Tap Water Results

Is Carpentersville, 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 Carpentersville Water System.

Carpentersville Water System supplies Carpentersville (37,983 people).

Water system

Carpentersville Water System

37,983 people · Groundwater · EPA ID IL0890200

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: 1.1 ppb at the 90th percentile (Nov 2026, 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.

Carpentersville homes and lead pipes

54%
of homes built before 1980 (Illinois 64%, US 50%)
7%
built before 1950 (Illinois 26%)
28%
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 Carpentersville village (tables B25034, B25003). Estimates for small places have a margin of error.

How nearby cities compare

CityMain water systemPFASLead (90th pct.)
Algonquin 3 mi
Algonquin Water System
Algonquin Water SystemNone above limits1.96 ppb
Lake in the Hills 4 mi
Lake in the Hills Water System
Lake in the Hills Water SystemNone above limits2.7 ppb
Elgin 6 mi
Elgin Water System
Elgin Water SystemNone above limits18.5 ppb
Huntley 8 mi
Huntley Water System
Huntley Water SystemNone above limits1.1 ppb
Crystal Lake 8 mi
Crystal Lake Water System
Crystal Lake Water SystemNone above limits6.8 ppb
Hoffman Estates 8 mi
Hoffman Estates Water System
Hoffman Estates Water SystemNone above limits1.4 ppb
Carpentersville ZIP codes (1)
  • 60110

Questions

Is Carpentersville tap water safe to drink?

Carpentersville 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 Carpentersville, IL?

Carpentersville Water System, which serves 37,983 people.

Does Carpentersville tap water have PFAS?

None detected above EPA's reporting limits. Carpentersville 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 Carpentersville homes have lead pipes?

Census estimates put 54% of Carpentersville 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. Carpentersville 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.