Is Bonita, CA tap water safe?
The short answer
None of the 3 utilities serving Bonita has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and California’s records.
Sweetwater Authority, which serves the most people here, has 2 results above EPA’s new limit, which takes effect in 2029 and 2 results above the health goal. The worst: PFOA at 11.4 ppt, above EPA’s new limit, which takes effect in 2029.
The water from Sweetwater Authority is very hard on average, 193 mg/L (11.3 grains per gallon), ranging from 76 to 340 mg/L. 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 Bonita’s ZIP codes, from EPA’s estimates.
- Open report
Sweetwater Authority
California · serves 184,915 people · about 8,500 in Bonita
2 results above EPA’s new limit, which takes effect in 2029 and 2 results above the health goal. The worst: PFOA at 11.4 ppt, above EPA’s new limit, which takes effect in 2029. Hardness: very hard on average, 193 mg/L (11.3 grains per gallon), ranging from 76 to 340 mg/L.
No health-based violations since 2016
- Open report
Otay Water District
California · serves 242,155 people · about 1,200 in Bonita
1 result above EPA’s health benchmark. The worst: Lithium at 28.9 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
Viejas Community System
California · serves 9,600 people · about 230 in Bonita
3 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 21.4 ppb, above EPA’s health benchmark.
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 Sweetwater Authority’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: PFOA, PFOS, 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: PFOA, PFOS, 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: PFOA, PFOS, Arsenic
Water testing near Bonita
The 3 labs California certifies closest to Bonita, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Metropolitan Solutions
National City, CA · about 4 miles
Certified for bacteria
Environmental Laboratory Network, Inc.
San Diego, CA · about 9 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, radioactivity
San Diego County Public Health Laboratory
San Diego, CA · about 12 miles
Certified for bacteria
Which ZIP codes are in Bonita: 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 Bonita
Other towns in San Diego County with a page of their own.
What to do next
- Read Sweetwater Authority’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Filters for PFOARanked by certification and what they cost over five years.The best water filters for PFAS, ranked
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water