Frequently asked questions
How do I know if my wash down bay is compliant with local authority regulations?
If you are unsure, call GPS Environmental on xxxx xxx xxx. Typical unroofed wash down bays require perimeter bunding, a holding pit, a diversion system and a pre-treatment device to treat wash down water and should not allow run-off to a storm water drain or adjacent area.
How do I best retain solids that accumulate in my wash down practices?
Silt traps and baffled pits are effective measures to retain solids for easy scheduled removal. Beach pits/drive in sumps are excellent for high solids wash down environments.
Do I need any equipment to treat wash down water?
An approved pre treatment device is required to treat wash down water in wash down bays. Simply allowing wash water to discharge into drains is strictly not permitted. Unroofed wash down bays over 20m2 may require a first flush diversion system to divert rainwater to stormwater.
I don’t have sewerage on site, can I still install a wash down bay?
In the absence of sewer, other approved discharge methods include leach drains, evaporative ponds or holding tanks. Regional areas who are on septic should contact the local shire or council for advice on where to discharge treated wash water.