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Not health advice. Contact your local water utility for concerns.
Data from EPA Water Quality Reports. For official information, contact your water utility or health department.
Water quality data for 1 cities serving 975,000 residents
Gwinnett County in Georgia has an average water quality score of 100/100 (Grade A) based on analysis of 1 municipal water systems. The county's water systems serve approximately 975,000 residents.
Overall, Gwinnett County demonstrates good water quality standards. 1 of 1 cities exceed the county average, with Lawrenceville leading with a score of 100/100.
1 cities ranked by water quality score
| Rank | City | Score | Grade | Population |
|---|---|---|---|---|
| 1 | Lawrenceville | 100 | A | 975,000 |
Real EPA readings across county water systems (lead: latest 90th percentile; PFAS: UCMR5 2023–2026; others: 2012–2019 averages)
| Contaminant | Avg Level | Max Level | EPA Limit | % of Limit | Cities |
|---|---|---|---|---|---|
| Lead (90th percentile) | 0 ppb | 0 ppb | 15 ppb | 0% | 1 |
| PFAS (PFOA/PFOS max, UCMR5) | 0 ppt | 0 ppt | 4 ppt | 0% | 1 |
Water quality in Gwinnett County, Georgia reflects the region's unique combination of water sources, treatment infrastructure, and environmental factors. Our comprehensive analysis examines 1 municipal water systems serving a combined population of over 975,000 residents.
The county shows strong water quality performance, with scores ranging from 100/100 in Lawrenceville to 100/100 in Lawrenceville. This 0-point spread indicates relatively consistent water quality standards across municipal systems.
The most prevalent contaminants detected across Gwinnett County water systems include Lead (90th percentile), PFAS (PFOA/PFOS max, UCMR5). Every county-wide average sits below 50% of its EPA Maximum Contaminant Level (MCL).
Gwinnett County's water quality is generally good. Residents can feel confident in their tap water quality, though those with specific health concerns or sensitivity to certain contaminants may still benefit from filtration. Regular review of your city's annual Consumer Confidence Report is recommended.
Gwinnett County has an average water quality score of 100/100 (Grade A) based on analysis of 1 municipal water systems serving 975,000 residents.
Lawrenceville has the highest water quality score in Gwinnett County at 100/100. View the detailed report for Lawrenceville.
Most cities in Gwinnett County have water that meets EPA standards. However, a water filter can provide additional protection and improve taste. The need depends on your specific city and any personal health considerations.
Click on any city in the rankings table above to view its detailed water quality report, including contaminant levels, EPA compliance history, and filter recommendations.