Is Glendale Heights, 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 Glendale Heights Water System.
Glendale Heights Water System supplies Glendale Heights (33,176 people).
Water system
Glendale Heights Water System
33,176 people · Purchased surface water · EPA ID IL0430400
Buys treated water from Du Page Water Commission, Carol Stream Water System.
| PFAS | Highest average | Limit |
|---|---|---|
| PFOA Not detected | – | 4 ppt |
| PFOS Not detected | – | 4 ppt |
| PFHxS Not detected | – | 10 ppt |
| PFNA Not detected | – | 10 ppt |
| HFPO-DA (GenX) Not detected | – | 10 ppt |
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: 0 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.
Glendale Heights homes and lead pipes
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 Glendale Heights village (tables B25034, B25003). Estimates for small places have a margin of error.
How nearby cities compare
| City | PFAS | Lead (90th pct.) |
|---|---|---|
| Carol Stream 3 mi Carol Stream Water System | None above limits | 1.05 ppb |
| Addison 4 mi Addison Water System | None above limits | 2 ppb |
| Glen Ellyn 4 mi Glen Ellyn Water System | None above limits | 1.87 ppb |
| Lombard 4 mi Lombard Water System | None above limits | 10.6 ppb |
| Wheaton 5 mi Wheaton Water System | None above limits | 2.32 ppb |
| Hanover Park 6 mi Hanover Park Water System | None above limits | 2.47 ppb |
Glendale Heights ZIP codes (1)
- 60139
Questions
Is Glendale Heights tap water safe to drink?
Glendale Heights 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 Glendale Heights, IL?
Glendale Heights Water System, which serves 33,176 people.
Does Glendale Heights tap water have PFAS?
None detected above EPA's reporting limits. Glendale Heights 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 Glendale Heights homes have lead pipes?
Census estimates put 57% of Glendale Heights 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. Glendale Heights 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.