A83/100
Palos Hills Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 18,530 residents · Illinois
What's In Palos Hills's Tap Water?
69
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2020.
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Water Utility Details
PALOS HILLS
Population Served
18,530
Water Source
Purchased Surface Water
System ID
IL0312400
Frequently Asked Questions About Palos Hills Water
Is Palos Hills tap water safe to drink?
Palos Hills, Illinois tap water receives a grade of A (83/100), which is considered excellent. Out of 69 contaminants tested, none exceed EPA maximum contaminant levels (MCLs). While the water meets federal standards, some residents may still choose to use a filter for additional peace of mind.
What contaminants are in Palos Hills's water?
69 contaminants were tested in Palos Hills's water supply. No contaminants exceed EPA legal limits (MCLs) or health goals (MCLGs), which is a positive indicator of water quality.
Does Palos Hills have any water quality violations?
Yes, Palos Hills has 5 EPA violation(s) on record, with the most recent in 2020. Violation types include MR, MCL. 3 of these are health-based violations, which are the most serious category.
Do I need a water filter in Palos Hills?
Palos Hills water meets EPA standards, so a filter is not strictly necessary. However, some residents prefer the added security of a water filter. EPA health goals (MCLGs) are stricter than legal limits and are set at levels with zero expected health risk. All contaminants are within health goals.
Where does Palos Hills's tap water come from?
Palos Hills's drinking water is sourced from purchased surface water and supplied by PALOS HILLS. The system serves approximately 18,530 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Palos Hills's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Palos Hills's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does Palos Hills's water compare to other cities in Illinois?
Palos Hills's water quality score of 83/100 earns a grade of A, which is considered excellent. This places Palos Hills among the better-performing water systems in Illinois. Visit our Illinois state page to see how all cities in the state compare.
What should I do if I'm concerned about Palos Hills's water quality?
If you have concerns about Palos Hills's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (PALOS HILLS) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.