Is Woodbridge, CA tap water safe?
The short answer
1 of the 4 utilities serving Woodbridge has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and California’s records: Mokelumne Mobile Senior Park.
Fairway Estates PWS CSA - 18, which serves the most people here, has 1 result above the health goal. The worst: Arsenic at 8.0 ppb, above the health goal. Health goals are stricter than legal limits and are not enforced.
The water from Fairway Estates PWS CSA - 18 is soft to moderately hard depending on the source, 36 to 65 mg/L (2.1 to 3.8 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 Woodbridge’s ZIP codes, from EPA’s estimates.
- Open report
Fairway Estates PWS CSA - 18
California · serves 149 people · nearly all in Woodbridge
1 result above the health goal. The worst: Arsenic at 8.0 ppb, above the health goal. Hardness: soft to moderately hard depending on the source, 36 to 65 mg/L (2.1 to 3.8 grains per gallon).
No health-based violations since 2016
- Open report
Country Club Vista Mutual Water Co
California · serves 75 people · nearly all in Woodbridge
1 result above the health goal. The worst: Arsenic at 7.0 ppb, above the health goal. Hardness: moderately hard, 64 mg/L (3.7 grains per gallon).
No health-based violations since 2016
- Open report
Lodi Lake Mobile Home Park
California · serves 104 people · under 100 in Woodbridge
2 results above the health goal. The worst: Arsenic at 5.0 ppb, above the health goal. Hardness: soft, 36 mg/L (2.1 grains per gallon).
No health-based violations since 2016
- Open report
Mokelumne Mobile Senior Park
California · serves 55 people · under 100 in Woodbridge
1 result above the health goal. The worst: Arsenic at 3.7 ppb, above the health goal. Hardness: soft, 41 mg/L (2.4 grains per gallon).
1 health-based violation since 2016
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in Fairway Estates PWS CSA - 18’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 Woodbridge
The 3 labs California certifies closest to Woodbridge, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Lodi Wine Laboratories
Lodi, CA · about 4 miles
Certified for nitrate, minerals and other inorganics
Precision Enviro-Tech
Stockton, CA · about 13 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics
Alpha Analytical Laboratories, Inc.
Elk Grove, CA · about 15 miles
Certified for bacteria, nitrate, minerals and other inorganics
ZIP codes in Woodbridge
Which ZIP codes are in Woodbridge: 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 Woodbridge
Other towns in San Joaquin County with a page of their own.
What to do next
- Read Fairway Estates PWS CSA - 18’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