Grey Water Footprint Calculator

Calculate the grey water footprint - the freshwater volume needed to assimilate pollutant loads based on water quality standards.

Pollutant Parameters

Pollutant Type

Pollutant Load (kg/year)

Natural Background Concentration (mg/L)

Maximum Allowable Concentration (mg/L)

Effluent Data (Optional)

Effluent Concentration (mg/L)

Effluent Volume (L/day)

Grey Water Footprint

10,000 m3/year

Based on pollutant load method

From Effluent Data

18,250 m3

Annual Load

182.50 kg

Dilution Factor

5.0x

Concentration Range

10.00 mg/L

Formula

Grey Water Footprint = L / (Cmax - Cnat)

Where:

L = Pollutant load (mass/time)
Cmax = Maximum allowable concentration
Cnat = Natural background concentration

About Grey Water

Grey water footprint indicates the pollution impact of human activities. It represents the volume of freshwater required to dilute pollutants to meet water quality standards. Reducing grey water footprint requires pollution prevention and improved treatment.