A82/100
Libertyville Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 83,479 residents · Illinois
What's In Libertyville's Tap Water?
69
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: July 1, 2024 – September 30, 2024Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
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
LCPW - BROOKS FARM SUBDIVISION
Population Served
1,563
Water Source
Groundwater
System ID
IL0970280
LIBERTYVILLE
Population Served
20,500
Water Source
Purchased Surface Water
System ID
IL0970900
VERNON HILLS - LAKE CO PW
Population Served
33,207
Water Source
Purchased Surface Water
System ID
IL0971750
COUNTRYSIDE LAKE SUBDIVISION -LAKE CO PW
Population Served
1,287
Water Source
Groundwater
System ID
IL0975200
FOX LAKE HILLS SUBDIVISION - LAKE CO PW
Population Served
2,628
Water Source
Purchased Surface Water
System ID
IL0975550
GRANDWOOD PARK SUBDIVISION - LAKE CO PW
Population Served
5,751
Water Source
Purchased Surface Water
System ID
IL0975600
LCPW - PEKARA SUBDIVISION
Population Served
3,711
Water Source
Groundwater
System ID
IL0975900
WILDWOOD SUBDIVISION - LAKE CO PW
Population Served
14,832
Water Source
Purchased Surface Water
System ID
IL0977350
Frequently Asked Questions About Libertyville Water
Is Libertyville tap water safe to drink?
Libertyville, Illinois tap water receives a grade of A (82/100), which is considered excellent. Out of 76 contaminants tested, 1 exceed EPA maximum contaminant levels (MCLs) and 1 exceed health guidelines (MCLGs). While the water meets federal standards, some residents may still choose to use a filter for additional peace of mind.
What contaminants are in Libertyville's water?
Of the 76 contaminants tested in Libertyville's water supply, the most notable include Lead (90th percentile). 1 contaminant(s) exceed EPA legal limits (MCLs). 1 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Libertyville have any water quality violations?
Yes, Libertyville has 55 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MR, MCL. 16 of these are health-based violations, which are the most serious category.
Do I need a water filter in Libertyville?
Based on EPA data, using a water filter in Libertyville is recommended. 1 contaminant(s) exceed legal limits. An NSF-certified filter — such as a reverse osmosis or activated carbon system — can effectively reduce many common contaminants. Choose a filter certified to remove the specific contaminants found in your area.
Where does Libertyville's tap water come from?
Libertyville's drinking water is sourced from groundwater and supplied by LCPW - BROOKS FARM SUBDIVISION and 7 other water system(s). The system serves approximately 83,479 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Libertyville'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. Libertyville'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 Libertyville's water compare to other cities in Illinois?
Libertyville's water quality score of 82/100 earns a grade of A, which is considered excellent. This places Libertyville 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 Libertyville's water quality?
If you have concerns about Libertyville'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 (LCPW - BROOKS FARM SUBDIVISION) 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.