Hardness

Wastewater parameter

Limit values

WHO Limit

Unknown.

EU Limit

Unknown.

US Limit

Unknown.

EWG Limit

Unknown.

Ratings

Distillation
Carbon filters
Membrane filters

References

  1. A Hanson and W Zachritz and K Stevens and L Mimbela and R Polka and L Cisneros,
    Distillate water quality of a single-basin solar still: laboratory and field studies, Solar Energy (2004)