Tap Water Results

Is Corona, 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 Elsinore Valley Municipal Water District. 1 PFAS were detected below the limits.

4 public water systems serve parts of Corona. The largest, Elsinore Valley Municipal Water District, serves 169,455 people. Your water bill names your system.

Largest system

Elsinore Valley Municipal Water District

169,455 people · Surface water · EPA ID CA3310012

Buys treated water from Western Municipal Water District, Temescal Valley Water District, Eastern Municipal Water District.

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: 1.3 ppb at the 90th percentile (Dec 2025, and 9 in 10 homes sampled were at or below it) Below action level
Health-based violations since 2016: 0

Full Elsinore Valley Municipal 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.

Corona homes and lead pipes

25%
of homes built before 1980 (California 56%, US 50%)
4%
built before 1950 (California 14%)
36%
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. Renting? Ask your landlord what the service line is made of, because it's their pipe to replace. How to check your own line.

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

Which system serves your ZIP code

Based on the ZIP codes each system reported serving. Boundaries don't follow ZIP lines exactly, so your water bill is the final word.

SystemZIP codes in Corona
Elsinore Valley Municipal Water District
169,455 people
92879, 92881
City of Corona
169,380 people
92882

Other water systems serving Corona

How nearby cities compare

CityMain water systemPFASLead (90th pct.)
Norco 4 mi
City of Norco
City of NorcoAbove limit0 ppb
Eastvale 7 mi
Elsinore Valley Municipal Water District
Elsinore Valley Municipal Water DistrictNone above limits1.3 ppb
Chino 10 mi
City of Chino
City of ChinoNone above limits1 ppb
Chino Hills 11 mi
City of Chino Hills
City of Chino HillsNone above limits0 ppb
Anaheim 11 mi
City of Anaheim
City of AnaheimAbove limit0 ppb
Riverside 11 mi
City of Riverside
City of RiversideNone above limits1 ppb

Questions

Is Corona tap water safe to drink?

Elsinore Valley Municipal 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 Corona, CA?

4 public water systems serve parts of Corona. The largest is Elsinore Valley Municipal Water District (169,455 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.

Does Corona tap water have PFAS?

Elsinore Valley Municipal Water District had 1 PFAS detected at least once in EPA's 2023–2025 testing, all with averages below the federal limits.

Do Corona homes have lead pipes?

Census estimates put 25% of Corona 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. Elsinore Valley Municipal 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.