West private wells

California private well water test guide

Learn which results matter, how to read your lab report, and when California homeowners should retest or call a well professional.

Common concerns in CA

Nitrate - High nitrate can be dangerous for infants and pregnant people.
Arsenic - Long-term arsenic exposure is linked to cancer and other chronic health risks.
Uranium - Uranium can affect kidneys and is regionally common in some bedrock wells.

Interpret nitrate lab results for a private well in California.

Interpret arsenic lab results for a private well in California.

Interpret lead lab results for a private well in California.

Interpret total coliform lab results for a private well in California.

Interpret e. coli lab results for a private well in California.

Interpret ph lab results for a private well in California.

Interpret hardness lab results for a private well in California.

Interpret iron lab results for a private well in California.

Interpret manganese lab results for a private well in California.

Interpret total dissolved solids lab results for a private well in California.

Interpret fluoride lab results for a private well in California.

Interpret sodium lab results for a private well in California.

Interpret sulfate lab results for a private well in California.

Interpret chloride lab results for a private well in California.

Interpret uranium lab results for a private well in California.

Interpret radon lab results for a private well in California.

Keep your well history

Save test history, set annual reminders, compare results over time, and create a shareable report for your family or water professional.