States › Michigan › Calhoun County

Calhoun County, MI Water Quality

Water quality data for 12 public water systems serving Calhoun County, Michigan — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 12 water systems · 20 cities
✅
Generally Safe — Most Systems Performing Well

The majority of water systems have no active violations and lead levels well below the federal action level.

B

Calhoun County Earns a B

Calhoun County: 20 communities across 12 water systems. 75.0% have no open violations.

  • Median lead where detected: 2.00 ppb
  • 12 communities with a lead detection, 6 reporting none detected
  • 0 communities with PFAS above the federal limit
  • 2 with significant inspection deficiencies
  • 75.0% of communities have no open violations
2 ppb
Median Lead Level
County-wide, 90th percentile
12
Water Systems
Active CWS & NTNCWS
75%
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
  • Bedford charter
    Not detected
    No federal limits exceeded on record
    B
  • Tekonsha
    Not detected
    No federal limits exceeded on record
    B
  • Burlington
    Not detected
    No federal limits exceeded on record
    B
  • Newton
    2.13 ppb
    1 health-based violation since 2015
    B
  • Marshall
    2.00 ppb
    Copper above the 1,300 ppb action level
    A
⚠ Needs Attention
  • Albion
    1.00 ppb
    Copper above the 1,300 ppb action level
    D
  • Sheridan
    1.00 ppb
    Copper above the 1,300 ppb action level
    D
  • Albion
    1.00 ppb
    Copper above the 1,300 ppb action level
    D
  • Homer
    Not reported
    1 violation currently open
    C
  • Convis
    Not detected
    1 violation currently open
    C
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
12
No Data
8

All Cities in Calhoun County

Battle Creek 2.00 ppb C
Albion 1.00 ppb D
Marshall 2.00 ppb A
Springfield 2.00 ppb B
Pennfield charter 2.00 ppb C
Bedford charter Not detected B
Homer Not reported C
Marshall 2.00 ppb A
Athens Not reported B
Emmett charter Not detected C
Brownlee Park Not detected C
Tekonsha Not detected B
Leroy 2.00 ppb C
Marengo 2.00 ppb A
Fredonia 2.00 ppb A
Sheridan 1.00 ppb D
Newton 2.13 ppb B
Burlington Not detected B
Convis Not detected C
Albion 1.00 ppb D
Showing 20 cities
No active violations Active violations

About Calhoun County Drinking Water

Calhoun County is served by 12 water systems covering 20 communities. 75% have no open violations.

Of the communities reporting lead results, 12 recorded a detection, with a median of 2.00 ppb — 13% of the federal action level. 6 reported none detected, which means below the laboratory limit rather than an absence of lead.

No community here has PFAS above the federal limit on record. State inspectors recorded significant deficiencies at 2 of them.

Frequently Asked Questions

Is Calhoun County tap water safe to drink?▼
75% of communities have no open violation. No community has PFAS above the federal limit on record.
What is the lead level in Calhoun County?▼
Among communities with a detection the median is 2.00 ppb, 13% of the 15 ppb action level. 6 reported none detected and 2 reported no result.
How many water systems serve Calhoun County?▼
12 community water systems serve 20 communities here.
← Back to Michigan water quality overview