WSUD and Current Innovations Tony Weber

Where is WSUD at?

What do we really need?

• Plan for the future, deal with the existing • More people will want to live here • Good planning controls are therefore essential • The problems we have are the here and now – our

fault! • We need to fix those as well.

• How to fix the bad while looking after the good

• Good economic measures (markets, incentives) to drive implementation

• Better leadership by local and state agencies • Recognition that this is part of doing business,

not something to put off for later!!

Where are the gaps?

A systems approach – water cycle management

Rainfall

540 GL/yr

TN 216 t/yr

TP 3.2 t/yr

Groundwater Discharge Loss

8.1 GL/yr

Evaporation

392 GL/yr

Rural Extractions

1.3 GL/yr

STP Discharges

3 GL/yr

TSS 5.9 t/yr

TN 4.7 t/yr

TP 0.6 t/yr

Recycled Water

0.73 GL/yr

Stormwater Discharges

145 GL/yr

TSS 8816 t/yr

TN 136 t/yr

TP 16.3 t/yr

Imported Potable Water 8 GL/yr

Exported Retic. Water 2.6 GL/yr

Leakage 1.7 GL/yr

= Inflows

= Outflows

Systems approach - outcomes

Recycled Water

Rainwater

Rural BMP (Horticulture)

Rural BMP (Grazing)

Waterway Revegetation

Greenfield WSUD

WSUD Retrofit

Systems approach - outcomes

TN

32%

66%

1%

0%

0%

1%

0%

The Science

*

The Science

Restore and

Protect

Addressing water quality issues

Retrofit existing areas

Source controls

Water quality

devices on new

and re-

development

Large Scale

Development Small Scale

Development

Neutral or

beneficial effect Load reduction

Targets

Stormwater

Strategy (MUSIC)

Deemed to

comply

Small Scale

Model

Biofilters,

Rainwater tanks