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Counties → Minnesota

Hennepin County, Minnesota

Water Systems
202
Population Served
1,273,140
Total Violations
1,534
995 health-based
PFAS Detected
23
of 25 tested

Violation Analysis

61.4%
Systems with Violations
7.6
Avg Violations per System
64.9%
Health-Based Violations

Water Source Types

GW
45 systems (22%)
SW
5 systems (2%)

PFAS Contamination

25
Systems Tested
23
PFAS Detected
92.0%
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

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

No violations on record (13) One or more violations (37)

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
Minneapolis 425,300 8 Detected
Bloomington 91,300 15 Detected
Brooklyn Park 89,995 21 Detected
Plymouth 81,026 3 Detected
Maple Grove 75,000 1 Detected
Eden Prairie 63,726 8 Detected
Minnetonka 54,474 0 Detected
Edina 53,494 4 Detected
Saint Louis Park 50,010 14 Detected
Richfield 36,899 3 Detected
Brooklyn Center 33,782 0 Detected
Champlin 24,007 6 Clean
Golden Valley 23,000 4 Detected
Crystal 22,937 3 Detected
New Hope 20,963 6 Detected
Hopkins 19,462 6 Detected
Robbinsdale 14,646 0 Detected
Rogers 14,430 4 Detected
Saint Anthony Village 9,500 0 Detected
Mound 9,447 33 Clean
Minnetrista 5,888 22 Clean
Dayton 4,930 6 -
Wayzata 4,592 4 Detected
Medina 4,205 33 Clean
Shorewood 3,890 8 Detected
Orono 3,062 5 -
Corcoran 2,964 0 -
Osseo 2,650 32 -
Excelsior 2,483 2 -
Saint Bonifacius 2,374 6 -
Maple Plain 2,174 14 -
Spring Park 1,743 13 -
Long Lake 1,729 29 -
Tonka Bay 1,442 6 -
Riverview Apartment Partnership 700 21 -
Mpls. Ind. Apostolic Lutheran Chur 700 0 -
Loretto 637 1 -
General Mills Operations, Inc.- JFBTC 600 0 -
Minnetonka Beach 547 6 -
Sun Valley Mobile Home Park 500 8 -
TRPD-Elm Creek Park, Hayden Lake Group 500 0 -
TRPD-Elm Creek Park, Rush Creek Group 500 0 -
TRPD-Elm Creek Park, Creative Play Are 500 0 -
Rush Creek Golf Academy 500 0 -
Maple Hill Estates 490 6 -
YMCA Camp Christmas Tree #1018 350 3 -
Danfoss Power Solutions II LLC 320 0 -
Greenfield 313 16 Clean
Lyndale Lutheran Church 300 21 -
Grace Fellowship Church 300 0 -

Other Counties in Minnesota

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
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 Hennepin County? ▼
Hennepin County has 1,534 total drinking water violations across 202 water systems, of which 995 are health-based violations. 61.4% of systems have at least one violation.
How many people get water from Hennepin County systems? ▼
Water systems in Hennepin County serve approximately 1,273,140 people through 202 public water systems.
Has PFAS been detected in Hennepin County water? ▼
Of 25 water systems tested for PFAS in Hennepin County, 23 had PFAS detected (92.0% detection rate).
What types of water sources supply Hennepin County? ▼
Water systems in Hennepin County use GW (45 systems), SW (5 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. 64.9% of Hennepin 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.