Maori wording

Working with Concrete

Did you know that water that has come into contact with fresh cement or concrete dust is as toxic as bleach? If this water is allowed to run off a worksite, it could enter the stormwater network and end up in our streams and rivers where it will kill all fish, plants and insects that it comes into contact with. Dilution is not an option it would take 1 million litres of fresh water to dilute 1 litre of concrete wash water to a safe level.

Concreting and cutting is a trade, so its resulting waste is considered to be trade waste. It must be disposed of correctly. For more information see our brochure here

Top Tips
  1. Identify where wash water will flow and contain it:
    You can use any method that works well for you, as long as you're preventing any wash water from reaching a gutter, drain, river or stream.

  2. Pump the contained wash water into a portable tank for disposal at an approved waste management facility:
    A 1000 litre IBC or other large container will work well. You can then either arrange for the IBC to be taken away, or for a sucker truck to remove the contents of the container on site.

  3. Alternatively, hire a sucker truck to remove wash water from your bund as the site is being washed down.