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Well Water Treatment for Non-Bacterial Contamination

This guide presents options available to treat a water well for non-bacterial contaminants. Treatment devices are generally of three types:

  • Point of use, (faucets)
  • Point of entry, (on main water line entering the house)
  • Well head (at the well)

Some contaminants can be adequately treated at indoor taps. Other contaminants, however, may volatilize and harmful vapors might be released, such as when using showers or washing machines. These contaminants are impractical for point-of-use filters. They would be better treated at the point of entry or the wellhead. Wellhead treatment technologies are currently unproven, experimental, or impractical.

Sonoma County Environmental Health & Safety recommends that you talk with a water treatment professional about your specific situation to assure that the system you are considering will work for your needs.

To ensure that any treatment device considered is certified as to its effectiveness by the State of California visit the State Water Resources Control Board website:

List of Registered Residential Water Treatment Devices

ContaminantActivated Alumina FiltersActivated Carbon FiltersMechanical FiltrationOxidizing FiltersOzonationReverse Osmosis
Arsenicxx
Asbestosxx
Benzenexx
Chlorinex
Colorxxx
Flouridexx
Hardness
Hydrogen Sulfidexx
lnorganics, minerals (some)x
Iron/Manganese- dissolvedx
Iron/Manganese- insolublexx
Leadx
Mercuryxx
MTBEx
Nitratex
Odor and tastexxxx
Pesticides (some)xxx
Saltx
Sand, silt, clay (turbidity)x
Uraniumx
Volatile organic compoundsxx