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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 3 cities serving 642,268 residents
East Baton Rouge County in Louisiana has an average water quality score of 97/100 (Grade A) based on analysis of 3 municipal water systems. The county's water systems serve approximately 642,268 residents.
Overall, East Baton Rouge County demonstrates good water quality standards. 2 of 3 cities exceed the county average, with Zachary leading with a score of 100/100.
3 cities ranked by water quality score
| Rank | City | Score | Grade | Population |
|---|---|---|---|---|
| 1 | Baton Rouge | 100 | A | 596,844 |
| 2 | Zachary | 100 | A | 31,569 |
| 3 | Baker Biggest deduction: 1 health-based violation (MCL/treatment-technique) in the last 5 years (−10 pts) | 90 | A | 13,855 |
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 |
|---|---|---|---|---|---|
| Radium (2012–2019 avg) | 0.9 pCi/L | 0.9 pCi/L | 5 pCi/L | 18% | 1 |
| TTHM (2012–2019 avg) | 10.091 ug/L | 18.16 ug/L | 80 ug/L | 12.6% | 3 |
| HAA5 (2012–2019 avg) | 5.025 ug/L | 9.966 ug/L | 60 ug/L | 8.4% | 3 |
| Lead (90th percentile) | 0.667 ppb | 1 ppb | 15 ppb | 4.4% | 3 |
| PFAS (PFOA/PFOS max, UCMR5) | 0 ppt | 0 ppt | 4 ppt | 0% | 3 |
Recent violations across county water systems
Other — Consumer Confidence Report Complete Failure to Report - Consumer Confidence Rule
6/30/2017
Water quality in East Baton Rouge County, Louisiana reflects the region's unique combination of water sources, treatment infrastructure, and environmental factors. Our comprehensive analysis examines 3 municipal water systems serving a combined population of over 642,268 residents.
The county shows strong water quality performance, with scores ranging from 90/100 in Baker to 100/100 in Zachary. This 10-point spread indicates relatively consistent water quality standards across municipal systems.
The most prevalent contaminants detected across East Baton Rouge County water systems include Radium (2012–2019 avg), TTHM (2012–2019 avg), HAA5 (2012–2019 avg). Every county-wide average sits below 50% of its EPA Maximum Contaminant Level (MCL).
East Baton Rouge 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.
East Baton Rouge County has an average water quality score of 97/100 (Grade A) based on analysis of 3 municipal water systems serving 642,268 residents.
Zachary has the highest water quality score in East Baton Rouge County at 100/100. View the detailed report for Zachary.
Most cities in East Baton Rouge 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.