Is Temescal Valley, CA tap water safe?
The short answer
None of the 4 utilities serving Temescal Valley has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and California’s records.
Temescal Valley 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.
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 Temescal Valley’s ZIP codes, from EPA’s estimates.
- Open report
Temescal Valley Water District
California · serves 22,268 people · about 6,400 in Temescal Valley
Nothing in its records is above a health goal.
No health-based violations since 2016
- Open report
City of Corona
California · serves 169,380 people · about 2,800 in Temescal Valley
4 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 55.1 ppb, above EPA’s health benchmark. Hardness: hard on average, 146 mg/L (8.5 grains per gallon), ranging from 7.2 to 290 mg/L.
No health-based violations since 2016
- Open report
Elsinore Valley MWD
California · serves 169,455 people · about 2,400 in Temescal Valley
1 result above the limit’s level with no violation recorded, 3 results above the health goal and 1 result above EPA’s health benchmark. The worst: Arsenic at 11.6 ppb, above the limit’s level, no violation. Hardness: soft to very hard depending on the source, 11 to 580 mg/L (0.6 to 33.9 grains per gallon).
No health-based violations since 2016
- Open report
Western MWD
California · serves 87,955 people · under 100 in Temescal Valley
1 result above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 16 ppb, above EPA’s health benchmark.
No health-based violations since 2016
Water testing near Temescal Valley
The 3 labs California certifies closest to Temescal Valley, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Babcock Laboratories, Inc.
Riverside, CA · about 17 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, PFAS, radioactivity
Sierra Analytical Labs, Inc.
Laguna Hills, CA · about 17 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals
Clinical Laboratory of San Bernardino, Inc.
Grand Terrace, CA · about 21 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, radioactivity
ZIP codes in Temescal Valley
Which ZIP codes are in Temescal Valley: 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 Temescal Valley
Other towns in Riverside County with a page of their own.
What to do next
- Read Temescal Valley 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