Public Water Systems

The US Safe Drinking Water Act and derivative legislation define “public water system” as an entity that provides “water for human consumption through pipes or other constructed conveyances to at least 15 service connections or serves an average of at least 25 people for at least 60 days a year.”

Neilson Research Corporation is the largest fully accredited drinking water laboratory in Oregon.  We are accredited by Oregon Environmental Laboratory Accreditation Program (ORELAP) and have continuously maintained EPA or State accreditation since 1981.

We are committed to providing our clients with sound analytical data, unparalleled customer service and offering a full range of environmental capabilities.

Click on the links below for more information.

Analytical Services for Drinking Water

Inorganic (primary, secondary)
EPA distilled Water Metals TDS, Coliform, detergents, alkalinity, hardness
Organic (VOCs, SOCs) Carbamate Pesticides Chlorinated Organic Acids
Diquat Endothall Glysophate Chlorinated Pesticides
Total Coliforms