Is Fair Oaks, CA tap water safe?
The short answer
None of the 6 utilities serving Fair Oaks has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and California’s records.
Fair Oaks Water District, which serves the most people here, has 2 results above the health goal. The worst: Arsenic at 1.2 ppb, above the health goal. Health goals are stricter than legal limits and are not enforced.
The water from Fair Oaks Water District is soft to moderately hard depending on the source, 53 to 120 mg/L (3.1 to 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 Fair Oaks’s ZIP codes, from EPA’s estimates.
- Open report
Fair Oaks Water District
California · serves 36,226 people · about 28,300 in Fair Oaks
2 results above the health goal. The worst: Arsenic at 1.2 ppb, above the health goal. Hardness: soft to moderately hard depending on the source, 53 to 120 mg/L (3.1 to 7 grains per gallon).
No health-based violations since 2016
- Open report
Citrus Heights Water District
California · serves 67,818 people · about 4,500 in Fair Oaks
2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 18 ppb, above EPA’s health benchmark. Hardness: moderately hard to hard depending on the source, 99 to 165 mg/L (5.8 to 9.6 grains per gallon).
No health-based violations since 2016
- Open report
Carmichael Water District
California · serves 41,193 people · about 1,900 in Fair Oaks
2 results above the health goal. The worst: Uranium at 6.7 ppb, above the health goal. Hardness: soft to very hard depending on the source, 24 to 220 mg/L (1.4 to 12.9 grains per gallon).
No health-based violations since 2016
- Open report
Cal Am - Lincoln Oaks
California · serves 48,105 people · about 1,000 in Fair Oaks
3 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 86.6 ppb, above EPA’s health benchmark. Hardness: soft to very hard depending on the source, 25 to 250 mg/L (1.5 to 14.6 grains per gallon).
No health-based violations since 2016
- Open report
Orange Vale Water Company
California · serves 16,861 people · about 270 in Fair Oaks
1 result above the health goal. The worst: Arsenic at 7.1 ppb, above the health goal. Hardness: soft to moderately hard depending on the source, 23 to 110 mg/L (1.3 to 6.4 grains per gallon).
No health-based violations since 2016
- Open report
Sacramento Suburban Water District
California · serves 194,444 people · about 220 in Fair Oaks
2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 60 ppb, above EPA’s health benchmark. Hardness: soft to very hard depending on the source, 54 to 370 mg/L (3.2 to 21.6 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 Fair Oaks Water District’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 Fair Oaks
The 3 labs California certifies closest to Fair Oaks, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
BSK Associates - Sacramento Analytical Laboratory
Sacramento, CA · about 4 miles
Certified for bacteria, nitrate, minerals and other inorganics
California Laboratory Services
Rancho Cordova, CA · about 5 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts
Sparger Technology, Inc.
Sacramento, CA · about 8 miles
Certified for bacteria, nitrate, minerals and other inorganics
ZIP codes in Fair Oaks
Which ZIP codes are in Fair Oaks: 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 Fair Oaks
Other towns in Sacramento County with a page of their own.
What to do next
- Read Fair Oaks Water District’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Filters for ArsenicRanked by certification and what they cost over five years.The best reverse osmosis systems, ranked
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water