Is Cold Springs, CA tap water safe?
The short answer
Neither of the 2 utilities serving Cold Springs has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and California’s records.
El Dorado ID - Main, 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 El Dorado ID - Main is soft, typically 12 mg/L (0.7 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 Cold Springs’s ZIP codes, from EPA’s estimates.
- Open report
El Dorado ID - Main
California · serves 128,408 people · about 180 in Cold Springs
Nothing in its records is above a health goal. Hardness: soft, typically 12 mg/L (0.7 grains per gallon).
No health-based violations since 2016
- Open report
Cold Springs Water Co
California · serves 1,771 people · under 100 in Cold Springs
1 result above the health goal. The worst: Lead at 2.8 ppb, above the health goal. Hardness: soft to moderately hard depending on the source, 46 to 98 mg/L (2.7 to 5.7 grains per gallon).
No health-based violations since 2016
Water testing near Cold Springs
The 3 labs California certifies closest to Cold Springs, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
49er Water Laboratory
Jackson, CA · about 19 miles
Certified for bacteria, nitrate, minerals and other inorganics
Precision Enviro-Tech
Twain Harte, CA · about 29 miles
Certified for bacteria
Ceres Analytical Laboratory, Inc.
El Dorado Hills, CA · about 37 miles
Certified for organic chemicals
Which ZIP codes are in Cold Springs: 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 Cold Springs
Other towns in Tuolumne County with a page of their own.
What to do next
- Read El Dorado ID - Main’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