States › Michigan › Bay County

Bay County, MI Water Quality

Water quality data for 10 public water systems serving Bay County, Michigan — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 10 water systems · 14 cities
✅
Excellent — All Systems Performing Well

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

A

Bay County Earns a A

Bay County: 14 communities across 10 water systems. 100.0% have no open violations.

  • Median lead where detected: 2.24 ppb
  • 8 communities with a lead detection, 6 reporting none detected
  • 0 communities with PFAS above the federal limit
  • 0 with significant inspection deficiencies
  • 100.0% of communities have no open violations
2.24 ppb
Median Lead Level
County-wide, 90th percentile
10
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
  • Hampton charter
    Not detected
    No federal limits exceeded on record
    A
  • Monitor charter
    Not detected
    No federal limits exceeded on record
    B
  • Frankenlust
    Not detected
    No federal limits exceeded on record
    B
  • Williams charter
    2.48 ppb
    No federal limits exceeded on record
    A
  • Auburn
    2.00 ppb
    No federal limits exceeded on record
    B
⚠ Needs Attention
  • Bay City
    10.00 ppb
    1 health-based violation since 2015
    B
  • Bangor charter
    10.00 ppb
    1 health-based violation since 2015
    B
  • Pinconning
    1.30 ppb
    3 health-based violations since 2015
    B
  • Pinconning
    1.30 ppb
    3 health-based violations since 2015
    B
  • Fraser
    5.00 ppb
    Lead at 5.00 ppb, above a third of the action level
    B
County Lead Level — Median 2.24 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 2.24 ppb — 14.9% of the federal action level
Systems by Lead Level
Under 5 ppb
5
5 – 10 ppb
1
10 – 15 ppb
2
No Data
6

All Cities in Bay County

Bay City 10.00 ppb B
Bangor charter 10.00 ppb B
Hampton charter Not detected A
Monitor charter Not detected B
Essexville Not detected A
Frankenlust Not detected B
Williams charter 2.48 ppb A
Auburn 2.00 ppb B
Pinconning 1.30 ppb B
Kawkawlin Not detected B
Portsmouth charter 1.30 ppb A
Fraser 5.00 ppb B
Beaver Not detected B
Pinconning 1.30 ppb B
Showing 14 cities
No active violations Active violations

About Bay County Drinking Water

Bay County is served by 10 water systems covering 14 communities. No community here has an open violation on record.

Of the communities reporting lead results, 8 recorded a detection, with a median of 2.24 ppb — 15% 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 no significant deficiencies.

Frequently Asked Questions

Is Bay County tap water safe to drink?▼
No community in Bay County has an open violation on record. No community has PFAS above the federal limit on record.
What is the lead level in Bay County?▼
Among communities with a detection the median is 2.24 ppb, 15% of the 15 ppb action level. 6 reported none detected and 0 reported no result.
How many water systems serve Bay County?▼
10 community water systems serve 14 communities here.
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