Tap Water Quality Report
Tap water quality in Toledo, Ohio
Tap water in Toledo, Ohio receives a grade of D (69/100) from TapWaterSafety.org. It's served by TOLEDO CITY OF. The most significant water quality concerns are: Total trihalomethanes (TTHMs) significantly above health guideline; Haloacetic acids (HAA9) significantly above health guideline; Bromodichloromethane significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in Toledo's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving Toledo.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 42.3 ppb, 282x above the EWG health guideline of 0.15 ppb.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 15.3 ppb, 255x above the EWG health guideline of 0.06 ppb.
Bromodichloromethane significantly above health guideline
Moderate concernBromodichloromethane detected at 10.0 ppb, 167x above the EWG health guideline of 0.06 ppb.
EPA compliance record
Official U.S. EPA records for TOLEDO CITY OF (system ID OH4801411) for the last 3 years. Checked 2026-10-07.
| Rule | Type | Since | Status |
|---|---|---|---|
| Lead and Copper Rule Revisions | Missed reporting | 07/02/2025 | Open |
| Consumer Confidence Rule | Other (e.g. public notice) | 01/25/2024 | Open |
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Recommended filters for Toledo
Filters matched to the specific contaminants in Toledo's water supply.
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.
All contaminants detected in Toledo'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 |
|---|---|---|---|---|---|---|---|---|
| Total trihalomethanes (TTHMs) Disinfection byproduct |
42.3 ppb | 0.15 | 80.0 | 100 | — | — | — | 282× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
15.3 ppb | 0.06 | — | — | — | — | — | 255× over |
| Bromodichloromethane Disinfection byproduct |
10.0 ppb | 0.06 | — | — | — | — | — | 167× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
10.9 ppb | 0.1 | 60.0 | 60 | — | — | — | 109× over |
| Dibromoacetic acid Disinfection byproduct |
2.28 ppb | 0.03 | — | — | — | — | — | 76× over |
| Chloroform Disinfection byproduct |
25.0 ppb | 0.4 | — | — | — | — | — | 62× over |
| Dibromochloromethane Disinfection byproduct |
6.13 ppb | 0.1 | — | — | — | — | — | 61× over |
| Dichloroacetic acid Disinfection byproduct |
6.66 ppb | 0.2 | — | — | — | — | — | 33× over |
| Chromium (hexavalent) Heavy metal |
0.219 ppb | 0.02 | — | — | — | — | — | 11× over |
| Trichloroacetic acid Disinfection byproduct |
0.846 ppb | 0.1 | — | — | — | — | — | 8.5× over |
| Nitrate Inorganic |
0.959 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 6.9× over |
| Nitrate and nitrite Inorganic |
0.966 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 6.9× over |
| Bromoform Disinfection byproduct |
1.22 ppb | 0.5 | — | — | — | — | — | 2.4× over |
| Chlorite Disinfection byproduct |
65.5 ppb | 50.0 | 1000.0 | — | — | — | — | 1.3× over |
| Chlorate Disinfection byproduct |
68.1 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Molybdenum Other |
1.77 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
1.79 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Vanadium Other |
0.671 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
5.0 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
0.478 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Strontium Radiological |
0.141 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.951 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 TOLEDO CITY OF.