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Madison County, TN Water Quality

Water quality data for 2 public water systems serving Madison County, Tennessee — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 2 water systems · 5 cities
⚠️
Caution Advised — Some Systems Need Attention

Some systems have elevated lead levels or active violations. Check your specific city below.

C

Madison County Earns a C

Madison County: 5 communities across 2 water systems. 100.0% have no open violations.

  • Median lead where detected: 0.50 ppb
  • 5 communities with a lead detection, 0 reporting none detected
  • 4 communities with PFAS above the federal limit
  • 0 with significant inspection deficiencies
  • 100.0% of communities have no open violations
0.5 ppb
Median Lead Level
County-wide, 90th percentile
2
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
  • Mercer
    0.70 ppb
    No federal limits exceeded on record
    B
  • Jackson
    0.50 ppb
    PFAS above the limit at 1 of 2 sampling points
    C
  • Three Way
    0.50 ppb
    PFAS above the limit at 1 of 2 sampling points
    C
  • Pinson
    0.50 ppb
    PFAS above the limit at 1 of 2 sampling points
    C
  • Beech Bluff
    0.50 ppb
    PFAS above the limit at 1 of 2 sampling points
    C
⚠ Needs Attention
  • Jackson
    0.50 ppb
    PFAS above the limit at 1 of 2 sampling points
    C
  • Three Way
    0.50 ppb
    PFAS above the limit at 1 of 2 sampling points
    C
  • Pinson
    0.50 ppb
    PFAS above the limit at 1 of 2 sampling points
    C
  • Beech Bluff
    0.50 ppb
    PFAS above the limit at 1 of 2 sampling points
    C
  • Mercer
    0.70 ppb
    No federal limits exceeded on record
    B
County Lead Level — Median 0.5 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 0.5 ppb — 3.3% of the federal action level
Systems by Lead Level
Under 5 ppb
5

All Cities in Madison County

Jackson 0.50 ppb C
Three Way 0.50 ppb C
Pinson 0.50 ppb C
Beech Bluff 0.50 ppb C
Mercer 0.70 ppb B
Showing 5 cities
No active violations Active violations

About Madison County Drinking Water

Madison County is served by 2 water systems covering 5 communities. No community here has an open violation on record.

Of the communities reporting lead results, 5 recorded a detection, with a median of 0.50 ppb — 3% of the federal action level. 0 reported none detected, which means below the laboratory limit rather than an absence of lead.

4 of 5 communities have PFAS above the limits EPA set in 2024, measured as a running annual average at each sampling point. State inspectors recorded no significant deficiencies.

Frequently Asked Questions

Is Madison County tap water safe to drink?▼
No community in Madison County has an open violation on record. 4 of 5 have PFAS above the federal limit, which is the main open concern.
What is the lead level in Madison County?▼
Among communities with a detection the median is 0.50 ppb, 3% of the 15 ppb action level. 0 reported none detected and 0 reported no result.
How many water systems serve Madison County?▼
2 community water systems serve 5 communities here.
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