Is Calumet City, MI Tap Water Safe to Drink?
Graded A+ with no contaminants above EPA limits. Here's everything we tested and how Calumet City ranks. What to do next ↓
96/100
waterverge.com Calumet City, MI — Water Quality Report
Calumet City's drinking water received a grade of A+ (96 out of 100), indicating excellent water quality. The city's 1 water system serves approximately 677 residents using purchased surface water.
Lead levels were measured at 0.0 ppb (90th percentile), well within EPA limits. This system has not yet been tested for PFAS under the EPA UCMR 5 program.
No violations are on record for this water system.
What to know about Calumet City's water
Calumet City ranks #13 out of 520 cities in Michigan for water quality, placing it one of the best in the state.
The city draws from surface water sources, which are more susceptible to seasonal runoff and agricultural contamination, requiring extensive multi-barrier treatment including coagulation, filtration, and disinfection.
As a small community water system, Calumet City may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Calumet City has a clean compliance record with no violations on file, reflecting strong operational practices.
Water quality score
See methodology →Is Calumet City, MI water safe to drink?
Based on EPA testing data, Calumet City's tap water is generally safe to drink. The water system earned a grade of A+ (96/100), meeting federal drinking water standards across key contaminant categories. The city's 1 water system serves approximately 677 residents using surface water (rivers, lakes, or reservoirs).
Recent water quality updates for Calumet City
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Calumet City's water quality assessment. Grade: A+ (96/100).
Federal disaster declaration (FEMA DR-4757). Flood event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-4195). Flood event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Calumet City's water supply.
Well within EPA limits.
Flood & environmental risk
Oakland County has experienced 4 federally declared disasters since 1975. Flooding and severe storms can overwhelm water treatment plants, cause sewage overflows, and introduce agricultural runoff, bacteria, and sediment into drinking water supplies. Local water sources include Clinton River, River Rouge, Upper River Rouge.
Where does Calumet City's water come from?
Calumet City's drinking water comes from surface water (rivers, lakes, or reservoirs), supplied by 1 water system serving approximately 677 people. Surface water sources are more susceptible to contamination from runoff, industrial discharge, and algal blooms, requiring extensive treatment. Nearby water bodies include Clinton River (river), River Rouge (river), Upper River Rouge (river).
What Calumet City residents can do
Your water utility is required to publish an annual Consumer Confidence Report (CCR) with detailed testing results. Ask for the latest copy or check your utility's website.
Calumet City's area has a history of flooding. After severe weather, watch for boil water advisories from your local utility.
Data: EPA SDWIS, UCMR 5 (PFAS), FEMA, NOAA. Last updated May 2026.
Top contaminants to know
View all ↓Violations & advisories
Flood & disaster history
Oakland County has experienced 4 federally declared disasters since 1975. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
Full contaminants report
| Contaminant | Detected Level | EPA Limit | Unit | Category | Status |
|---|---|---|---|---|---|
| Lead (90th percentile) LeadHeavy Metal A toxic heavy metal that can leach into drinking water from older pipes, solder, and fixtures. No amount of lead in water is considered safe. Health EffectsBrain and nervous system damage in children, kidney damage, high blood pressure, and reproductive problems in adults. EPA Limit15 ppb action level Common SourcesCorrosion of lead pipes, lead solder, brass faucets, and household plumbing. | 0.0 | 15 | ppb | Inorganic | Safe |
Lead level (90th percentile)
Latest reading: 0.0 ppb (2025)
EPA action level: 15 ppb
See how Calumet City compares by contaminant
Explore where Calumet City ranks among all Michigan cities for specific contaminants.
Water source & infrastructure
Where Calumet City's water comes from
Calumet City's drinking water comes primarily from surface water sources such as rivers, lakes, or reservoirs.
Surface water systems require multi-stage treatment including coagulation, sedimentation, filtration, and disinfection to meet EPA Safe Drinking Water Act standards.
These sources can be impacted by seasonal changes, stormwater runoff, upstream agriculture, and industrial discharge.
The system is operated by local government ownership and serves approximately 677 people through 1 water system.
Water bodies near Calumet City
Calumet City is located near 3 notable water bodies. As a surface water system, these water bodies may directly influence the city's drinking water supply.
Water systems serving Calumet City
| System Name | PWSID | Population | Source |
|---|---|---|---|
| RIVER OAKS ESTATES MHP | IL0310395 | 677 | SWP |
How Calumet City compares
Full Michigan rankings →Calumet City's score of 96/100 is above the average of 70/100 among major Michigan cities. It outscores 10 of 10 nearby cities.
Nearby cities
View Michigan rankings →About Calumet City, MI
Learn more about your water
Guides and resources related to Calumet City's water quality findings.
Explore water quality across Cook
Frequently asked questions
Is Calumet City, MI tap water safe to drink?
Calumet City's water quality earned a grade of A+ (96/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #13 out of 520 cities tested in Michigan.
What contaminants are in Calumet City's water?
Lead was measured at 0.0 ppb (90th percentile). No violations on record.
How is Calumet City's water quality grade calculated?
The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.
Do I need a water filter in Calumet City?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Calumet City's water come from?
Calumet City's water is sourced from Purchased surface water. The city has 1 water system serving approximately 677 residents.
How does Calumet City's water compare to other cities?
Calumet City ranks #13 out of 520 cities in Michigan (better than 98% of state cities) and #250 out of 15744 cities nationally (98th percentile). The grade of A+ reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Calumet City's small water system affect quality?
Calumet City's system serves approximately 677 residents. Small community water systems (under 3,300 people) may have fewer financial resources for infrastructure upgrades and advanced treatment technologies. However, they are held to the same EPA drinking water standards as larger systems. This system has maintained a clean compliance record.