United States Last reviewed: August 28, 2026

Louisiana Tap Water Quality

Q: Is tap water safe to drink in New Orleans and Louisiana?

Yes: New Orleans and Baton Rouge meet all EPA standards. Expect occasional precautionary boil-water advisories after pressure drops, and follow them when issued.

Q: What about the brain-eating amoeba in Louisiana water?

Naegleria fowleri was detected in a few parish systems' pipes in past years. Drinking the water is safe; the organism infects through the nose, so avoid getting untreated tap water deep into nasal passages during advisories. Affected systems ran chlorine burns.

Q: Did saltwater reach New Orleans' drinking water?

The 2023 drought pushed a saltwater wedge far upriver, prompting sill construction and emergency planning; it was halted before affecting the city's intakes, though smaller downriver systems needed barged water.

about 950

Community water systems

City reports on this site

Tracked contaminants

August 28, 2026

Data reviewed

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Overview

New Orleans and Baton Rouge sit on very different supplies: the Sewerage & Water Board treats Mississippi River water in aging plants, while Baton Rouge pumps pristine groundwater from the Southern Hills aquifer. Both meet federal standards, but the state's infrastructure is among the country's most stressed.

Louisiana's recurring problems include boil-water advisories from pressure losses and storm damage, saltwater wedges creeping up the Mississippi in drought years (threatening Plaquemines and New Orleans intakes in 2023), disinfection byproducts in small systems, and the nation's most publicized brain-eating amoeba detections, which forced chlorine burns in several parish systems.

Common Contaminants in Louisiana

Disinfection byproducts

Warm, organic-rich water makes THM control a constant battle in small surface-water systems

Lead from plumbing

New Orleans' old housing stock carries legacy lines; corrosion control and replacement programs are underway

Naegleria fowleri detections

Rare amoeba findings in a few parish distribution systems prompted precautionary chlorine burns; tap water remains safe to drink (the risk pathway is nasal, not ingestion)

Saltwater intrusion

Drought-year wedges up the Mississippi threaten downriver intakes, managed with barriers and barged water in 2023

Violations & Compliance

Compliance is solid in the metros but fragile in small systems, which lead the nation in boil-water advisories per capita. Federal infrastructure funds are rebuilding storm-damaged and deferred systems across the state.