PlainWater
Counties → Minnesota

Washington County, Minnesota

Water Systems
195
Population Served
259,368
Total Violations
1,652
1,091 health-based
PFAS Detected
11
of 12 tested

Violation Analysis

56.9%
Systems with Violations
8.5
Avg Violations per System
66.0%
Health-Based Violations

Water Source Types

GW
50 systems (26%)

PFAS Contamination

12
Systems Tested
11
PFAS Detected
91.7%
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

Washington Minnesota water systems by violation status, EPA SDWIS records.

No violations on record (12) One or more violations (38)

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
Woodbury 82,643 17 Detected
Cottage Grove 39,712 3 Detected
Oakdale 28,674 10 Detected
Stillwater 19,462 12 Detected
Hugo 12,047 0 Detected
Forest Lake 11,800 21 Clean
Lake Elmo 10,978 73 Detected
Mahtomedi 8,134 12 Detected
Saint Paul Park 5,427 3 Detected
Oak Park Heights 4,776 16 Detected
Newport 4,000 13 Detected
Lakeland Municipal Water 3,500 3 Detected
Bayport 2,700 30 -
Cimarron Park 2,400 8 -
St. Croix Travel Information Cntr. MNDOT 1,604 51 -
Birchwood 864 35 -
Shepherd of the Valley Lutheran Church 850 2 -
Green Acres Recreation 800 7 -
MN Correctional Facility - Stillwater 781 18 -
3M Cottage Grove 740 33 -
Willernie 525 32 -
Lucy Winton Bell Athletic Field 500 0 -
Scandia Elementary School 425 6 -
Camp Galilee 400 22 -
Cottage Grove United Church of Christ 380 12 -
Afton Alps 350 0 -
Woodlund Mobile Home Park 330 9 -
Hugo Estates 300 18 -
Brookside Management Company LLC 300 7 -
Disabled Veterans Rest Camp Assn. 300 0 -
Applewood Hills Golf Course 300 14 -
River Valley Christian Church 300 7 -
Church of Jesus Christ Latter-Day Saints 300 0 -
Hidden Pines Ranch 300 7 -
Selma's Ice Cream Parlour 250 7 -
Keystone Wedding & Events 250 0 -
Oneka Ridge Golf 250 0 -
The Madison 250 11 -
White Bear Yacht Club - Main Club House 225 10 -
New Life Evangelical Church 225 24 -
Hosanna Lutheran Church 205 0 -
Oasis Cafe 200 7 -
Meister's Bar & Grill 200 0 -
Golden Acres Park 200 7 -
Memorial Lutheran Church 200 21 -
Hitching Post Motel 200 0 -
Woodbury Lutheran - Oakhill Campus 200 14 -
Camp Lakamaga 200 75 -
River Oaks Municipal Golf Course 200 0 -
Outing Lodge at Pine Point 200 0 -

Other Counties in Minnesota

Hennepin County
202 systems · 1,273,140 served · 1,534 violations
Ramsey County
43 systems · 579,780 served · 369 violations
Dakota County
135 systems · 391,434 served · 1,282 violations
Anoka County
245 systems · 328,280 served · 2,022 violations
St. Louis County
364 systems · 178,965 served · 3,967 violations
Stearns County
214 systems · 167,300 served · 2,315 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Washington County? ▼
Washington County has 1,652 total drinking water violations across 195 water systems, of which 1,091 are health-based violations. 56.9% of systems have at least one violation.
How many people get water from Washington County systems? ▼
Water systems in Washington County serve approximately 259,368 people through 195 public water systems.
Has PFAS been detected in Washington County water? ▼
Of 12 water systems tested for PFAS in Washington County, 11 had PFAS detected (91.7% detection rate).
What types of water sources supply Washington County? ▼
Water systems in Washington County use GW (50 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. 66.0% of Washington 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.