Water Quality Report · Updated October 07, 2026
NEW ORLEANS CARROLLTON WATER WORKS
NEW ORLEANS CARROLLTON WATER WORKS delivers tap water graded D (57/100) by TapWaterSafety.org. The utility serves approximately 334,903 residents in NEW ORLEANS, Louisiana using surface water. The most significant water quality concerns are: PFAS contamination; Haloacetic acids (HAA9) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline. For questions, the utility can be reached at 504-865-0410.
Is NEW ORLEANS tap water safe to drink?
NEW ORLEANS CARROLLTON WATER WORKS delivers tap water that earns a grade of D (57/100) from TapWaterSafety.org — a below-average rating, with multiple concerns including pfas contamination.
The utility serves 334,903 residents in NEW ORLEANS, drawing from surface water.
Public testing data identifies 15 contaminants in this water above EWG's health-based guidelines, including: Haloacetic acids (HAA9), Haloacetic acids (HAA5), Total trihalomethanes (TTHMs), Bromodichloromethane, Dichloroacetic acid, Trichloroacetic acid, Chloroform, Dibromoacetic acid, Dibromochloromethane, Perfluorooctanoic acid (PFOA), Nitrate and nitrite, Perfluorooctane sulfonate (PFOS), Chromium (hexavalent), Chlorate, Radium, combined (-226 and -228). For most residents, a properly certified home filter at the kitchen tap is the most cost-effective way to reduce exposure to whatever's in your water. See our filter recommendations below, matched specifically to this utility's contaminant profile.
EPA compliance record
Official U.S. EPA records for NEW ORLEANS CARROLLTON WATER WORKS (system ID LA1071009) for the last 3 years. Checked 2026-10-07.
| Rule | Type | Since | Status |
|---|---|---|---|
| Interim and Long Term 1 Enhanced Surface Water Treatment Rule | Required treatment not met | 01/01/2025 | Open |
| Revised Total Coliform Rule | Missed testing | 06/01/2023 | Open |
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Quick actions for NEW ORLEANS residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for NEW ORLEANS CARROLLTON WATER WORKS.
PFAS contamination
Severe concernPerfluorooctane sulfonate (PFOS), Perfluorooctanoic acid (PFOA) detected. PFAS are persistent chemicals linked to cancer and immune effects with no known safe exposure threshold.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 20.9 ppb, 348x above the EWG health guideline of 0.06 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 20.8 ppb, 208x above the EWG health guideline of 0.1 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 21.4 ppb, 143x above the EWG health guideline of 0.15 ppb.
Contact NEW ORLEANS CARROLLTON WATER WORKS
Reach the utility directly for service issues, water quality concerns, or to request your Consumer Confidence Report.
General Contact
Treatment Plant
Recommended water filters for NEW ORLEANS
Filters matched to the specific contaminants in this water supply.
Filter certified for PFOA/PFOS (NSF/ANSI 53 or 58)
$180-$750Reverse osmosis and some carbon block filters reduce PFAS. Look for certification to NSF/ANSI 53 or 58 for PFOA/PFOS.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
Score breakdown
This utility's overall score of 57/100 breaks down across five weighted components. Read the full methodology →
Contaminants detected — international standards comparison
Every contaminant detected, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal (the strictest US benchmark). Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Haloacetic acids (HAA9) Disinfection byproduct |
20.9 ppb | 0.06 | — | — | — | — | — | 348× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
20.8 ppb | 0.1 | 60.0 | 60 | — | — | — | 208× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
21.4 ppb | 0.15 | 80.0 | 100 | — | — | — | 143× over |
| Bromodichloromethane Disinfection byproduct |
6.06 ppb | 0.06 | — | — | — | — | — | 101× over |
| Dichloroacetic acid Disinfection byproduct |
14.0 ppb | 0.2 | — | — | — | — | — | 70× over |
| Trichloroacetic acid Disinfection byproduct |
4.78 ppb | 0.1 | — | — | — | — | — | 48× over |
| Chloroform Disinfection byproduct |
14.0 ppb | 0.4 | — | — | — | — | — | 35× over |
| Dibromoacetic acid Disinfection byproduct |
0.508 ppb | 0.03 | — | — | — | — | — | 17× over |
| Dibromochloromethane Disinfection byproduct |
1.4 ppb | 0.1 | — | — | — | — | — | 14× over |
| Perfluorooctanoic acid (PFOA) PFAS |
0.911 ppt | 0.09 | 4.0 | 100 | 100 | 0.007 | — | 10× over |
| Nitrate and nitrite Inorganic |
1.16 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 8.3× over |
| Perfluorooctane sulfonate (PFOS) PFAS |
0.933 ppt | 0.3 | 4.0 | 100 | 100 | 1 | — | 3.1× over |
| Chromium (hexavalent) Heavy metal |
0.031 ppb | 0.02 | — | — | — | — | — | 1.6× over |
| Chlorate Disinfection byproduct |
272.5 ppb | 210.0 | — | — | — | — | — | 1.3× over |
| Radium, combined (-226 and -228) Radiological |
0.06 pCi/L | 0.05 | 5.0 | — | — | — | — | 1.2× over |
| Atrazine Pesticide/Herbicide |
0.0745 ppb | 0.1 | 3.0 | 0.1 | 100 | 0.15 | — | Below guideline |
| 1,4-Dioxane Semi-volatile organic compound |
0.184 ppb | 0.35 | — | — | 50 | 1 | — | Below guideline |
| Uranium Radiological |
0.16 pCi/L | 0.43 | 20.0 | 30 | 30 | 0.43 | — | Below guideline |
| Simazine Pesticide/Herbicide |
0.0334 ppb | 0.1 | 4.0 | — | — | — | — | Below guideline |
| Trichloroethylene Volatile organic compound |
0.0856 ppb | 0.4 | 5.0 | 10 | 20 | 1.7 | — | Below guideline |
| Aluminum Heavy metal |
43.3 ppb | 600.0 | — | 200 | — | 600 | — | Below guideline |
| Molybdenum Other |
1.55 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Vanadium Other |
0.795 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Bromoform Disinfection byproduct |
0.0158 ppb | 0.5 | — | — | — | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
1.4 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
6.87 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.155 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
0.531 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| 2,4-D Pesticide/Herbicide |
0.0288 ppb | 20.0 | 70.0 | — | — | — | — | Below guideline |
| Perfluorohexanoic Acid (PFHxA) PFAS |
0.333 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.176 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Bromide Other |
82.0 ppb | — | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.422 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Lithium Other |
2.51 ppb | — | — | — | — | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines (4th ed.), California OEHHA PHGs, EWG Tap Water Database.
NEW ORLEANS CARROLLTON WATER WORKS service area
This water system serves 1 community in Orleans Parish County, Louisiana. Click any city for its dedicated tap water quality page.
Find the right filter for NEW ORLEANS water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.