Is Lomita, CA tap water safe?
The short answer
2 of the 3 utilities serving Lomita have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and California’s records: Lomita - City, Water Dept. and Los Angeles - City, Dept. of Water & Power.
Lomita - City, Water Dept., which serves the most people here, has 1 result above EPA’s new limit, which takes effect in 2029 and 1 result above EPA’s health benchmark. The worst: PFOS at 4.3 ppt, above EPA’s new limit, which takes effect in 2029.
The water from Lomita - City, Water Dept. is very hard, 340 mg/L (19.9 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 Lomita’s ZIP codes, from EPA’s estimates.
- Open report
Lomita - City, Water Dept.
California · serves 20,256 people · nearly all in Lomita
1 result above EPA’s new limit, which takes effect in 2029 and 1 result above EPA’s health benchmark. The worst: PFOS at 4.3 ppt, above EPA’s new limit, which takes effect in 2029. Hardness: very hard, 340 mg/L (19.9 grains per gallon).
1 health-based violation since 2016
- Open report
Los Angeles - City, Dept. of Water & Power
California · serves 3.9 million people · about 1,200 in Lomita
4 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 100 ppb, above EPA’s health benchmark. Hardness: moderately hard to very hard depending on the source, 94 to 544 mg/L (5.5 to 31.8 grains per gallon).
2 health-based violations since 2016
- Open report
California Water Service Co. - Palos Ver
California · serves 70,830 people · about 1,100 in Lomita
1 result above EPA’s health benchmark. The worst: Lithium at 66.3 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 Lomita - City, Water Dept.’s water, which serves the most people here. Another utility’s report names what handles its own results.
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ZeroWater 10 Cup Pitcher (ZP-010)
Pitcher
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53checked Oct. 4, 2026
Certified for: PFOS
Aquasana Claryum Direct Connect (AQ-MF-1)
Under-sink carbon
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 16, 2026
Certified for: PFOS
Express Water StreamLine Direct Connect System (USC001)
Under-sink carbon
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 16, 2026
Certified for: PFOS
Water testing near Lomita
The 3 labs California certifies closest to Lomita, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
EMAX Laboratories, Inc.
Torrance, CA · about 2 miles
Certified for nitrate, minerals and other inorganics, organic chemicals, disinfection byproducts
Applied Microbiological Services (AMS)
Long Beach, CA · about 6 miles
Certified for bacteria
JK BioScience Inc.
Rancho Dominguez, CA · about 6 miles
Certified for bacteria, lead and copper, metals
ZIP codes in Lomita
Which ZIP codes are in Lomita: 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 Lomita
Other towns in Los Angeles County with a page of their own.
What to do next
- Read Lomita - City, Water Dept.’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Filters for PFOSRanked 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