PlainWater
Counties → Michigan

Shiawassee County, Michigan

Water Systems
142
Population Served
45,777
Total Violations
4,115
547 health-based
PFAS Detected
2
of 2 tested

Violation Analysis

95.8%
Systems with Violations
29.0
Avg Violations per System
13.3%
Health-Based Violations

Water Source Types

GW
49 systems (35%)
SW
1 system (1%)

PFAS Contamination

2
Systems Tested
2
PFAS Detected
100.0%
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

Shiawassee Michigan water systems by violation status, EPA SDWIS records.

No violations on record (0) One or more violations (50)

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
Owosso, City Of 16,353 24 Clean
Durand, City Of 3,446 32 Clean
Perry, City Of 2,065 4 -
Corunna, City Of 2,028 8 -
Mdot - Woodbury Rest Area 1,200 15 -
Speedway #8387 1,001 2 -
Leisure Lake Snack Bar 1,000 16 -
Bancroft, Village Of 616 74 -
New Lothrop, Village Of 610 31 -
Byron, Village Of 581 45 -
Laingsburg Middle School 550 95 -
Laingsburg Elementary School 550 78 -
Woods and Fields Communities East 528 30 -
St. Mary's Catholic Church (Hall) 500 3 -
Reed-Raymond VFW Post #2272 500 14 -
St. Mary's Catholic Church 500 4 -
Countryside Village 490 6 -
Leisure Lake Condo Assn. 425 22 -
Redeemer Lutheran Church-Owosso 412 12 -
Morrice Elementary 405 25 -
Holiday Shores RV MHP Resort LLC 400 24 -
Gracepointe Wesleyan Church 400 10 -
Laingsburg High School 392 30 -
Lakeview Estates 380 47 -
Sresd College & Career Readiness Center 300 62 -
Morrice High School 300 131 -
Edgewood Gardens 300 19 -
Shiawassee Harvest Ministries 300 1 -
Eagles Cove 300 15 -
Morrice Meadows 258 24 -
Northwoods Community 238 64 -
First Church of the Nazarene - Owosso 210 23 -
Bj's Fine Foods 200 8 -
Graham Community Church Shaftsburg 200 78 -
Riverwood Crossing Mall #1 200 51 -
Riverwood Crossing Plaza 200 122 -
Big Boy Restaurant Affiliates, LLC 200 71 -
Sage Market 200 11 -
Campgrounds R US 200 10 -
Owosso Speedway 200 16 -
Durand Church of the Nazarene 188 3 -
Woods and Fields Communities West 185 17 -
Walnut Hills Family Campground 167 14 -
Walnut Hills Family Campground 164 16 -
Walnut Hills Family Campground Wl003 160 16 -
First Church of God - Owosso 150 35 -
Laingsburg Shopping Center 150 5 -
Health Park Building 300 150 6 -
Health Park Building 100 150 8 -
Ovid Medical Care 150 9 -

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 Shiawassee County? ▼
Shiawassee County has 4,115 total drinking water violations across 142 water systems, of which 547 are health-based violations. 95.8% of systems have at least one violation.
How many people get water from Shiawassee County systems? ▼
Water systems in Shiawassee County serve approximately 45,777 people through 142 public water systems.
Has PFAS been detected in Shiawassee County water? ▼
Of 2 water systems tested for PFAS in Shiawassee County, 2 had PFAS detected (100.0% detection rate).
What types of water sources supply Shiawassee County? ▼
Water systems in Shiawassee County use GW (49 systems), SW (1 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. 13.3% of Shiawassee 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.