Coliforms/100 ml of water

Interpretation

Recommandations

0 to 10

Reasonable quality

Acceptable

10 to 100

Polluted water

Such water sources require better protection through simple treatment of water

100 to 1000

Very polluted water

Water from such sources may be treated, but it is recommended to seek for alternative sources

>1000

Excessively polluted water

Water sources that should be avoided