Is Upper Lake, CA tap water safe?
The short answer
1 of the 3 utilities serving Upper Lake has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and California’s records: Blue Lakes Improvement Club.
Upper Lake County Water District, which serves the most people here, has nothing above a health goal in EPA’s and California’s records. That data covers what its report lists, not everything.
The water from Upper Lake County Water District is moderately hard, typically 108 mg/L (6.3 grains per gallon). How California’s water compares.
A town can be served by more than one utility, and some homes are on private wells. The name on your water bill tells you which is yours, and your ZIP code narrows it down. They are listed by how many people each serves in Upper Lake’s ZIP codes, from EPA’s estimates.
- Open report
Upper Lake County Water District
California · serves 989 people · under 100 in Upper Lake
Nothing in its records is above a health goal. Hardness: moderately hard, typically 108 mg/L (6.3 grains per gallon).
No health-based violations since 2016
- Open report
Villa Blue Estates Water District
California · serves 60 people · under 100 in Upper Lake
1 result above the health goal. The worst: Lead at 10 ppb, above the health goal. Hardness: hard, 155 mg/L (9.1 grains per gallon).
No health-based violations since 2016
- Open report
Blue Lakes Improvement Club
California · serves 90 people · based in Upper Lake
Nothing in its records is above a health goal. Hardness: hard, 148 mg/L (8.6 grains per gallon).
1 health-based violation since 2016
Water testing near Upper Lake
The 3 labs California certifies closest to Upper Lake, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Alpha Analytical Laboratories, Inc. - Ukiah
Ukiah, CA · about 16 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, radioactivity
K Prime, LLC.
Santa Rosa, CA · about 50 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, PFAS
Sonoma County Public Health Laboratory
Santa Rosa, CA · about 54 miles
Certified for bacteria
ZIP codes in Upper Lake
Which ZIP codes are in Upper Lake: Census 2020 relationship files. Which utilities serve them, and how many people: EPA SDWIS and EPA’s service area map. Each utility’s results: EPA UCMR 5, EPA SDWIS, and EPA’s and the state’s compliance monitoring, as its report lists them. How they are measured: methodology. Certified labs: California State Water Resources Control Board, ELAP accredited laboratories and their fields of accreditation; distances from the Census 2020 ZIP code tabulation area gazetteer.
Near Upper Lake
Other towns in Lake County with a page of their own.
What to do next
- Read Upper Lake County Water District’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Decide if you want a filter at allA filter for taste or chlorine is a preference, not a need. The standards say what each kind can do.NSF/ANSI standards, decoded
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water