Is Vine Hill, CA tap water safe?
The short answer
Neither of the 2 utilities serving Vine Hill has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and California’s records.
Contra Costa Water District, which serves the most people here, has 2 results above the health goal. The worst: Arsenic at 2.5 ppb, above the health goal. Health goals are stricter than legal limits and are not enforced.
The water from Contra Costa Water District is soft to hard depending on the source, 52 to 132 mg/L (3 to 7.7 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 Vine Hill’s ZIP codes, from EPA’s estimates.
- Open report
Contra Costa Water District
California · serves 210,500 people · about 820 in Vine Hill
2 results above the health goal. The worst: Arsenic at 2.5 ppb, above the health goal. Hardness: soft to hard depending on the source, 52 to 132 mg/L (3 to 7.7 grains per gallon).
No health-based violations since 2016
- Open report
City of Martinez
California · serves 31,015 people · about 360 in Vine Hill
1 result above the health goal. The worst: Arsenic at 2.2 ppb, above the health goal. Hardness: moderately hard to hard depending on the source, 61 to 134 mg/L (3.5 to 7.8 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 Contra Costa 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 Vine Hill
The 3 labs California certifies closest to Vine Hill, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
McCampbell Analytical, Inc.
Pittsburg, CA · about 12 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, PFAS
Asbestos TEM Laboratories, Inc
Oakland, CA · about 13 miles
Certified for asbestos
Eurofins Built Environment Testing West, LLC
Emeryville, CA · about 13 miles
Certified for lead and copper
ZIP codes in Vine Hill
Which ZIP codes are in Vine Hill: 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 Vine Hill
Other towns in Contra Costa County with a page of their own.
What to do next
- Read Contra Costa 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