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Lauderdale County, AL Water Quality

Water quality data for 4 public water systems serving Lauderdale County, Alabama — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 4 water systems · 7 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

Lauderdale County Earns a B

Lauderdale County: 7 communities across 4 water systems. 100.0% have no open violations.

  • Median lead where detected: 3.40 ppb
  • 7 communities with a lead detection, 0 reporting none detected
  • 4 communities with PFAS above the federal limit
  • 1 with significant inspection deficiencies
  • 100.0% of communities have no open violations
3.4 ppb
Median Lead Level
County-wide, 90th percentile
4
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
  • Anderson
    0.64 ppb
    No federal limits exceeded on record
    A
  • Rogersville
    1.00 ppb
    Copper above the 1,300 ppb action level
    B
  • Lexington
    1.00 ppb
    1 significant inspection deficiency
    B
  • Florence
    3.40 ppb
    PFAS above the limit at 1 of 3 sampling points
    C
  • Underwood-Petersville
    3.40 ppb
    PFAS above the limit at 1 of 3 sampling points
    C
⚠ Needs Attention
  • Florence
    3.40 ppb
    PFAS above the limit at 1 of 3 sampling points
    C
  • Underwood-Petersville
    3.40 ppb
    PFAS above the limit at 1 of 3 sampling points
    C
  • Killen
    3.40 ppb
    PFAS above the limit at 1 of 3 sampling points
    C
  • St. Florian
    3.40 ppb
    PFAS above the limit at 1 of 3 sampling points
    C
  • Rogersville
    1.00 ppb
    Copper above the 1,300 ppb action level
    B
County Lead Level — Median 3.4 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 3.4 ppb — 22.7% of the federal action level
Systems by Lead Level
Under 5 ppb
7

All Cities in Lauderdale County

Florence 3.40 ppb C
Underwood-Petersville 3.40 ppb C
Rogersville 1.00 ppb B
Killen 3.40 ppb C
St. Florian 3.40 ppb C
Lexington 1.00 ppb B
Anderson 0.64 ppb A
Showing 7 cities
No active violations Active violations

About Lauderdale County Drinking Water

Lauderdale County is served by 4 water systems covering 7 communities. No community here has an open violation on record.

Of the communities reporting lead results, 7 recorded a detection, with a median of 3.40 ppb — 23% of the federal action level. 0 reported none detected, which means below the laboratory limit rather than an absence of lead.

4 of 7 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 Lauderdale County tap water safe to drink?▼
No community in Lauderdale County has an open violation on record. 4 of 7 have PFAS above the federal limit, which is the main open concern.
What is the lead level in Lauderdale County?▼
Among communities with a detection the median is 3.40 ppb, 23% of the 15 ppb action level. 0 reported none detected and 0 reported no result.
How many water systems serve Lauderdale County?▼
4 community water systems serve 7 communities here.
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