Group 1

Groundwater analysis

Irrigation wells mapped out

1

2

3

4

5

Parameters examined

Chemical content : pH, hardness, nitrate, sulphate, calcium

Biological content: coliform

Results

PH NO3(mg/l) SO4(mg/l)

Hardness (mg/l

) Ca (mg/l) Coliform

Pozzo 1 7,6 40 230 630 196 0

Pozzo 2 7,3 160 180 540 180,0 0

Pozzo 3 6,9 9,2 48 600 180,0 0

Pozzo 4 7,2 85 115 400 150,0 0

Pozzo 5 7,0 120 270 630 206,0 0

The results reveal that readings are not homogeneous since samples have been taken at different times and under different weather conditions, which have surely influenced the parameters themselves

Analysis of the results

Well no.3 (the nearest to the town)_ has all the parameters examined which do not diverge from those provided for by laws in force

Wells no.1-2-4-5 _ have a high concentration of nitrate.

This high level is maybe due to the use of fertilizers containing nitrate

Well no.5 _ has a sulphate concentration exceeding 250 mg/l (the highest reading provided by law)

Neither coliform nor micro-organisms have been found through microscopic tests; hence, we can assert that there is no biological pollution

However, the conclusions we have drawn cannot be considered as definitive as they the result of the analyses carried out within a limited period of time