Is Newcastle, CA tap water safe?
The short answer
Neither of the 2 utilities serving Newcastle has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and California’s records.
Placer CWA - Auburn/Bowman, 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 Placer CWA - Auburn/Bowman is soft, typically 14 mg/L (0.8 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 Newcastle’s ZIP codes, from EPA’s estimates.
- Open report
Placer CWA - Auburn/Bowman
California · serves 27,317 people · about 210 in Newcastle
Nothing in its records is above a health goal. Hardness: soft, typically 14 mg/L (0.8 grains per gallon).
No health-based violations since 2016
- Open report
Placer CWA - Foothill
California · serves 93,417 people · about 170 in Newcastle
1 result above the health goal. The worst: Arsenic at 1.3 ppb, above the health goal. Hardness: soft to moderately hard depending on the source, 13 to 93 mg/L (0.8 to 5.4 grains per gallon).
No health-based violations since 2016
Water testing near Newcastle
The 3 labs California certifies closest to Newcastle, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Onterris Laboratories, LLC
El Dorado Hills, CA · about 17 miles
Certified for organic chemicals, PFAS
Ceres Analytical Laboratory, Inc.
El Dorado Hills, CA · about 18 miles
Certified for organic chemicals
BSK Associates - Sacramento Analytical Laboratory
Sacramento, CA · about 21 miles
Certified for bacteria, nitrate, minerals and other inorganics
ZIP codes in Newcastle
Which ZIP codes are in Newcastle: 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 Newcastle
Other towns in Placer County with a page of their own.
What to do next
- Read Placer CWA - Auburn/Bowman’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