PlainWater
Counties → Minnesota

St. Louis County, Minnesota

Water Systems
364
Population Served
178,965
Total Violations
3,967
2,378 health-based
PFAS Detected
1
of 9 tested

Violation Analysis

50.5%
Systems with Violations
10.9
Avg Violations per System
59.9%
Health-Based Violations

Water Source Types

GW
35 systems (10%)
SW
15 systems (4%)

PFAS Contamination

9
Systems Tested
1
PFAS Detected
11.1%
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. Louis Minnesota water systems by violation status, EPA SDWIS records.

No violations on record (15) One or more violations (35)

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
Duluth 86,859 11 Clean
Hibbing 16,028 31 Clean
Virginia 8,361 1 Clean
Hermantown 7,215 0 Clean
Chisholm 4,940 3 Clean
Eveleth 3,770 45 Detected
Ely 3,258 21 Clean
Proctor 3,099 8 -
Mountain Iron 2,880 16 -
Hoyt Lakes 2,020 13 -
Gilbert 1,829 10 -
Aurora 1,764 14 -
White Township 1,559 9 -
Babbitt 1,379 8 -
U.S. Steel-Minntac 1,250 20 -
Rice Lake 1,085 3 -
Buhl 1,000 28 -
Biwabik 975 13 -
McCarthy Beach State Park 900 0 -
The Y Store 800 7 -
Cherry School 677 16 -
North Woods School, ISD No. 2142 650 8 -
Cook 574 21 -
Fayal Township 565 10 -
South Ridge School 525 17 -
Floodwood 501 31 Clean
Cotton Super America 500 0 -
Breitung 446 13 -
Tower 426 38 -
Anchor Lake Travel Info Center MNDOT 415 0 -
Chalstrom's Bait and Tackle 400 0 -
Townline Short Stop 400 12 -
Voyageur's Lutheran Ministry - Camp Verm 400 0 -
Keetac 400 0 -
Twig Mercantile 350 0 -
YMCA Camp du Nord 350 46 -
Lakewood Elementary School, ISD No. 709 305 0 -
Jim's Ash Trail Store 300 7 -
Independent Apostolic Lutheran Church 300 0 -
Beaver River Farm Wedding & Event Center 300 0 -
Red Pine Campground 273 0 -
Old School Lives, Inc. 260 0 -
Burntside Lodge 254 18 -
North Shore Community School 250 4 -
Holiday Stationstore No. 409 250 48 -
St. Raphael's Church 250 0 -
Orr 249 9 -
Pine Acres Resort & Campground 225 0 -
Pike Lake School, ISD No. 704 220 25 -
Northeast Regional Correction Center 210 22 -

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
Washington County
195 systems · 259,368 served · 1,652 violations
Stearns County
214 systems · 167,300 served · 2,315 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in St. Louis County? ▼
St. Louis County has 3,967 total drinking water violations across 364 water systems, of which 2,378 are health-based violations. 50.5% of systems have at least one violation.
How many people get water from St. Louis County systems? ▼
Water systems in St. Louis County serve approximately 178,965 people through 364 public water systems.
Has PFAS been detected in St. Louis County water? ▼
Of 9 water systems tested for PFAS in St. Louis County, 1 had PFAS detected (11.1% detection rate).
What types of water sources supply St. Louis County? ▼
Water systems in St. Louis County use GW (35 systems), SW (15 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. 59.9% of St. Louis 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.