Working with concrete
If in doubt – Stop and Shout! Take the time to plan and use the right system and ensure the wash water/waste is contained and/or removed correctly.
- Concrete waste water is toxic. If it reaches streams and waterways, it will kill fish and plant life. Dilution is not an option. It would take 1 million litres of water to dilute 1 litre of alkaline wastewater back to a PH of 6-7.
- Check the weather. When possible choose a dry day.
Read the brochure for more information:
Concrete Washwater (PDF: 2.5 MB)
Exposed aggregate driveways (PDF: 1.9 MB)
Useful links:
For general waste disposal enquiries go to the WasteMINZ website.
Contact your local council:
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