B79/100
Blue Island Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 21,494 residents · Illinois
What's In Blue Island's Tap Water?
69
Contaminants Tested
0
Exceed EPA Limits
1
Above EPA Goals
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2023 – July 3, 2024Enforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2022 – July 27, 2022Enforcement: 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
BLUE ISLAND
Population Served
21,494
Water Source
Purchased Surface Water
System ID
IL0310240
Frequently Asked Questions About Blue Island Water
Is Blue Island tap water safe to drink?
Blue Island, Illinois tap water receives a grade of B (79/100), which is considered good. Out of 69 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 Blue Island's water?
Of the 69 contaminants tested in Blue Island'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 Blue Island have any water quality violations?
Yes, Blue Island has 10 EPA violation(s) on record, with the most recent in 2023. Violation types include Other, MR, TT. 2 of these are health-based violations, which are the most serious category.
Do I need a water filter in Blue Island?
Blue Island 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 Blue Island's tap water come from?
Blue Island's drinking water is sourced from purchased surface water and supplied by BLUE ISLAND. The system serves approximately 21,494 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Blue Island'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. Blue Island'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 Blue Island's water compare to other cities in Illinois?
Blue Island's water quality score of 79/100 earns a grade of B, which is considered good. This is an above-average score compared to many cities nationwide. Visit our Illinois state page to see how all cities in the state compare.
What should I do if I'm concerned about Blue Island's water quality?
If you have concerns about Blue Island'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 (BLUE ISLAND) 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.