States › Minnesota › Hennepin County

Hennepin County, MN Water Quality

Water quality data for 36 public water systems serving Hennepin County, Minnesota — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 36 water systems · 41 cities
✅
Excellent — All Systems Performing Well

Water quality across the county is outstanding with minimal violations and very low lead levels.

A

Hennepin County Earns a A

Hennepin County: 41 communities across 36 water systems. 100.0% have no open violations.

  • Median lead where detected: 2.00 ppb
  • 18 communities with a lead detection, 23 reporting none detected
  • 1 communities with PFAS above the federal limit
  • 1 with significant inspection deficiencies
  • 100.0% of communities have no open violations
2 ppb
Median Lead Level
County-wide, 90th percentile
36
Water Systems
Active CWS & NTNCWS
100%
Violation-Free
No active violations on record
How we grade counties: MyWaterIQ uses EPA SDWIS enforcement data — actual MCL violations and lead test results — not the aspirational MCLG targets used by some sites. A grade reflects real compliance history, not theoretical risk. Learn more →

Cities by Water Quality

⭐ Best Performing
  • Minneapolis
    2.00 ppb
    No federal limits exceeded on record
    A
  • Bloomington
    2.00 ppb
    No federal limits exceeded on record
    A
  • Maple Grove
    2.00 ppb
    No federal limits exceeded on record
    A
  • Eden Prairie
    Not detected
    No federal limits exceeded on record
    A
  • St. Louis Park
    4.00 ppb
    No federal limits exceeded on record
    A
⚠ Needs Attention
  • Brooklyn Park
    1.00 ppb
    PFAS above the limit at 1 of 5 sampling points
    C
  • Greenfield
    1.00 ppb
    Copper above the 1,300 ppb action level
    C
  • Spring Park
    8.00 ppb
    Copper above the 1,300 ppb action level
    B
  • Plymouth
    2.00 ppb
    Copper above the 1,300 ppb action level
    A
  • Minnetonka
    Not detected
    Copper above the 1,300 ppb action level
    A
County Lead Level — Median 2 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 2 ppb — 13.3% of the federal action level
Systems by Lead Level
Under 5 ppb
17
5 – 10 ppb
1
No Data
23

All Cities in Hennepin County

Minneapolis 2.00 ppb A
Bloomington 2.00 ppb A
Brooklyn Park 1.00 ppb C
Plymouth 2.00 ppb A
Maple Grove 2.00 ppb A
Eden Prairie Not detected A
Minnetonka Not detected A
Edina Not detected A
St. Louis Park 4.00 ppb A
Brooklyn Center Not detected A
Richfield Not detected A
Champlin Not detected A
Crystal Not detected A
Golden Valley Not detected A
New Hope 2.00 ppb A
Hopkins 1.00 ppb A
Robbinsdale 2.00 ppb A
Rogers Not detected B
Mound Not detected A
St. Anthony 1.00 ppb A
Shorewood Not detected A
Dayton Not detected B
Minnetrista Not detected A
Medina Not detected A
Wayzata Not detected A
Orono Not detected B
Osseo Not detected B
Excelsior 3.00 ppb B
St. Bonifacius Not detected B
Long Lake Not detected B
Maple Plain 1.00 ppb B
Spring Park 8.00 ppb B
Corcoran Not detected B
Tonka Bay 2.00 ppb B
Deephaven Not detected A
Loretto Not detected B
Greenfield 1.00 ppb C
Woodland Not detected A
Independence 1.00 ppb B
Greenwood 3.00 ppb B
Medicine Lake 2.00 ppb A
Showing 41 cities
No active violations Active violations

About Hennepin County Drinking Water

Hennepin County is served by 36 water systems covering 41 communities. No community here has an open violation on record.

Of the communities reporting lead results, 18 recorded a detection, with a median of 2.00 ppb — 13% of the federal action level. 23 reported none detected, which means below the laboratory limit rather than an absence of lead.

1 of 41 communities have PFAS above the limits EPA set in 2024, measured as a running annual average at each sampling point. State inspectors recorded significant deficiencies at 1 of them.

Frequently Asked Questions

Is Hennepin County tap water safe to drink?▼
No community in Hennepin County has an open violation on record. 1 of 41 have PFAS above the federal limit, which is the main open concern.
What is the lead level in Hennepin County?▼
Among communities with a detection the median is 2.00 ppb, 13% of the 15 ppb action level. 23 reported none detected and 0 reported no result.
How many water systems serve Hennepin County?▼
36 community water systems serve 41 communities here.
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