Lead In Drinking Water In Louisiana
What residents of Louisiana need to know about lead in drinking water — including how it enters water, which utilities have documented violations, and what steps to take.
Source: EPA SDWIS, Louisiana Department of Health (LDH), CDC · Last reviewed: 2025-01-01
Quick Answer
Is lead in drinking water a real concern in Louisiana?
Yes — New Orleans has one of the most documented lead service line problems in the Gulf South, with thousands of identified lead service lines in older neighborhoods.
Is this mostly a public-water issue, a private-well issue, or both?
Both public water service lines and household plumbing; New Orleans concentrates the highest risk, while Baton Rouge and Shreveport have older infrastructure in their historic cores.
What is the main reason residents should care?
New Orleans has a dense concentration of pre-1920 housing built when lead service lines and lead plumbing were standard. Louisiana's hot climate accelerates corrosion in water distribution systems, and some of the state's water chemistry characteristics can increase lead leaching from older plumbing.
Key Facts
| Federal Lead Action Level | 15 µg/L — no safe level per CDC |
| New Orleans context | Thousands of lead service lines in pre-1920 historic neighborhoods |
| Climate factor | Hot climate and thermal stress accelerate corrosion in Louisiana's distribution systems |
| Primary risk areas | New Orleans historic neighborhoods; older Baton Rouge and Shreveport city cores |
| State oversight | Louisiana Department of Health (LDH) |
Why This Matters in Louisiana
New Orleans is one of the oldest major cities in the U.S. south, with large concentrations of 19th and early 20th century housing across its historic neighborhoods — the Garden District, Tremé, Bywater, Holy Cross, and Uptown. These areas have extensive lead service line infrastructure and widespread lead solder in household plumbing. Louisiana's subtropical climate means water infrastructure is under continuous thermal stress, and warm water can carry dissolved lead more readily than cold water. The Sewerage and Water Board of New Orleans oversees drinking water distribution and has engaged in lead service line identification. LDH enforces the Lead and Copper Rule statewide. Baton Rouge and Shreveport's older residential areas share similar pre-1940 housing characteristics.
Historical Context
New Orleans has a documented history of lead paint and lead plumbing exposure concentrated in older historic neighborhoods. The city's aging water distribution infrastructure includes thousands of lead service lines, and advocacy organizations and public health agencies have pushed for accelerated replacement.
Louisiana Utilities With Lead Violation Records
The utilities listed below have at least one lead violation on record in EPA's SDWIS database. Violations may be open or resolved — see individual utility pages for current status and risk level.
City of Bossier City Water System
Louisiana · 78,960 served
Ward Ii Water District
Louisiana · 73,506 served
Monroe Water System
Louisiana · 57,000 served
St John Water District 3
Louisiana · 31,965 served
City of Denham Springs Water System
Louisiana · 25,725 served
Beauregard Water Works Dist #3
Louisiana · 24,000 served
City of Opelousas Water System
Louisiana · 20,388 served
Rapides Parish Waterworks District 3
Louisiana · 19,983 served
Covington Water Supply
Louisiana · 16,185 served
City of Bogalusa Water System
Louisiana · 14,000 served
How Lead Gets Into Drinking Water
Lead service lines
The pipe connecting a home to the water main may be made of lead, especially in pre-1986 construction. Water sitting in these lines can accumulate lead before it reaches the tap.
Lead solder
Lead solder at pipe joints was banned for potable water systems in 1986. Homes built before that date — including significant portions of older Louisiana cities — may still have lead solder throughout their plumbing.
Older brass fixtures
Faucets, valves, and fixtures with high lead content were common before the 2014 revision of 'lead-free' standards. Replacing older fixtures at kitchen and drinking taps can meaningfully reduce exposure.
Corrosive water chemistry
Soft, acidic, or low-alkalinity water dissolves lead from plumbing more readily. Utilities use orthophosphate and other corrosion control treatments, but household plumbing after the meter is not within their control.
Who Should Pay Closest Attention
Families with young children in New Orleans's historic neighborhoods — particularly in older rental housing — face among the highest lead exposure risk in the Gulf South. Renters in pre-1920 New Orleans buildings should assume lead plumbing is likely present and use a certified point-of-use filter.
Families with children under six
Pregnant residents
Households in homes built before 1986
Renters who cannot inspect building plumbing
Residents on a confirmed lead service line
Households that had plumbing work done recently (disturbances dislodge protective scale)
How to Check Your Situation in Louisiana
- 1
Identify your water utility. Use the ZIP lookup below or browse the Louisiana utility directory on this site.
- 2
Read your utility's page on this site to see its current risk level and any open lead violations.
- 3
Contact your utility and ask for your address-level service line material status. Under the federal Lead and Copper Rule Revisions (LCRR), utilities must maintain and provide this information.
- 4
Review your utility's most recent Consumer Confidence Report (CCR) — mailed annually or available on the utility's website.
- 5
Consider testing your tap water at a Louisiana Department of Health (LDH)-certified lab. Your state health department or Louisiana Department of Health (LDH) maintains a list of certified labs.
- 6
If you have young children or are pregnant, install a certified NSF/ANSI 53 or 58 filter at the kitchen tap as a precautionary measure.
Treatment Options
Boiling does not remove lead. Use a certified filter for drinking and cooking water.
NSF/ANSI Standard 53 — Activated Carbon Block
Under-sink or pitcher filters certified to Standard 53 are independently verified to reduce lead. Replace filters on the manufacturer's schedule — an overdue filter may not perform as certified.
NSF/ANSI Standard 58 — Reverse Osmosis
RO systems certified to Standard 58 remove 95–99% of lead and a broad range of contaminants. Requires under-sink installation. More comprehensive than Standard 53 for households with multiple contaminant concerns.
Flushing — temporary mitigation only
EPA recommends flushing the cold tap for 30 seconds to 2 minutes if water has sat in pipes for 6+ hours. Not a substitute for certified filtration or service line replacement.
Frequently Asked Questions
Related Pages
Lead — National Overview
All U.S. utilities with lead records
Louisiana State Overview
All utilities and water quality data
Nitrate in Drinking Water
A separate but common concern
Reverse Osmosis Guide
Removes 95–99% of lead
Activated Carbon Filter Guide
NSF/ANSI 53 certified options
All Contaminants
Complete reference library
Data Sources & Provenance
All data on this page is sourced from official U.S. government or public datasets.
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Louisiana Department of Health (LDH) ↗