Tap Water Results

Is Yorkville, IL 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 Yorkville Water System.

Yorkville Water System supplies Yorkville (23,000 people).

Water system

Yorkville Water System

23,000 people · Groundwater · EPA ID IL0930250

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: 1.45 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

Across Illinois, 13 of 479 water systems EPA tested had PFAS above a 2024 federal limit, and 18 systems were above the lead action level in results from the last five years. Illinois results.

Yorkville homes and lead pipes

14%
of homes built before 1980 (Illinois 64%, US 50%)
1%
built before 1950 (Illinois 26%)
20%
of households rent (Illinois 33%)

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 Yorkville city (tables B25034, B25003). Estimates for small places have a margin of error.

How nearby cities compare

CityMain water systemPFASLead (90th pct.)
Oswego 5 mi
Oswego Water System
Oswego Water SystemNone above limits0 ppb
Plainfield 10 mi
Plainfield Water System
Plainfield Water SystemNone above limits0 ppb
Aurora 10 mi
Aurora Water System
Aurora Water SystemNone above limits25.7 ppb
Batavia 14 mi
Batavia Water System
Batavia Water SystemNone above limits3.82 ppb
Naperville 15 mi
Naperville Water System
Naperville Water SystemNone above limits6.1 ppb
Bolingbrook 17 mi
Illinois American Water – West Suburban
Illinois American Water – West SuburbanNone above limits0 ppb
Yorkville ZIP codes (2)
  • 60512
  • 60560

Questions

Is Yorkville tap water safe to drink?

Yorkville Water System 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 Yorkville, IL?

Yorkville Water System, which serves 23,000 people.

Does Yorkville tap water have PFAS?

None detected above EPA's reporting limits. Yorkville Water System 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 Yorkville homes have lead pipes?

Census estimates put 14% of Yorkville homes as built before 1980 (Illinois: 64%). Lead service lines and lead solder were allowed until 1986, so older homes are more likely to have them. Yorkville Water System'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.