Water & waste water
Ground water and surface water
You can fill in groundwater and surface water for the purpose of the number of water use. The completed data does not affect the calculated environmental impact.
The amount of waste water pollution is calculated in pollution units (PU’s), you can find this on the bill.
In case the PU is not know: enter in the waste water box the same number (in m3) as drinking water, and change the unit to ‘m3 domestic’ instead of ‘PU’.
At swimming pools
The waste water of swimming pools is less dirty than domestic waste water. Use the following formula:
waste water in PU = pollution units = (drinking water in m3 – suppletion water in m3) x 0,0039 + suppletion water in m3 x 0,001