Tap Water Results

Is Mundelein, 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 Mundelein Water System.

2 public water systems serve parts of Mundelein. The largest, Mundelein Water System, serves 31,500 people. Your water bill names your system.

Largest system

Mundelein Water System

31,500 people · Purchased surface water · EPA ID IL0971150

Buys treated water from Central Lake County Jawa, Vernon Hills – Lake County Public Works.

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: 4.3 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.

Mundelein homes and lead pipes

40%
of homes built before 1980 (Illinois 64%, US 50%)
6%
built before 1950 (Illinois 26%)
29%
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 Mundelein village (tables B25034, B25003). Estimates for small places have a margin of error.

Other water systems serving Mundelein

  • Dayspring Bible College Water System
    30 people · Groundwater · Illinois · lists this city
    Not in EPA's PFAS sample

How nearby cities compare

CityMain water systemPFASLead (90th pct.)
Vernon Hills 3 mi
Vernon Hills – Lake County Public Works
Vernon Hills – Lake County Public WorksNone above limits0 ppb
Buffalo Grove 8 mi
Buffalo Grove Water System
Buffalo Grove Water SystemNone above limits1.3 ppb
Gurnee 8 mi
Gurnee Water System
Gurnee Water SystemNone above limits0.3 ppb
North Chicago 8 mi
Great Lakes Naval Training Station Water System
Great Lakes Naval Training Station Water SystemNone above limits0 ppb
Round Lake Beach 9 mi
Round Lake Beach Water System
Round Lake Beach Water SystemNone above limits4.6 ppb
Waukegan 10 mi
Waukegan Water System
Waukegan Water SystemNone above limits10 ppb
Mundelein ZIP codes (1)
  • 60060

Questions

Is Mundelein tap water safe to drink?

Mundelein 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 Mundelein, IL?

2 public water systems serve parts of Mundelein. The largest is Mundelein Water System (31,500 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.

Does Mundelein tap water have PFAS?

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

Census estimates put 40% of Mundelein 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. Mundelein 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.