States › Alabama › Marshall County

Marshall County, AL Water Quality

Water quality data for 7 public water systems serving Marshall County, Alabama — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 7 water systems · 7 cities
✅
Excellent — All Systems Performing Well

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

A

Marshall County Earns a A

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

  • Median lead where detected: 1.05 ppb
  • 2 communities with a lead detection, 5 reporting none detected
  • 2 communities with PFAS above the federal limit
  • 0 with significant inspection deficiencies
  • 100.0% of communities have no open violations
1.05 ppb
Median Lead Level
County-wide, 90th percentile
7
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
  • Arab
    Not detected
    No federal limits exceeded on record
    A
  • Guntersville
    Not detected
    No federal limits exceeded on record
    A
  • Grant
    Not detected
    No federal limits exceeded on record
    A
  • Douglas
    1.10 ppb
    No federal limits exceeded on record
    A
  • Union Grove
    Not detected
    1 health-based violation since 2015
    B
⚠ Needs Attention
  • Albertville
    Not detected
    PFAS above the limit at 2 of 2 sampling points
    B
  • Boaz
    1.00 ppb
    PFAS above the limit at 1 of 1 sampling points
    B
  • Union Grove
    Not detected
    1 health-based violation since 2015
    B
  • Arab
    Not detected
    No federal limits exceeded on record
    A
  • Guntersville
    Not detected
    No federal limits exceeded on record
    A
County Lead Level — Median 1.05 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 1.05 ppb — 7% of the federal action level
Systems by Lead Level
Under 5 ppb
2
No Data
5

All Cities in Marshall County

Albertville Not detected B
Boaz 1.00 ppb B
Arab Not detected A
Guntersville Not detected A
Grant Not detected A
Douglas 1.10 ppb A
Union Grove Not detected B
Showing 7 cities
No active violations Active violations

About Marshall County Drinking Water

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

Of the communities reporting lead results, 2 recorded a detection, with a median of 1.05 ppb — 7% of the federal action level. 5 reported none detected, which means below the laboratory limit rather than an absence of lead.

2 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 no significant deficiencies.

Frequently Asked Questions

Is Marshall County tap water safe to drink?▼
No community in Marshall County has an open violation on record. 2 of 7 have PFAS above the federal limit, which is the main open concern.
What is the lead level in Marshall County?▼
Among communities with a detection the median is 1.05 ppb, 7% of the 15 ppb action level. 5 reported none detected and 0 reported no result.
How many water systems serve Marshall County?▼
7 community water systems serve 7 communities here.
← Back to Alabama water quality overview