Is Santa Paula, CA tap water safe?
The short answer
None of the 5 utilities serving Santa Paula has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and California’s records.
City of Santa Paula, which serves the most people here, has 2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 46 ppb, above EPA’s health benchmark. Health goals are stricter than legal limits and are not enforced.
The water from City of Santa Paula is very hard, typically 539 mg/L (31.5 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 Santa Paula’s ZIP codes, from EPA’s estimates.
- Open report
City of Santa Paula
California · serves 31,786 people · about 950 in Santa Paula
2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 46 ppb, above EPA’s health benchmark. Hardness: very hard, typically 539 mg/L (31.5 grains per gallon).
No health-based violations since 2016
- Open report
Middle Road Mutual Water Co
California · serves 134 people · under 100 in Santa Paula
Nothing in its records is above a health goal.
No health-based violations since 2016
- Open report
Sisar Mutual Water Co
California · serves 363 people · under 100 in Santa Paula
Nothing in its records is above a health goal. Hardness: very hard, typically 367 mg/L (21.5 grains per gallon).
No health-based violations since 2016
- Open report
Limoneira Ranch #1
California · serves 813 people · under 100 in Santa Paula
Nothing in its records is above a health goal.
No health-based violations since 2016
- Open report
South Mountain Mutual Water Co
California · serves 58 people · under 100 in Santa Paula
1 result above the health goal. The worst: Uranium at 3.8 ppb, above the health goal. Hardness: very hard, typically 623 mg/L (36.4 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 City of Santa Paula’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 Santa Paula
The 3 labs California certifies closest to Santa Paula, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Fruit Growers Laboratory, Inc.
Santa Paula, CA · about 5 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, radioactivity
Capco Analytical Services
Ventura, CA · about 13 miles
Certified for bacteria, nitrate, metals, minerals and other inorganics
Ventura County Public Health Laboratory
Oxnard, CA · about 13 miles
Certified for bacteria
ZIP codes in Santa Paula
Which ZIP codes are in Santa Paula: 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 Santa Paula
Other towns in Ventura County with a page of their own.
What to do next
- Read City of Santa Paula’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- About LithiumWhat it does to health, where it comes from, and the certification claim that addresses it.About Lithium
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water