Tap Water Quality Report
Tap water quality in MENTOR, Ohio
Tap water in MENTOR, Ohio receives a grade of D (65/100) from TapWaterSafety.org. It's served by AQUA OHIO - MENTOR. The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in MENTOR's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving MENTOR.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 39.5 ppb, 659x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 42.0 ppb, 280x above the EWG health guideline of 0.15 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 25.9 ppb, 259x above the EWG health guideline of 0.1 ppb.
Recommended filters for MENTOR
Filters matched to the specific contaminants in MENTOR's water supply.
Carbon block (NSF/ANSI 42 + 53)
$40-$750Activated carbon is highly effective for disinfection byproducts like TTHM and HAA5.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
All contaminants detected in MENTOR's tap water
Every contaminant identified, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal. Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Haloacetic acids (HAA9) Disinfection byproduct |
39.5 ppb | 0.06 | — | — | — | — | — | 659× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
42.0 ppb | 0.15 | 80.0 | 100 | — | — | — | 280× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
25.9 ppb | 0.1 | 60.0 | 60 | — | — | — | 259× over |
| Bromodichloromethane Disinfection byproduct |
10.9 ppb | 0.06 | — | — | — | — | — | 182× over |
| Trichloroacetic acid Disinfection byproduct |
11.2 ppb | 0.1 | — | — | — | — | — | 112× over |
| Chloroform Disinfection byproduct |
27.5 ppb | 0.4 | — | — | — | — | — | 69× over |
| Dichloroacetic acid Disinfection byproduct |
12.5 ppb | 0.2 | — | — | — | — | — | 62× over |
| Dibromochloromethane Disinfection byproduct |
3.4 ppb | 0.1 | — | — | — | — | — | 34× over |
| Dibromoacetic acid Disinfection byproduct |
0.721 ppb | 0.03 | — | — | — | — | — | 24× over |
| Nitrate and nitrite Inorganic |
1.1 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 7.9× over |
| Chromium (hexavalent) Heavy metal |
0.1 ppb | 0.02 | — | — | — | — | — | 5.0× over |
| Thallium Heavy metal |
0.367 ppb | 0.1 | 2.0 | — | — | — | — | 3.7× over |
| Nitrate Inorganic |
0.157 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 1.1× over |
| Chlorate Disinfection byproduct |
131.3 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Antimony Heavy metal |
0.31 ppb | 1.0 | 6.0 | 10 | 20 | 1 | — | Below guideline |
| Bromoform Disinfection byproduct |
0.109 ppb | 0.5 | — | — | — | — | — | Below guideline |
| Molybdenum Other |
1.34 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
1.51 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
18.2 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Vanadium Other |
0.121 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
0.136 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Strontium Radiological |
0.18 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Chromium (total) Heavy metal |
0.4 ppb | — | 100.0 | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.887 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines, California OEHHA PHGs, EWG Tap Water Database.
Treatment plant contact info
For service issues, water quality concerns, or to request a Consumer Confidence Report from AQUA OHIO - MENTOR.