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| Assessment |
Domestic, storm water and industrial
effluents that are discharged into the coastal environment can have
significant impacts on the health of the inshore environment.
Discharges must be monitored to indicate the expansion of industrial
activities and domestic services and to ensure that the appropriate
controls are effected.
This indicator reports on the location,
nature and volume of effluent discharge (or point source discharges)
into coastal waters. Water quality variables are compared with DWAF general limits.
|
Domestic discharge
point |
Parameters for
which effluent exceeds the target value for coastal
waters
|
| Humansdorp STW |
pH |
| Fish Water Flats WTW |
pH, Ammonia, Copper,
Nickel, Zinc |
| Cape Receife STW |
pH, Ammonia |
| Drift Sands STW |
pH, Ammonia |
| Hood Point |
pH |
| East Bank WTW |
pH, Chromium, Copper,
Zinc |
| Gonubie STW |
pH, Conductivity, Ammonia,
Copper, Zinc | STW: Sewage Treatment
Works, WTW: Water Treatment Works
Discharges into the marine environment may
result in increased mortalities, eutrophication and excessive algal
growth, and changes in growth rates and reproduction in some species.
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