Is Rancho Cordova, CA tap water safe?
The short answer
2 of the 5 utilities serving Rancho Cordova have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and California’s records: SCWA - Laguna/Vineyard and SCWA Mather - Sunrise.
Golden State Water Co. - Cordova, which serves the most people here, has 2 results above the health goal. The worst: Uranium at 9.8 ppb, above the health goal. Health goals are stricter than legal limits and are not enforced.
The water from Golden State Water Co. - Cordova is soft to very hard depending on the source, 31 to 245 mg/L (1.8 to 14.3 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 Rancho Cordova’s ZIP codes, from EPA’s estimates.
- Open report
Golden State Water Co. - Cordova
California · serves 47,366 people · about 36,300 in Rancho Cordova
2 results above the health goal. The worst: Uranium at 9.8 ppb, above the health goal. Hardness: soft to very hard depending on the source, 31 to 245 mg/L (1.8 to 14.3 grains per gallon).
No health-based violations since 2016
- Open report
Cal Am - Suburban Rosemont
California · serves 54,893 people · about 15,000 in Rancho Cordova
2 results above EPA’s new limit, which takes effect in 2029 and 2 results above the health goal. The worst: PFOS at 13.4 ppt, above EPA’s new limit, which takes effect in 2029. Hardness: soft to very hard depending on the source, 50 to 360 mg/L (2.9 to 21.1 grains per gallon).
No health-based violations since 2016
- Open report
SCWA - Laguna/Vineyard
California · serves 188,417 people · about 3,300 in Rancho Cordova
2 results above EPA’s new limit, which takes effect in 2029 and 2 results above the health goal. The worst: PFOS at 24 ppt, above EPA’s new limit, which takes effect in 2029. Hardness: soft to very hard depending on the source, 9.1 to 385 mg/L (0.5 to 22.5 grains per gallon).
1 health-based violation since 2016
- Open report
SCWA Mather - Sunrise
California · serves 32,812 people · about 3,300 in Rancho Cordova
1 result above the health goal. The worst: Arsenic at 1.3 ppb, above the health goal. Hardness: soft, typically 53 mg/L (3.1 grains per gallon).
1 health-based violation since 2016
- Open report
Hometown Colonial Estates LLC
California · serves 400 people · under 100 in Rancho Cordova
1 result above the health goal. The worst: Arsenic at 1.1 ppb, above the health goal. Hardness: soft to moderately hard depending on the source, 34 to 116 mg/L (2 to 6.8 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 Golden State Water Co. - Cordova’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Countertop reverse osmosis
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 4, 2026
Certified for: Arsenic
Aquasana SmartFlow Reverse Osmosis (AQ-SFRO2)
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Arsenic
Brondell Capella RC250 Reverse Osmosis System
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Arsenic
Water testing near Rancho Cordova
The 3 labs California certifies closest to Rancho Cordova, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
California Laboratory Services
Rancho Cordova, CA · about 1 mile
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts
BSK Associates - Sacramento Analytical Laboratory
Sacramento, CA · about 1 mile
Certified for bacteria, nitrate, minerals and other inorganics
Sparger Technology, Inc.
Sacramento, CA · about 3 miles
Certified for bacteria, nitrate, minerals and other inorganics
Which ZIP codes are in Rancho Cordova: 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 Rancho Cordova
Other towns in Sacramento County with a page of their own.
What to do next
- Read Golden State Water Co. - Cordova’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- About UraniumWhat it does to health, where it comes from, and the certification claim that addresses it.About Uranium
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water