Water Quality Report · Updated October 07, 2026
AQUA OHIO - MASSILLON PWS
AQUA OHIO - MASSILLON PWS delivers tap water graded C (69/100) by TapWaterSafety.org. The utility serves approximately 95,636 residents in MASSILLON, Ohio using groundwater. The most significant water quality concerns are: Arsenic significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline; Dibromochloromethane significantly above health guideline. For questions, the utility can be reached at 330-832-5764.
Is MASSILLON tap water safe to drink?
AQUA OHIO - MASSILLON PWS delivers tap water that earns a grade of C (69/100) from TapWaterSafety.org — an average rating, with several contaminants above health guidelines but generally compliant with US legal limits.
The utility serves 95,636 residents in MASSILLON, drawing from groundwater. Despite being legal under US EPA standards, this water would fail the European Union's Drinking Water Directive, primarily due to arsenic significantly above health guideline.
Public testing data identifies 11 contaminants in this water above EWG's health-based guidelines, including: Arsenic, Total trihalomethanes (TTHMs), Dibromochloromethane, Haloacetic acids (HAA9), Bromodichloromethane, Dibromoacetic acid, Bromoform, Haloacetic acids (HAA5), Chromium (hexavalent), Chloroform, Dichloroacetic acid. For most residents, a properly certified home filter at the kitchen tap is the most cost-effective way to reduce exposure to whatever's in your water. See our filter recommendations below, matched specifically to this utility's contaminant profile.
EPA compliance record
Official U.S. EPA records for AQUA OHIO - MASSILLON PWS (system ID OH7604512) for the last 3 years. Checked 2026-10-07.
| Rule | Type | Since | Status |
|---|---|---|---|
| Consumer Confidence Rule | Other (e.g. public notice) | 02/06/2020 | Open |
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Quick actions for MASSILLON residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for AQUA OHIO - MASSILLON PWS.
Arsenic significantly above health guideline
Moderate concernArsenic detected at 1.35 ppb, 338x above the EWG health guideline of 0.004 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 30.9 ppb, 206x above the EWG health guideline of 0.15 ppb.
Dibromochloromethane significantly above health guideline
Moderate concernDibromochloromethane detected at 12.1 ppb, 121x above the EWG health guideline of 0.1 ppb.
Contact AQUA OHIO - MASSILLON PWS
Reach the utility directly for service issues, water quality concerns, or to request your Consumer Confidence Report.
General Contact
Treatment Plant
Recommended water filters for MASSILLON
Filters matched to the specific contaminants in this water supply.
Reverse osmosis certified for arsenic (NSF/ANSI 58)
$429-$599Reverse osmosis certified under NSF/ANSI 58 for arsenic is the most reliable home option.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts like TTHM. Look for NSF/ANSI 53 VOC or chloroform reduction.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
Score breakdown
This utility's overall score of 69/100 breaks down across five weighted components. Read the full methodology →
Contaminants detected — international standards comparison
Every contaminant detected, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal (the strictest US benchmark). 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 |
|---|---|---|---|---|---|---|---|---|
| Arsenic Heavy metal |
1.35 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 338× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
30.9 ppb | 0.15 | 80.0 | 100 | — | — | — | 206× over |
| Dibromochloromethane Disinfection byproduct |
12.1 ppb | 0.1 | — | — | — | — | — | 121× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
7.21 ppb | 0.06 | — | — | — | — | — | 120× over |
| Bromodichloromethane Disinfection byproduct |
6.77 ppb | 0.06 | — | — | — | — | — | 113× over |
| Dibromoacetic acid Disinfection byproduct |
3.08 ppb | 0.03 | — | — | — | — | — | 103× over |
| Bromoform Disinfection byproduct |
9.1 ppb | 0.5 | — | — | — | — | — | 18× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
1.03 ppb | 0.1 | 60.0 | 60 | — | — | — | 10× over |
| Chromium (hexavalent) Heavy metal |
0.195 ppb | 0.02 | — | — | — | — | — | 9.8× over |
| Chloroform Disinfection byproduct |
2.88 ppb | 0.4 | — | — | — | — | — | 7.2× over |
| Dichloroacetic acid Disinfection byproduct |
0.583 ppb | 0.2 | — | — | — | — | — | 2.9× over |
| Manganese Heavy metal |
85.0 ppb | 100.0 | — | 50 | 80 | — | — | Fails EU |
| 1,4-Dioxane Semi-volatile organic compound |
0.235 ppb | 0.35 | — | — | 50 | 1 | — | Below guideline |
| Chlorate Disinfection byproduct |
73.3 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
66.5 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Molybdenum Other |
0.95 ppb | 40.0 | — | — | — | — | — | Below guideline |
| 1,1-Dichloroethane Volatile organic compound |
0.0657 ppb | 3.0 | — | — | — | — | — | Below guideline |
| Vanadium Other |
0.4 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Perfluorohexanoic Acid (PFHxA) PFAS |
1.55 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluoropentanoic Acid (PFPeA) PFAS |
1.5 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.0993 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.562 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Lithium Other |
11.0 ppb | — | — | — | — | — | — | 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 (4th ed.), California OEHHA PHGs, EWG Tap Water Database.
AQUA OHIO - MASSILLON PWS service area
This water system serves 1 community in Stark County, Ohio. Click any city for its dedicated tap water quality page.
Find the right filter for MASSILLON water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.