A94/100
Round Lake Heights Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 2,622 residents · Illinois
What's In Round Lake Heights's Tap Water?
1
Contaminants Tested
0
Exceed EPA Limits
1
Above EPA Goals
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2018.
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
ROUND LAKE HEIGHTS
Population Served
2,622
Water Source
Purchased Surface Water
System ID
IL0970260
Frequently Asked Questions About Round Lake Heights Water
Is Round Lake Heights tap water safe to drink?
Round Lake Heights, Illinois tap water receives a grade of A (94/100), which is considered excellent. Out of 1 contaminants tested, none 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 Round Lake Heights's water?
Of the 1 contaminants tested in Round Lake Heights's water supply, the most notable include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Round Lake Heights have any water quality violations?
Yes, Round Lake Heights has 3 EPA violation(s) on record, with the most recent in 2018. Violation types include MR, Other. None of these are classified as health-based violations.
Do I need a water filter in Round Lake Heights?
Round Lake Heights 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. 1 contaminant(s) exceed these stricter goals.
Where does Round Lake Heights's tap water come from?
Round Lake Heights's drinking water is sourced from purchased surface water and supplied by ROUND LAKE HEIGHTS. The system serves approximately 2,622 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Round Lake Heights'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. Round Lake Heights'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 Round Lake Heights's water compare to other cities in Illinois?
Round Lake Heights's water quality score of 94/100 earns a grade of A, which is considered excellent. This places Round Lake Heights 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 Round Lake Heights's water quality?
If you have concerns about Round Lake Heights'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 (ROUND LAKE HEIGHTS) 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.