MACKINAC ISLAND
PWS ID: MI0003970 · MACKINAC ISLAND, Michigan 49757
MACKINAC ISLAND serves 583 people in MACKINAC ISLAND, Michigan using Surface Water water sources. It has 19 recorded EPA violations, including 0 health-based violations. No PFAS contamination was detected in UCMR5 testing.
Water Quality Snapshot: MACKINAC ISLAND
MACKINAC ISLAND is a local-owned community water system that delivers drinking water to 583 residents in MACKINAC ISLAND, Michigan (Mackinac County) through 662 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 19 total violations for this system , of which 0 (0%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 10 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.
The most frequently cited contaminant at this system is Consumer Confidence Rule, recorded in 6 violations (Other). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.
Across Michigan, EPA tracks 10,959 public water systems serving 9,098,093 people, with 255,201 cumulative violations and 31,467 health-based violations on record. About 86% of systems in the state carry at least one violation, and state-wide the average per system is 23.3 violations. MACKINAC ISLAND's 19 violations sit below the Michigan average. Statewide, 87 of 318 UCMR5-tested systems have reported PFAS detections (27.4%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 662
- County
- Mackinac
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 10
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Consumer Confidence Rule | Other | 6 | 2023 |
| TTHM | MR | 3 | 2020 |
| Total Haloacetic Acids (HAA5) | MR | 3 | 2020 |
| Coliform (TCR) | MR | 3 | 1991 |
| Nitrate | MR | 1 | 1994 |
Verify This Water System
The figures above are aggregated from EPA's public databases. To verify the underlying records — or to file a complaint, request a Consumer Confidence Report, or check current monitoring status — go directly to the federal and state regulators that enforce the Safe Drinking Water Act for MACKINAC ISLAND.
EPA SDWIS — Federal Reports
EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:
View PWS ID MI0003970 on SDWISSource: EPA SDWIS Federal Reports Search
Michigan Drinking Water Authority
Michigan EGLE — Drinking Water and Environmental Health Division is the primacy agency that licenses and inspects MACKINAC ISLAND under EPA-delegated authority.
Open MI regulator portalSource: Michigan EGLE — Drinking Water and Environmental Health Division
Violation Timeline
Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.
| Year (latest) | Contaminant | Category | Count | EPA Record |
|---|---|---|---|---|
| 2023 | Consumer Confidence Rule | Other | 6 | SDWIS / MI0003970 / 7000 |
| 2020 | TTHM | MR | 3 | SDWIS / MI0003970 / 2950 |
| 2020 | Total Haloacetic Acids (HAA5) | MR | 3 | SDWIS / MI0003970 / 2456 |
| 1994 | Nitrate | MR | 1 | SDWIS / MI0003970 / 1040 |
| 1991 | Coliform (TCR) | MR | 3 | SDWIS / MI0003970 / 3100 |
How MACKINAC ISLAND Compares
Cross-reference this system's record against state averages and the federal MCL framework for context.
| Metric | MACKINAC ISLAND | Michigan avg | Federal benchmark |
|---|---|---|---|
| Total violations | 19 | 23.3 | SDWA compliance — any non-zero count is a recorded breach |
| Health-based violations | 0 | 2.9 | Indicates a contaminant exceeded a federal MCL |
| PFAS detection | None | 27.4% | EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt |
| Population served | 583 | 830 | Sizing context for compliance burden |
Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 10,959 regulated public water systems in Michigan.
Federal MCL reference — Safe Drinking Water Act thresholds ▼
| Contaminant | Federal MCL / Action Level | Note |
|---|---|---|
| Lead | 0 mg/L (Action Level: 0.015 mg/L) | Lead and Copper Rule treatment technique |
| Arsenic | 0.010 mg/L (10 ppb) | Health-based MCL since 2006 |
| Total Coliform | Treatment technique (RTCR) | Indicator organism, monitoring trigger |
| PFOA / PFOS (PFAS) | 4.0 ppt each (final 2024 rule) | Compliance deadline 2029 |
| Nitrate (as N) | 10 mg/L | Acute health risk for infants |
Frequently Asked Questions
Is MACKINAC ISLAND water safe to drink? ▼
How many people does MACKINAC ISLAND serve? ▼
What type of violations does MACKINAC ISLAND have? ▼
Has PFAS been detected in MACKINAC ISLAND water? ▼
What water source does MACKINAC ISLAND use? ▼
Where does this data come from? ▼
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Related Data for Michigan
Read our methodology — how this data is sourced, computed, and verified.