Contaminated groundwater

We'll consider an application to discharge groundwater during a site remediation if you:

  • provide evidence the groundwater has previously been contaminated by man-made sources
  • install a pre-treatment system to treat the trade wastewater to meet our acceptance standards
  • pump the wastewater to sewer
  • install an approved flow measurement device
  • install an approved rainfall cut-off device to delay discharge during and immediately after heavy rain
  • provide a plan outlining how long you expect the remediation work to take.
Excavation and construction
If you collect groundwater and surface water during excavation and construction, you can't discharge it to our wastewater system.

You must treat and discharge it to the site's stormwater drainage system.

Talk to the NSW Environment Protection Authority or your local council about their requirements.