Tap Water Quality Report
Tap water quality in Detroit, Michigan
Tap water in Detroit, Michigan receives a grade of B (82/100) from TapWaterSafety.org. It's served by DETROIT CITY OF. The most significant water quality concerns are: PFAS contamination; 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 Detroit's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving Detroit.
PFAS contamination
Severe concernPerfluorooctane sulfonate (PFOS)* detected. PFAS are persistent chemicals linked to cancer and immune effects with no known safe exposure threshold.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 20.1 ppb, 335x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 24.9 ppb, 166x above the EWG health guideline of 0.15 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 12.4 ppb, 124x above the EWG health guideline of 0.1 ppb.
EPA compliance record
Official U.S. EPA records for DETROIT CITY OF (system ID MI0001800) for the last 3 years. Checked 2026-10-07.
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 Detroit
Filters matched to the specific contaminants in Detroit's water supply.
Filter certified for PFOA/PFOS (NSF/ANSI 53 or 58)
$180-$750Reverse osmosis and some carbon block filters reduce PFAS. Look for certification to NSF/ANSI 53 or 58 for PFOA/PFOS.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC 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 Detroit'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 |
20.1 ppb | 0.06 | — | — | — | — | — | 335× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
24.9 ppb | 0.15 | 80.0 | 100 | — | — | — | 166× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
12.4 ppb | 0.1 | 60.0 | 60 | — | — | — | 124× over |
| Chromium (hexavalent) Heavy metal |
0.116 ppb | 0.02 | — | — | — | — | — | 5.8× over |
| Nitrate* Inorganic |
0.455 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 3.2× over |
| Perfluorooctane sulfonate (PFOS)* PFAS |
0.057 ppt | 0.3 | 4.0 | 100 | 100 | 1 | — | Below guideline |
| Perfluoropentanoic Acid (PFPeA)* PFAS |
16.1 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Vanadium Other |
0.194 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
0.0969 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Strontium Radiological |
0.106 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Fluoride* Inorganic |
0.588 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 DETROIT CITY OF.
General Contact
Treatment Plant
ZIP codes served
Detroit's public water systems serve the following ZIP codes: