Is Middletown, CA tap water safe?
The short answer
2 of the 4 utilities serving Middletown have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and California’s records: Callayomi County Water District and Lazy S Mobile Ranch.
Callayomi 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 Callayomi County Water District is hard, typically 150 mg/L (8.8 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 Middletown’s ZIP codes, from EPA’s estimates.
- Open report
Callayomi County Water District
California · serves 1,607 people · under 100 in Middletown
Nothing in its records is above a health goal. Hardness: hard, typically 150 mg/L (8.8 grains per gallon).
1 health-based violation since 2016
- Open report
Anderson Springs CSD
California · serves 373 people · under 100 in Middletown
1 result above the health goal. The worst: Lead at 2.7 ppb, above the health goal. Hardness: soft, 29 mg/L (1.7 grains per gallon).
No health-based violations since 2016
- Open report
Lazy S Mobile Ranch
California · serves 73 people · under 100 in Middletown
1 result above the legal limit, 1 result above the limit’s level with no violation recorded and 1 result above the health goal. The worst: Haloacetic acids (HAA5) at 132 ppb, above the legal limit. Hardness: moderately hard, 103 mg/L (6 grains per gallon).
15 health-based violations since 2016
- Open report
Mountain of Attention Water
California · serves 26 people · under 100 in Middletown
Nothing in its records is above a health goal. Hardness: soft, 56 mg/L (3.3 grains per gallon).
No health-based violations since 2016
Water testing near Middletown
The 3 labs California certifies closest to Middletown, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Sonoma County Public Health Laboratory
Santa Rosa, CA · about 21 miles
Certified for bacteria
K Prime, LLC.
Santa Rosa, CA · about 22 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, PFAS
Brelje and Race Laboratories, Inc.
Santa Rosa, CA · about 24 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts
ZIP codes in Middletown
Which ZIP codes are in Middletown: 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 Middletown
Other towns in Lake County with a page of their own.
What to do next
- Read Callayomi 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