Lockport, Illinois Water Quality Report
Water quality data for 4 water systems serving 25,992 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 65.0 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 650% | Above guideline |
| PFBS | 0.003 | No federal limit | 2000.0 ug/L(EPA Health Advisory) | 0% | Below guideline |
| PFHxA | 0.004 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFHxS | 0.009 | 0.010 ug/L | 0.001 ug/L(EWG) | 92% | Near limit |
| PFPeA | 0.008 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
Recommended Water Filters
Based on the contaminants detected in your water supply, these filtration systems are recommended:
Reverse Osmosis (RO)
Reverse osmosis systems remove up to 99% of PFAS compounds. Recommended for homes with detected PFAS.
Up to 99% PFAS removal
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Compliance & Violations
Active Violations (45)
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Resolved Violations (423)
72
Jul 1, 2025
72
Jul 1, 2025
72
Jul 1, 2023
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Jul 1, 2023
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Jul 1, 2023
+ 418 more resolved violations
Frequently Asked Questions
Is Lockport tap water safe to drink?
Lockport's water meets all EPA maximum contaminant levels. However, 5 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.
What contaminants are in Lockport tap water?
5 contaminants have been detected in Lockport's water supply across 4 water systems. See the full contaminant table above for details.
How can I improve my water quality in Lockport?
Install a water filter rated for the specific contaminants found in Lockport's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Lockport have any water quality violations?
Yes, Lockport currently has 45 active violations. See the violations section above for details.