Tap Water Results

Is Chino, 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 City of Chino.

3 public water systems serve parts of Chino. The largest, City of Chino, serves 90,187 people, and one system here had PFAS above a federal limit. Your water bill names your system.

Largest system

City of Chino

90,187 people · Purchased surface water · EPA ID CA3610012

Buys treated water from Water Facilities Authority – Jpa, Monte Vista Water District, Chino Basin Desalter Authority – Desalter 1.

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 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 City of Chino 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.

Chino homes and lead pipes

38%
of homes built before 1980 (California 56%, US 50%)
3%
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 Chino city (tables B25034, B25003). Estimates for small places have a margin of error.

Other water systems serving Chino

How nearby cities compare

CityMain water systemPFASLead (90th pct.)
Eastvale 4 mi
Elsinore Valley Municipal Water District
Elsinore Valley Municipal Water DistrictNone above limits1.3 ppb
Chino Hills 5 mi
City of Chino Hills
City of Chino HillsNone above limits0 ppb
Ontario 5 mi
Cucamonga Valley Water District
Cucamonga Valley Water DistrictNone above limits0 ppb
Montclair 7 mi
Monte Vista Water District
Monte Vista Water DistrictAbove limit0 ppb
Norco 7 mi
City of Norco
City of NorcoAbove limit0 ppb
Pomona 8 mi
City of Pomona Water Dept.
City of Pomona Water Dept.Above limit2.1 ppb
Chino ZIP codes (2)
  • 91708
  • 91710

Questions

Is Chino tap water safe to drink?

City of Chino 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 Chino, CA?

3 public water systems serve parts of Chino. The largest is City of Chino (90,187 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.

Does Chino tap water have PFAS?

None detected above EPA's reporting limits. City of Chino had no PFAS detected in EPA's 2023–2025 testing. "Not detected" means below the reporting limit (about 2 to 20 ppt), not proven zero.

Do Chino homes have lead pipes?

Census estimates put 38% of Chino 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. City of Chino'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.