Drinking water quality · 2023
· Verified
What's in Detroit, MI tap water
10 contaminants were measured in the Detroit, MI water system's 2023 annual report. Each is shown below against its federal limit.
- Reporting year
- 2023
- Contaminants measured
- 10
- Over federal limit
- 0
- Approaching the limit
- 0
- Service area
- MI
Where your water comes from · EPA SDWIS
Detroit, MI buys its drinking water from GREAT LAKES WATER AUTHORITY.
Source
Treatment
Distribution
Also buys water from GREAT LAKES WATER AUTHORITY.
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TTHMTotal trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter. | 45.3 ug/LRunning annual avgLevel LRAA | 80 ug/LMCL | Within the limit |
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 24.5 ug/LRunning annual avgLevel LRAA | 60 ug/LMCL | Within the limit |
| BromateA disinfection byproduct formed when bromide-containing water is treated with ozone. | Not detected ug/LRangeof Quarterly Results | 0 ug/LMCLG | None detected |
Disinfectants
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ChlorineA disinfectant added to drinking water to kill bacteria and viruses. | 0.84 mg/LRunning annual avgLevel RAA | 4 mg/LMRDLG | Within the limit |
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| FluorideA mineral often added to drinking water to help prevent tooth decay. | 0.66 mg/LHighest single sampleSystem-wide | 4 mg/LMCLG | Within the limit |
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 0.38 mg/LHighest single sampleSystem-wide | 10 mg/LMCLG | Within the limit |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| CopperA metal that enters water from corroding household plumbing. | 0.1 mg/L90th percentileAt the tap | 1.3 mg/LMCLG | Within the limit |
| LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. | 13 ug/L90th percentileAt the tap | 0 ug/LMCLG | Detected — no federal limit |
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TOCTotal organic carbon — a measure of organic material dissolved in the water. | 2.03 mg/LReported levelSystem-wide | None set | Detected — no federal limit |
| TurbidityA measure of cloudiness from suspended particles in the water. | 0.28 NTUHighest single sampleSingle Measurement Cannot Exceed 1 NTU | None set | Detected — no federal limit |
People also ask about Detroit, MI's water
+Is Detroit, MI tap water safe to drink in 2023?
Every one of the 10 contaminants measured in Detroit, MI's 2023 Consumer Confidence Report is below its federal limit. "Safe" under the EPA's drinking-water standards is health-based, not aesthetic — but by those standards, no measured contaminant in this report exceeds its enforceable threshold. Individual health concerns (e.g. immunocompromised, infant, pregnancy) may warrant additional filtering regardless of compliance.
+What contaminants are in Detroit, MI tap water?
10 contaminants were measured in Detroit, MI's 2023 Consumer Confidence Report, spanning disinfection byproducts, inorganic chemicals, and metals. 8 have an enforceable federal limit; the rest are detected but unregulated. Every measured value, in the utility's own units, is on this page.
+Where does the data on this page come from?
Every value is transcribed from Detroit, MI's 2023 Consumer Confidence Report — the annual drinking-water report every U.S. public water utility is required by federal law to publish. The original source document is archived and viewable on this site. A water-quality report covers an entire service area, not a single address.
+How often is Detroit, MI's water quality data updated?
Each U.S. public water utility publishes one Consumer Confidence Report per year, covering the prior calendar year's measurements. This page reflects the 2023 report; a new report will replace it once the utility publishes its next annual update.