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Gibson County, TN Water Quality

Water quality data for 8 public water systems serving Gibson County, Tennessee — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 8 water systems · 10 cities
✅
Excellent — All Systems Performing Well

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

A

Gibson County Earns a A

Gibson County: 10 communities across 8 water systems. 100.0% have no open violations.

  • Median lead where detected: 0.70 ppb
  • 10 communities with a lead detection, 0 reporting none detected
  • 1 communities with PFAS above the federal limit
  • 1 with significant inspection deficiencies
  • 100.0% of communities have no open violations
0.7 ppb
Median Lead Level
County-wide, 90th percentile
8
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
  • Milan
    2.10 ppb
    No federal limits exceeded on record
    A
  • Humboldt
    3.80 ppb
    No federal limits exceeded on record
    A
  • Kenton
    0.90 ppb
    No federal limits exceeded on record
    B
  • Gibson
    0.65 ppb
    No federal limits exceeded on record
    B
  • Trenton
    0.70 ppb
    Copper above the 1,300 ppb action level
    A
⚠ Needs Attention
  • Medina
    0.50 ppb
    PFAS above the limit at 1 of 2 sampling points
    C
  • Trenton
    0.70 ppb
    Copper above the 1,300 ppb action level
    A
  • Dyer
    0.30 ppb
    Copper above the 1,300 ppb action level
    B
  • Rutherford
    2.30 ppb
    1 significant inspection deficiency
    B
  • Bradford
    0.70 ppb
    Copper above the 1,300 ppb action level
    A
County Lead Level — Median 0.7 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 0.7 ppb — 4.7% of the federal action level
Systems by Lead Level
Under 5 ppb
10

All Cities in Gibson County

Milan 2.10 ppb A
Humboldt 3.80 ppb A
Medina 0.50 ppb C
Trenton 0.70 ppb A
Dyer 0.30 ppb B
Kenton 0.90 ppb B
Rutherford 2.30 ppb B
Bradford 0.70 ppb A
Yorkville 0.30 ppb B
Gibson 0.65 ppb B
Showing 10 cities
No active violations Active violations

About Gibson County Drinking Water

Gibson County is served by 8 water systems covering 10 communities. No community here has an open violation on record.

Of the communities reporting lead results, 10 recorded a detection, with a median of 0.70 ppb — 5% of the federal action level. 0 reported none detected, which means below the laboratory limit rather than an absence of lead.

1 of 10 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 Gibson County tap water safe to drink?▼
No community in Gibson County has an open violation on record. 1 of 10 have PFAS above the federal limit, which is the main open concern.
What is the lead level in Gibson County?▼
Among communities with a detection the median is 0.70 ppb, 5% of the 15 ppb action level. 0 reported none detected and 0 reported no result.
How many water systems serve Gibson County?▼
8 community water systems serve 10 communities here.
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