A87/100
Mentor Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 106,228 residents · Ohio
What's In Mentor's Tap Water?
70
Contaminants Tested
1
Exceed EPA Limits
0
Above EPA Goals
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 40.00 mg/L | 1.30 mg/L | Over Limit |
EPA Violation History
1
Violation (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Unresolved
Monitoring / Reporting Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2025 – June 30, 2025Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
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
AQUA OHIO - MENTOR
Population Served
74,500
Water Source
Surface Water
System ID
OH4301511
PAINESVILLE CITY PWS
Population Served
31,728
Water Source
Surface Water
System ID
OH4301611
Frequently Asked Questions About Mentor Water
Is Mentor tap water safe to drink?
Mentor, Ohio tap water receives a grade of A (87/100), which is considered excellent. Out of 70 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 Mentor's water?
Of the 70 contaminants tested in Mentor's water supply, the most notable include Copper (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 Mentor have any water quality violations?
Yes, Mentor has 5 EPA violation(s) on record, with the most recent in 2025. Violation types include MR, Other, MCL. 1 of these are health-based violations, which are the most serious category.
Do I need a water filter in Mentor?
Based on EPA data, using a water filter in Mentor 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 Mentor's tap water come from?
Mentor's drinking water is sourced from surface water and supplied by AQUA OHIO - MENTOR and 1 other water system(s). The system serves approximately 106,228 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Mentor'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. Mentor'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 Mentor's water compare to other cities in Ohio?
Mentor's water quality score of 87/100 earns a grade of A, which is considered excellent. This places Mentor among the better-performing water systems in Ohio. Visit our Ohio state page to see how all cities in the state compare.
What should I do if I'm concerned about Mentor's water quality?
If you have concerns about Mentor'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 (AQUA OHIO - MENTOR) 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.