States › Georgia › Gwinnett County

Gwinnett County, GA Water Quality

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

📅 2026 Report 🔄 Data updated 2026 Q2 📍 2 water systems · 13 cities
✅
Excellent — All Systems Performing Well

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

A

Gwinnett County Earns a A

Gwinnett County: 13 communities across 2 water systems. 100.0% have no open violations.

  • Median lead where detected: none detected
  • 0 communities with a lead detection, 13 reporting none detected
  • 0 communities with PFAS above the federal limit
  • 0 with significant inspection deficiencies
  • 100.0% of communities have no open violations
—
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
  • Peachtree Corners
    Not detected
    No federal limits exceeded on record
    A
  • Duluth
    Not detected
    No federal limits exceeded on record
    A
  • Sugar Hill
    Not detected
    No federal limits exceeded on record
    A
  • Suwanee
    Not detected
    No federal limits exceeded on record
    A
  • Norcross
    Not detected
    No federal limits exceeded on record
    A
⚠ Needs Attention
  • Peachtree Corners
    Not detected
    No federal limits exceeded on record
    A
  • Duluth
    Not detected
    No federal limits exceeded on record
    A
  • Sugar Hill
    Not detected
    No federal limits exceeded on record
    A
  • Suwanee
    Not detected
    No federal limits exceeded on record
    A
  • Norcross
    Not detected
    No federal limits exceeded on record
    A

All Cities in Gwinnett County

Peachtree Corners Not detected A
Duluth Not detected A
Sugar Hill Not detected A
Suwanee Not detected A
Norcross Not detected A
Snellville Not detected A
Lilburn Not detected A
Mountain Park Not detected A
Buford Not detected B
Dacula Not detected A
Grayson Not detected A
Berkeley Lake Not detected A
Lawrenceville Not detected A
Showing 13 cities
No active violations Active violations

About Gwinnett County Drinking Water

Gwinnett County is served by 2 water systems covering 13 communities. No community here has an open violation on record.

Lead was not detected in any community in Gwinnett County that reported a result.

No community here has PFAS above the federal limit on record. State inspectors recorded no significant deficiencies.

Frequently Asked Questions

Is Gwinnett County tap water safe to drink?▼
No community in Gwinnett County has an open violation on record. No community has PFAS above the federal limit on record.
What is the lead level in Gwinnett County?▼
No community reported a lead detection.
How many water systems serve Gwinnett County?▼
2 community water systems serve 13 communities here.
← Back to Georgia water quality overview