Is Ladera Heights, CA tap water safe?
The short answer
1 of the 3 utilities serving Ladera Heights has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and California’s records: Los Angeles - City, Dept. of Water & Power.
Los Angeles - City, Dept. of Water & Power, which serves the most people here, has 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. Health goals are stricter than legal limits and are not enforced.
The water from Los Angeles - City, Dept. of Water & Power is moderately hard to very hard depending on the source, 94 to 544 mg/L (5.5 to 31.8 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 Ladera Heights’s ZIP codes, from EPA’s estimates.
- Open report
Los Angeles - City, Dept. of Water & Power
California · serves 3.9 million people · about 9,000 in Ladera Heights
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
Cal/Am Water Company - Baldwin Hills
California · serves 20,724 people · about 3,100 in Ladera Heights
4 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 27 ppb, above EPA’s health benchmark. Hardness: very hard, typically 269 mg/L (15.7 grains per gallon).
No health-based violations since 2016
- Open report
Gswc - Culver City
California · serves 38,233 people · about 2,600 in Ladera Heights
1 result above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 60 ppb, above EPA’s health benchmark. Hardness: hard, 170 mg/L (9.9 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 Los Angeles - City, Dept. of Water & Power’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: Nitrate, Arsenic, Lead
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: Nitrate, Arsenic, Lead
Culligan 10-Cup Pitcher with ZeroWater Technology (ZEROP10)
Pitcher
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 9, 2026
Certified for: Nitrate, Lead
Water testing near Ladera Heights
The 3 labs California certifies closest to Ladera Heights, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Positive Lab Service
Los Angeles, CA · about 8 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts
EMAX Laboratories, Inc.
Torrance, CA · about 13 miles
Certified for nitrate, minerals and other inorganics, organic chemicals, disinfection byproducts
JK BioScience Inc.
Rancho Dominguez, CA · about 13 miles
Certified for bacteria, lead and copper, metals
Which ZIP codes are in Ladera Heights: 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 Ladera Heights
Other towns in Los Angeles County with a page of their own.
What to do next
- Read Los Angeles - City, Dept. of Water & Power’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