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Toxic Tap Water Plagues Southeast Louisiana Homes
30 Sep
Summary
- Widespread detection of harmful PFAS chemicals in home tap water
- Elevated levels of arsenic, lead, and salt found in drinking water
- Disparities in contaminant exposure based on race, income, and education

A concerning new report has revealed the widespread presence of harmful chemicals and heavy metals in the drinking water of Southeast Louisiana. The Southeast Louisiana Residential Water Quality Study, conducted by the Water Collaborative of Greater New Orleans, tested tap water from over 100 homes across seven parishes and found that nearly every sample contained at least trace amounts of per- and polyfluoroalkyl substances (PFAS), also known as "forever chemicals."
PFAS have been linked to a range of health issues, including high cholesterol, liver damage, and reduced vaccine response in children. The study detected PFAS concentrations ranging from trace levels to one instance in Plaquemines Parish that measured 43% above the pending federal limit. Researchers also found varying amounts of arsenic in 70% of samples and lead in 67%, as well as salt levels exceeding EPA recommendations in all samples taken during low water levels.
The study's findings highlight sharp disparities in who is exposed to these contaminants. While white households had more frequent PFAS detections, Black and lower-income households recorded the highest concentrations of heavy metals. This trend was consistent across income and education levels, with the most vulnerable populations facing the greatest risks.
"These small amounts of exposures can add up, which is why ongoing monitoring and mitigation is important," said Taya Fournette, the study's lead researcher. The results underscore the need for stronger safeguards to protect Louisiana residents from the long-term health impacts of drinking water contamination.