PlainWater
Counties → Michigan

St. Clair County, Michigan

Water Systems
104
Population Served
131,964
Total Violations
2,483
164 health-based
PFAS Detected
0
of 12 tested

Violation Analysis

92.3%
Systems with Violations
23.9
Avg Violations per System
6.6%
Health-Based Violations

Water Source Types

GW
34 systems (33%)
SW
16 systems (15%)

PFAS Contamination

12
Systems Tested
0
PFAS Detected
0.0%
Detection Rate

PFAS (per- and polyfluoroalkyl substances) are persistent chemicals found in drinking water. The EPA has set enforceable limits for several PFAS compounds under UCMR5 monitoring.

Compliance Snapshot

St. Clair Michigan water systems by violation status, EPA SDWIS records.

No violations on record (2) One or more violations (48)

Violation history is cumulative, many flagged systems have already returned to compliance. Detail pages show per-system context.

Water Systems

System Name Population Violations PFAS
Port Huron, City Of 33,800 9 Clean
Fort Gratiot Township 11,616 22 Clean
Port Huron Township 10,654 19 Clean
Marysville, City Of 9,959 234 Clean
Clay Township 9,866 14 Clean
Ira Township 6,510 5 Clean
St. Clair Water and Sewer Authority 5,847 0 Clean
St. Clair, City Of 5,485 25 Clean
Kimball Township 5,170 72 Clean
Marine City 4,652 16 Clean
Algonac, City Of 4,110 134 Clean
St. Clair Township 3,270 14 -
Cottrellville Township 3,200 14 -
Burtchville Township 2,900 24 -
Clyde Township 2,400 5 Clean
Yale, City Of 1,900 43 -
Capac, Village Of 1,775 174 -
Memphis, City Of 1,084 18 -
Pinewood on the Lake MHP 950 15 -
Thousand Trails Campground 904 36 -
Love's Travel Center - St Clair 500 15 -
St. Paul's Lutheran Church - Casco 306 9 -
John Farrell Elementary 300 128 -
Sunrise Conv Store #29 300 16 -
Avoca Elementary School 200 132 -
The Old Club 200 9 -
Camp Hawthorn Hollow 150 7 -
Columbus Bible Church 150 4 -
Perch Point Conservation Club 130 14 -
Sunrise MHP 120 11 -
Goodells Co Park - North 120 9 -
Dorsey House 100 27 -
Goodells Co Park - Svc & Media 100 8 -
Goodells Park - East 100 10 -
Goodells Co Park - Artesian Well 100 11 -
Golden Hawk Golf Course 100 14 -
Solitude Links Golf 100 6 -
Wadhams Oil 100 12 -
Camp Hawthorne Hollow Hand Pump 100 11 -
St. John the Evangelist 100 1 -
Holly Meadows Golf Course 100 4 -
Emmett KOA 100 9 -
Dunrentin Heights Subdivision 81 88 -
Brockway Township Hall 80 27 -
Pine River Nature Center 75 0 -
Scooters Pub 65 60 -
Gleason-Butler-Sharpe VFW 60 10 -
Mdot - Richmond R909 (R910 Closed) 50 11 -
Grump's 50 47 -
Our Lady of Mt. Carmel 50 8 -

Other Counties in Michigan

Wayne County
55 systems · 1,774,820 served · 1,141 violations
Oakland County
742 systems · 1,147,613 served · 21,952 violations
Macomb County
93 systems · 830,956 served · 2,728 violations
Kent County
407 systems · 616,574 served · 4,140 violations
Washtenaw County
264 systems · 420,450 served · 6,092 violations
Genesee County
397 systems · 335,433 served · 13,553 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in St. Clair County? ▼
St. Clair County has 2,483 total drinking water violations across 104 water systems, of which 164 are health-based violations. 92.3% of systems have at least one violation.
How many people get water from St. Clair County systems? ▼
Water systems in St. Clair County serve approximately 131,964 people through 104 public water systems.
Has PFAS been detected in St. Clair County water? ▼
Of 12 water systems tested for PFAS in St. Clair County, 0 had PFAS detected (0.0% detection rate).
What types of water sources supply St. Clair County? ▼
Water systems in St. Clair County use GW (34 systems), SW (16 systems) as their primary water sources.
Are health-based violations serious? ▼
Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 6.6% of St. Clair County's violations are health-based. Not all violations indicate immediate health risk, but they require corrective action.
Data Sources & Methodology

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). PFAS testing data from the UCMR5 monitoring program. SDWIS tracks all public water systems regulated under the Safe Drinking Water Act.

Violations are categorized as health-based (Maximum Contaminant Level exceedances, treatment technique failures) or monitoring/reporting violations. Not all violations indicate an immediate health risk.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.