Tap Water Results

Is Yorba Linda, CA tap water safe?

Data: U.S. EPA · How we read the data · How we check it

Summary

No federal limits exceeded in EPA data for Yorba Linda Water District. 2 PFAS were detected below the limits.

2 public water systems serve parts of Yorba Linda. The largest, Yorba Linda Water District, serves 84,292 people, and one system here had PFAS above a federal limit. Your water bill names your system.

Largest system

Yorba Linda Water District

84,292 people · Purchased surface water · EPA ID CA3010037

Buys treated water from City of Brea, City of Anaheim, Metropolitan Water District of SO. Cal..

PFASHighest averageLimitStatus
PFOA
Not detected
–4 pptNot detected
PFOS
Not detected
–4 pptNot detected
PFHxS
Not detected
–10 pptNot detected
PFNA
Not detected
–10 pptNot detected
HFPO-DA (GenX)
Not detected
–10 pptNot detected

ppt = parts per trillion. "Highest average" is the highest average at any of the system's entry points, the way EPA compares results with the limits.

Lead: 0 ppb at the 90th percentile (Dec 2024, and 9 in 10 homes sampled were at or below it) Below action level
Health-based violations since 2016: 0

Full Yorba Linda Water District results

Across California, 129 of 691 water systems EPA tested had PFAS above a 2024 federal limit, and 26 systems were above the lead action level in results from the last five years. California results.

Yorba Linda homes and lead pipes

39%
of homes built before 1980 (California 56%, US 50%)
1%
built before 1950 (California 14%)
17%
of households rent (California 44%)

Lead service lines and lead solder were allowed until 1986, so homes from before then are the ones to check. How to check your own line.

Housing: Census American Community Survey 2020–2024 5-year estimates for Yorba Linda city (tables B25034, B25003). Estimates for small places have a margin of error.

Other water systems serving Yorba Linda

How nearby cities compare

CityMain water systemPFASLead (90th pct.)
Anaheim 2 mi
City of Anaheim
City of AnaheimAbove limit0 ppb
Chino Hills 5 mi
City of Chino Hills
City of Chino HillsNone above limits0 ppb
Placentia 5 mi
Western Municipal Water District
Western Municipal Water DistrictNone above limits1.3 ppb
Brea 6 mi
Yorba Linda Water District
Yorba Linda Water DistrictNone above limits0 ppb
Diamond Bar 8 mi
Walnut Valley Water District
Walnut Valley Water DistrictNone above limits0 ppb
Orange 9 mi
City of Orange
City of OrangeAbove limit2.33 ppb
Yorba Linda ZIP codes (2)
  • 92886
  • 92887

Questions

Is Yorba Linda tap water safe to drink?

Yorba Linda Water District has had no health-based violations since 2016. Utility data can't show lead from your own pipes: if your home was built before 1986, test your tap. Your utility's annual Consumer Confidence Report is the official summary.

Who supplies water in Yorba Linda, CA?

2 public water systems serve parts of Yorba Linda. The largest is Yorba Linda Water District (84,292 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.

Does Yorba Linda tap water have PFAS?

Yorba Linda Water District had 2 PFAS detected at least once in EPA's 2023–2025 testing, all with averages below the federal limits.

Do Yorba Linda homes have lead pipes?

Census estimates put 39% of Yorba Linda homes as built before 1980 (California: 56%). Lead service lines and lead solder were allowed until 1986, so older homes are more likely to have them. Yorba Linda Water District's service line inventory says what your line is made of. The only way to know for your home is to check the line where it enters the house and test your tap.

Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.