Is Mayville, MI Tap Water Safe to Drink?
Graded A-, with 4 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
88/100
waterverge.com Mayville, MI — Water Quality Report
Mayville's drinking water received a grade of A- (88 out of 100), indicating good water quality. The city's 1 water system serves approximately 950 residents using groundwater.
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.
The system has 17 violations on record, including 1 health-based violation. 4 remain unresolved.
What to know about Mayville's water
Mayville ranks #172 out of 520 cities in Michigan for water quality, placing it mid-range in the state.
Mayville 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, Mayville may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Mayville, MI water safe to drink?
Mayville's drinking water has significant quality concerns based on EPA testing data. With a grade of A- (88/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 950 residents using groundwater (wells).
Recent water quality updates for Mayville
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Mayville's water quality assessment. Grade: A- (88/100).
Contaminants: Lead and Copper Rule.
Contaminants: Consumer Confidence Rule.
Contaminants: Revised Total Coliform Rule.
Federal disaster declaration (FEMA DR-3225). Hurricane event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-774). Flood event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Mayville's water supply.
Well within EPA limits.
Violation history
Mayville's water system has 17 total violations on record, including 1 health-based violation. 4 remain unresolved. 2 violations were issued in the last 5 years.
Flood & environmental risk
Tuscola County has experienced 5 federally declared disasters since 1972. 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 Cass River.
Where does Mayville's water come from?
Mayville's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 950 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate. Nearby water bodies include Cass River (river).
What Mayville residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Mayville'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.
Mayville'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 ↓Violation summary
Violations & advisories
Top industrial polluters within 10 miles of Mayville
Industrial polluters nearby
Reported releases to surface water by facilities near Mayville, ranked by pounds discharged annually.
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
POET BIOREFINING-CARO LLC CARO, MI48723 | — | — | 9.8 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Flood & disaster history
Tuscola County has experienced 5 federally declared disasters since 1972. 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 (2024)
EPA action level: 15 ppb
See how Mayville compares by contaminant
Explore where Mayville ranks among all Michigan cities for specific contaminants.
Water source & infrastructure
Where Mayville's water comes from
Mayville'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 950 people through 1 water system.
Water bodies near Mayville
Mayville is located near 1 notable water body. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving Mayville
| System Name | PWSID | Population | Source |
|---|---|---|---|
| MAYVILLE, VILLAGE OF | MI0004180 | 950 | GW |
How Mayville compares
Full Michigan rankings →Mayville's score of 88/100 is above the average of 70/100 among major Michigan cities. It outscores 8 of 10 nearby cities.
Nearby cities
View Michigan rankings →About Mayville, MI
Wikipedia →Mayville is a village in Tuscola County, in the U.S. state of Michigan. The population was 922 at the 2020 census. The village is within Fremont Township along the boundary with Dayton Township.
Learn more about your water
Guides and resources related to Mayville's water quality findings.
Explore water quality across Tuscola
Frequently asked questions
Is Mayville, MI tap water safe to drink?
Mayville's water quality earned a grade of A- (88/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #172 out of 520 cities tested in Michigan.
What contaminants are in Mayville's water?
Lead was measured at 0.0 ppb (90th percentile). 17 violations are on record.
How is Mayville'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 Mayville?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Mayville's water come from?
Mayville's water is sourced from Groundwater. The city has 1 water system serving approximately 950 residents.
What health violations has Mayville's water system had?
Mayville has 1 health-based violation on record. The most recent violation was recorded in December 2021. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 4 violations remain unresolved.
Is Mayville's groundwater at risk of contamination?
Mayville 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 17 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 Mayville's water compare to other cities?
Mayville ranks #172 out of 520 cities in Michigan (better than 67% of state cities) and #3727 out of 15744 cities nationally (76th percentile). The grade of A- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Mayville's small water system affect quality?
Mayville's system serves approximately 950 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 17 violations on record.