GUIDELINE = 350 (A1+)
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
!TX
TABLE 5
DRINKING WATER SURVEILLANCE PROGRAM OTTAWA WSS (BRITANNIA) 1988
WATER TREATMENT PLANT DISTRIBUTION SYSTEM
TREATED SITE 1
STANDING
SITE 2
STANDING
AUG
SEP
OCT
NOV
DEC
BDL
BDL
BDL
BDL
BDL
.100 <T
BDL
.100 <T
BDL
BDL
BDL
BDL
.200 <T
BDL
BDL
BDL
BDL
.200 <T
BDL
BDL
T-CHLOROETHYLENE (UG/L DET'N LIMIT = .050 GUIDELINE = 10.0 <C2)
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
.050 <T
BDL
BDL
BDL
BDL
!NR
BDL
BDL
BDL
BDL
.100 <T
BDL
BDL
BDL
BDL
BDL
BDL
BDL
.050 <T
BDL
.050 <T
BDL
BDL
TOTL TRIHALOMETHANES (UG/L DET'N LIMIT = .500 GUIDELINE = 350 (A1)
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
!TX
SCAN/PARAMETER
BACTERIOLOGICAL
STANDARD PLATE COUNT MEMBRANE
FILTRATION
P/A BOTTLE
TOTAL COLIFORM MEMBRANE FILTRATION
TOTAL COLIFORM BACKGROUND MF
DETECTION
LIMIT GUIDELINE
CT/ML
CT/100ML
CT/100ML
500/ML(A1)
<A1*)
5/100mL(A1)
N/A
CHLOROAROMATICS
HEXACHLOROBUTADIENE1,2,3-TRICHLOROBENZENE
1 ,2,3,4-TETRACHLOROBENZENE
1,2,3,5-TETRACHLOROBENZENE
1,2,4-TRICHLOROBENZENE
1,2,4,5-TETRACHLOROBENZENE
1,3,5-TRICHLOROBENZENE
HEXACHLOROBENZENE
HEXACHLOROETHANE
OCTACHLOROSTYRENE
PENTACHL0R06ENZENE
2,3,6-TRICHLOROTOLUENE
2,4,5-TRICHLOROTOLUENE2,6,A-TRICHLOROTOLUENE
CHLOROPHENOLS
2,3,4-TRICHLOROPHENOL2,3,4,5-TETRACHLOROPHENOL
2,3,5,6-TETRACHLOROPHENOL
2,4,5-TRICHLOROPHENOL2,4,6-TRICHLOROPHENOLPENTACHLOROPHENOL
NG/L
SCAN/PARAMETER
BERYLLIUM
CADMIUMCOBALT
CHROMIUM
COPPER
IRON
MERCURY
MANGANESE
MOLYBDENUM
NICKEL
LEAD
SELENIUM
SILVER
STRONTIUM
THALLIUM
TITANIUM
URANIUM
VANADIUMZINC