Is Clearlake Riviera, CA tap water safe?
The short answer
1 of the 5 utilities serving Clearlake Riviera has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and California’s records: MT. Konocti Mutual Water Company.
Kelseyville Co Waterworks District 3, which serves the most people here, has 1 result above the health goal. The worst: Lead at 5.2 ppb, above the health goal. Health goals are stricter than legal limits and are not enforced.
The water from Kelseyville Co Waterworks District 3 is moderately hard to hard depending on the source, 112 to 163 mg/L (6.5 to 9.5 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 Clearlake Riviera’s ZIP codes, from EPA’s estimates.
- Open report
Kelseyville Co Waterworks District 3
California · serves 4,102 people · about 200 in Clearlake Riviera
1 result above the health goal. The worst: Lead at 5.2 ppb, above the health goal. Hardness: moderately hard to hard depending on the source, 112 to 163 mg/L (6.5 to 9.5 grains per gallon).
No health-based violations since 2016
- Open report
MT. Konocti Mutual Water Company
California · serves 4,360 people · about 200 in Clearlake Riviera
1 result above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 26 ppb, above EPA’s health benchmark. Hardness: hard, typically 157 mg/L (9.2 grains per gallon).
3 health-based violations since 2016
- Open report
Lake County CSA 20 - Soda Bay
California · serves 2,003 people · under 100 in Clearlake Riviera
1 result above the health goal. The worst: Arsenic at 4.9 ppb, above the health goal. Hardness: hard, typically 141 mg/L (8.3 grains per gallon).
No health-based violations since 2016
- Open report
Buckingham Park Water District
California · serves 1,502 people · under 100 in Clearlake Riviera
1 result above the health goal. The worst: Arsenic at 8.7 ppb, above the health goal. Hardness: hard, typically 156 mg/L (9.1 grains per gallon).
No health-based violations since 2016
- Open report
Harbor View Mutual Water Company
California · serves 550 people · under 100 in Clearlake Riviera
2 results above the limit’s level with no violation recorded and 1 result above the health goal. The worst: Haloacetic acids (HAA5) at 64.2 ppb, above the limit’s level, no violation. Hardness: hard, 151 mg/L (8.8 grains per gallon).
No health-based violations since 2016
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in Kelseyville Co Waterworks District 3’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Brita Tahoe Pitcher with Elite Filter (OB60, OB06)
Pitcher
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 13, 2026
- IAPMO listing:NSF/ANSI 53checked Oct. 13, 2026
Certified for: Lead
Brita Everyday Pitcher with Elite Filter (OB46, OB06)
Pitcher
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 13, 2026
Certified for: Lead
PUR PLUS 11-Cup Pitcher (PPT111W)
Pitcher
- NSF listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
Certified for: Lead
Water testing near Clearlake Riviera
The 3 labs California certifies closest to Clearlake Riviera, 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 27 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 29 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, PFAS
Sonoma County Public Health Laboratory
Santa Rosa, CA · about 32 miles
Certified for bacteria
ZIP codes in Clearlake Riviera
Which ZIP codes are in Clearlake Riviera: 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 Clearlake Riviera
Other towns in Lake County with a page of their own.
What to do next
- Read Kelseyville Co Waterworks District 3’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Filters for LeadRanked by certification and what they cost over five years.The best water filters for lead, ranked
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water