States › Michigan › Allegan County

Allegan County, MI Water Quality

Water quality data for 21 public water systems serving Allegan County, Michigan — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 21 water systems · 28 cities
✅
Excellent — All Systems Performing Well

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

A

Allegan County Earns a A

Allegan County: 28 communities across 21 water systems. 100.0% have no open violations.

  • Median lead where detected: 1.96 ppb
  • 14 communities with a lead detection, 10 reporting none detected
  • 0 communities with PFAS above the federal limit
  • 1 with significant inspection deficiencies
  • 100.0% of communities have no open violations
1.96 ppb
Median Lead Level
County-wide, 90th percentile
21
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
  • Wayland
    2.46 ppb
    No federal limits exceeded on record
    A
  • Otsego
    Not detected
    No federal limits exceeded on record
    A
  • Plainwell
    2.00 ppb
    No federal limits exceeded on record
    A
  • Fennville
    Not reported
    No federal limits exceeded on record
    B
  • Dorr
    1.24 ppb
    No federal limits exceeded on record
    B
⚠ Needs Attention
  • Douglas
    1.96 ppb
    Copper above the 1,300 ppb action level
    B
  • Saugatuck
    1.96 ppb
    Copper above the 1,300 ppb action level
    B
  • Saugatuck
    1.96 ppb
    Copper above the 1,300 ppb action level
    B
  • Fillmore
    2.00 ppb
    1 significant inspection deficiency
    B
  • Lee
    Not detected
    3 health-based violations since 2015
    B
County Lead Level — Median 1.96 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 1.96 ppb — 13.1% of the federal action level
Systems by Lead Level
Under 5 ppb
13
5 – 10 ppb
1
No Data
14

All Cities in Allegan County

Allegan 1.50 ppb A
Wayland 2.46 ppb A
Otsego Not detected A
Plainwell 2.00 ppb A
Fennville Not reported B
Dorr 1.24 ppb B
Douglas 1.96 ppb B
Leighton Not reported B
Gun Plain Not detected B
Otsego Not detected A
Saugatuck 1.96 ppb B
Allegan 1.50 ppb A
Heath 1.62 ppb B
Saugatuck 1.96 ppb B
Salem Not detected B
Hopkins Not detected B
Wayland 4.00 ppb B
Martin Not detected B
Manlius Not reported B
Laketown Not detected B
Fillmore 2.00 ppb B
Lee Not detected B
Monterey Not detected B
Trowbridge 3.96 ppb B
Cheshire Not detected B
Ganges 1.47 ppb B
Casco 9.20 ppb B
Clyde Not reported B
Showing 28 cities
No active violations Active violations

About Allegan County Drinking Water

Allegan County is served by 21 water systems covering 28 communities. No community here has an open violation on record.

Of the communities reporting lead results, 14 recorded a detection, with a median of 1.96 ppb — 13% of the federal action level. 10 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 1 of them.

Frequently Asked Questions

Is Allegan County tap water safe to drink?▼
No community in Allegan County has an open violation on record. No community has PFAS above the federal limit on record.
What is the lead level in Allegan County?▼
Among communities with a detection the median is 1.96 ppb, 13% of the 15 ppb action level. 10 reported none detected and 4 reported no result.
How many water systems serve Allegan County?▼
21 community water systems serve 28 communities here.
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