Drinking water quality · 2024
· Verified
What's in Warren, MI tap water
31 contaminants were measured in the Warren, MI water system's 2024 annual report. Each is shown below against its federal limit.
- Reporting year
- 2024
- Contaminants measured
- 31
- Over federal limit
- 0
- Approaching the limit
- 0
- Service area
- MI
Where your water comes from · EPA SDWIS
Warren, 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. | 50 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. | 20 ug/LRunning annual avgLevel LRAA | 60 ug/LMCL | Within the limit |
PFAS ("forever chemicals")
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| PFOAPerfluorooctanoic acid, a PFAS 'forever chemical' once used in nonstick and stain-resistant products. | 2 ng/LReported levelSystem-wide | 4 ng/LMCL | Within the limit |
Disinfectants
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ChlorineA disinfectant added to drinking water to kill bacteria and viruses. | 0.95 mg/LRunning annual avgLevel RAA | 4 mg/LMRDLG | 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 |
| ManganeseA naturally occurring metal from soil and rock. | Not detected mg/LMaximumSystem-wide | None set | None detected |
| AluminumA common element sometimes used as a treatment coagulant. | 0.046 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| CalciumA naturally occurring mineral that contributes to water hardness. | 26.6 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| IronA naturally occurring metal common in groundwater. | 0.2 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. | 3 ug/L90th percentileAt the tap | 0 ug/LMCLG | Detected — no federal limit |
| MagnesiumA naturally occurring mineral that contributes to water hardness. | 7.7 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| PotassiumA naturally occurring mineral from rock and soil. | 1 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| SilicaA naturally occurring compound from sand and rock. | 2 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| SodiumA naturally occurring salt component. | 3.4 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| ZincA naturally occurring metal that can also enter water from corroding pipes. | 0 mg/LAverageSystem-wide | None set | Detected — no federal limit |
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| NitriteA compound from fertilizer runoff, sewage, and erosion of natural deposits. | Not detected mg/LMaximumSystem-wide | None set | None detected |
| ChlorideA naturally occurring salt compound. | 10.7 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| FluorideA mineral often added to drinking water to help prevent tooth decay. | 0.6 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 0.31 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| SulfateA naturally occurring mineral from rock and soil. | 24.5 mg/LAverageSystem-wide | None set | Detected — no federal limit |
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| AlkalinityA measure of the water's capacity to neutralize acids. | 70 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| Bicarbonate | 70 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| Chemical Oxygen Demand | 2.8 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| Dissolved Oxygen | 8.3 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| HardnessA measure of dissolved calcium and magnesium minerals. | 105 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| pHA measure of how acidic or basic the water is. | 7.24AverageSystem-wide | None set | Detected — no federal limit |
| Specific ConductanceA measure of how well water conducts electricity, which tracks dissolved mineral content. | 217AverageSystem-wide | None set | Detected — no federal limit |
| TemperatureThe measured temperature of the water sample. | 14.2AverageSystem-wide | None set | Detected — no federal limit |
| Total Dissolved SolidsTotal dissolved solids — the combined content of all dissolved minerals and salts. | 107 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| Total Solids | 130 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| TurbidityA measure of cloudiness from suspended particles in the water. | 0.07AverageSystem-wide | None set | Detected — no federal limit |
People also ask about Warren, MI's water
+Is Warren, MI tap water safe to drink in 2024?
Every one of the 31 contaminants measured in Warren, MI's 2024 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 Warren, MI tap water?
31 contaminants were measured in Warren, MI's 2024 Consumer Confidence Report, spanning metals, physical & aggregate, and inorganic chemicals. 6 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 Warren, MI's 2024 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 Warren, 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 2024 report; a new report will replace it once the utility publishes its next annual update.