Tap Water Results

Is Lockport, 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 Illinois American Water – Homer Township.

6 public water systems serve parts of Lockport. The largest, Illinois American Water – Homer Township, serves 24,543 people. Your water bill names your system.

Largest system

Illinois American Water – Homer Township

24,543 people · Purchased surface water · EPA ID IL1970100

Buys treated water from Illinois American Water – Lake Water Company, Orland Park Water System.

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: 0 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.

Lockport homes and lead pipes

32%
of homes built before 1980 (Illinois 64%, US 50%)
14%
built before 1950 (Illinois 26%)
15%
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 Lockport city (tables B25034, B25003). Estimates for small places have a margin of error.

Other water systems serving Lockport

  • Lockport Water System
    23,100 people · Groundwater · Illinois · lists this city
    PFHxS detectedAlso: Lithium above screening level
  • Corinth Public Water District
    3,927 people · Purchased surface water · Illinois · reported ZIPs here
    No PFAS above limits
  • Bonnie Brae Forest Manor Sndst Water System
    1,338 people · Purchased groundwater · Illinois · lists this city
    Not in EPA's PFAS sample
  • Lockport Heights Sanitary District
    984 people · Purchased groundwater · Illinois · lists this city
    Not in EPA's PFAS sample
  • College View Subdivision
    570 people · Groundwater · Illinois · lists this city
    Not in EPA's PFAS sample

How nearby cities compare

CityMain water systemPFASLead (90th pct.)
Romeoville 4 mi
Romeoville Water System
Romeoville Water SystemNone above limits8.22 ppb
New Lenox 6 mi
New Lenox Water System
New Lenox Water SystemNone above limits0 ppb
Bolingbrook 8 mi
Illinois American Water – West Suburban
Illinois American Water – West SuburbanNone above limits0 ppb
Joliet 8 mi
Joliet Water System
Joliet Water SystemNone above limits6.53 ppb
Orland Park 9 mi
Orland Park Water System
Orland Park Water SystemNone above limits0 ppb
Woodridge 10 mi
Woodridge Water System
Woodridge Water SystemNone above limits0 ppb
Lockport ZIP codes (1)
  • 60441

Questions

Is Lockport tap water safe to drink?

Illinois American Water – Homer Township 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 Lockport, IL?

6 public water systems serve parts of Lockport. The largest is Illinois American Water – Homer Township (24,543 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.

Does Lockport tap water have PFAS?

None detected above EPA's reporting limits. Illinois American Water – Homer Township 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 Lockport homes have lead pipes?

Census estimates put 32% of Lockport 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. Illinois American Water – Homer Township'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.