Is Capac, MI Tap Water Safe to Drink?
Graded B+, with 5 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
81.1/100
waterverge.com Capac, MI — Water Quality Report
Capac's drinking water received a grade of B+ (81.1 out of 100), indicating good water quality. The city's 1 water system serves approximately 1,775 residents using groundwater.
Lead data is not currently available for this system. This system has not yet been tested for PFAS under the EPA UCMR 5 program.
The system has 46 violations on record, including 1 health-based violation. 5 remain unresolved.
What to know about Capac's water
Capac ranks #342 out of 520 cities in Michigan for water quality, placing it below average in the state.
Capac relies on groundwater, which is generally less vulnerable to surface contamination but can be affected by naturally occurring minerals like arsenic and nitrate, as well as agricultural and industrial runoff.
As a small community water system, Capac may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
The system has seen 6 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.
Water quality score
See methodology →Is Capac, MI water safe to drink?
Capac's drinking water has significant quality concerns based on EPA testing data. With a grade of B+ (81.1/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 1,775 residents using groundwater (wells).
Recent water quality updates for Capac
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Capac's water quality assessment. Grade: B+ (81.1/100).
Contaminants: Chlorine.
Contaminants: Consumer Confidence Rule, Arsenic.
Contaminants: Arsenic.
Violation history
Capac's water system has 46 total violations on record, including 1 health-based violation. 5 remain unresolved. 6 violations were issued in the last 5 years.
Where does Capac's water come from?
Capac's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 1,775 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate.
What Capac residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Capac's water.
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.
Data: EPA SDWIS, UCMR 5 (PFAS), FEMA, NOAA. Last updated May 2026.
Violation summary
Violations & advisories
Full contaminants report
No contaminant data available for this city.
See how Capac compares by contaminant
Explore where Capac ranks among all Michigan cities for specific contaminants.
Water source & infrastructure
Where Capac's water comes from
Capac's drinking water is drawn from underground aquifers through wells.
Groundwater is naturally filtered through rock and soil layers, generally requiring less treatment than surface water. However, it can contain naturally occurring contaminants like arsenic, radon, and minerals.
Agricultural activity, septic systems, and industrial operations near well fields can introduce nitrates, pesticides, and volatile organic compounds.
The system is operated by local government ownership and serves approximately 1,775 people through 1 water system.
Water systems serving Capac
| System Name | PWSID | Population | Source |
|---|---|---|---|
| CAPAC, VILLAGE OF | MI0001110 | 1,775 | GW |
How Capac compares
Full Michigan rankings →Capac's score of 81.1/100 is above the average of 70/100 among major Michigan cities. It outscores 5 of 10 nearby cities.
Nearby cities
View Michigan rankings →About Capac, MI
Learn more about your water
Guides and resources related to Capac's water quality findings.
Explore water quality across St. Clair
Frequently asked questions
Is Capac, MI tap water safe to drink?
Capac's water quality earned a grade of B+ (81.1/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #342 out of 520 cities tested in Michigan.
What contaminants are in Capac's water?
46 violations are on record.
How is Capac'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 Capac?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Capac's water come from?
Capac's water is sourced from Groundwater. The city has 1 water system serving approximately 1,775 residents.
What health violations has Capac's water system had?
Capac has 1 health-based violation on record. The most recent violation was recorded in August 2024. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 5 violations remain unresolved.
Is Capac's groundwater at risk of contamination?
Capac uses groundwater, which can be affected by naturally occurring contaminants like arsenic, radon, and nitrate, as well as agricultural runoff and industrial activity. The system has 46 violations on record that may relate to groundwater quality. Groundwater systems are generally less susceptible to surface contamination but should be monitored for emerging contaminants like PFAS.
How does Capac's water compare to other cities?
Capac ranks #342 out of 520 cities in Michigan (better than 34% of state cities) and #7594 out of 15744 cities nationally (52th percentile). The grade of B+ reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Capac's small water system affect quality?
Capac's system serves approximately 1,775 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 46 violations on record.