A84/100
Marine Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 1,037 residents · Illinois
What's In Marine's Tap Water?
2
Contaminants Tested
1
Exceed EPA Limits
1
Above EPA Goals
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 2.20 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Unresolved
Surface water treatment technique failure
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
MARINE
Population Served
1,037
Water Source
Purchased Surface Water
System ID
IL1190700
Frequently Asked Questions About Marine Water
Is Marine tap water safe to drink?
Marine, Illinois tap water receives a grade of A (84/100), which is considered excellent. Out of 2 contaminants tested, 1 exceed EPA maximum contaminant levels (MCLs) and 2 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 Marine's water?
Of the 2 contaminants tested in Marine's water supply, the most notable include Copper (90th percentile), Lead (90th percentile). 1 contaminant(s) exceed EPA legal limits (MCLs). 2 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Marine have any water quality violations?
Yes, Marine has 5 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MR. None of these are classified as health-based violations.
Do I need a water filter in Marine?
Based on EPA data, using a water filter in Marine 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 Marine's tap water come from?
Marine's drinking water is sourced from purchased surface water and supplied by MARINE. The system serves approximately 1,037 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Marine'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. Marine'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 Marine's water compare to other cities in Illinois?
Marine's water quality score of 84/100 earns a grade of A, which is considered excellent. This places Marine 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 Marine's water quality?
If you have concerns about Marine'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 (MARINE) 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.