Water Quality Report · Updated October 07, 2026
W JEFFERSON WW DISTRICT 2
W JEFFERSON WW DISTRICT 2 delivers tap water graded C (69/100) by TapWaterSafety.org. The utility serves approximately 140,264 residents in JEFFERSON, Louisiana using surface water. The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline; Arsenic detected. For questions, the utility can be reached at 504-838-4305.
Is JEFFERSON tap water safe to drink?
W JEFFERSON WW DISTRICT 2 delivers tap water that earns a grade of C (69/100) from TapWaterSafety.org — an average rating, with several contaminants above health guidelines but generally compliant with US legal limits.
The utility serves 140,264 residents in JEFFERSON, drawing from surface water. Despite being legal under US EPA standards, this water would fail the European Union's Drinking Water Directive, primarily due to haloacetic acids (haa9) significantly above health guideline.
Public testing data identifies 14 contaminants in this water above EWG's health-based guidelines, including: Haloacetic acids (HAA9), Total trihalomethanes (TTHMs), Haloacetic acids (HAA5), Bromodichloromethane, Trichloroacetic acid, Chloroform, Dichloroacetic acid, Arsenic, Dibromochloromethane, Dibromoacetic acid, Nitrate and nitrite, Chromium (hexavalent), Atrazine, 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 W JEFFERSON WW DISTRICT 2 (system ID LA1051004) for the last 3 years. Checked 2026-10-07.
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 JEFFERSON residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for W JEFFERSON WW DISTRICT 2.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 38.6 ppb, 643x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 55.9 ppb, 372x above the EWG health guideline of 0.15 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 35.2 ppb, 352x above the EWG health guideline of 0.1 ppb.
Arsenic detected
Moderate concernArsenic detected at 0.2 ppb.
Contact W JEFFERSON WW DISTRICT 2
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 JEFFERSON
Filters matched to the specific contaminants in this water supply.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
Reverse osmosis certified for arsenic (NSF/ANSI 58)
$429-$599Reverse osmosis certified under NSF/ANSI 58 for arsenic is the most reliable home option.
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 69/100 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 |
38.6 ppb | 0.06 | — | — | — | — | — | 643× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
55.9 ppb | 0.15 | 80.0 | 100 | — | — | — | 372× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
35.2 ppb | 0.1 | 60.0 | 60 | — | — | — | 352× over |
| Bromodichloromethane Disinfection byproduct |
13.9 ppb | 0.06 | — | — | — | — | — | 232× over |
| Trichloroacetic acid Disinfection byproduct |
17.4 ppb | 0.1 | — | — | — | — | — | 174× over |
| Chloroform Disinfection byproduct |
36.3 ppb | 0.4 | — | — | — | — | — | 91× over |
| Dichloroacetic acid Disinfection byproduct |
14.6 ppb | 0.2 | — | — | — | — | — | 73× over |
| Arsenic Heavy metal |
0.2 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 50× over |
| Dibromochloromethane Disinfection byproduct |
4.84 ppb | 0.1 | — | — | — | — | — | 48× over |
| Dibromoacetic acid Disinfection byproduct |
0.732 ppb | 0.03 | — | — | — | — | — | 24× over |
| Nitrate and nitrite Inorganic |
1.4 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 10× over |
| Chromium (hexavalent) Heavy metal |
0.0478 ppb | 0.02 | — | — | — | — | — | 2.4× over |
| Atrazine Pesticide/Herbicide |
0.149 ppb | 0.1 | 3.0 | 0.1 | 100 | 0.15 | — | Fails EU |
| Radium, combined (-226 and -228) Radiological |
0.07 pCi/L | 0.05 | 5.0 | — | — | — | — | 1.4× over |
| Bromoform Disinfection byproduct |
0.437 ppb | 0.5 | — | — | — | — | — | Below guideline |
| 1,4-Dioxane Semi-volatile organic compound |
0.156 ppb | 0.35 | — | — | 50 | 1 | — | Below guideline |
| Uranium Radiological |
0.13 pCi/L | 0.43 | 20.0 | 30 | 30 | 0.43 | — | Below guideline |
| Simazine Pesticide/Herbicide |
0.0275 ppb | 0.1 | 4.0 | — | — | — | — | Below guideline |
| Aluminum Heavy metal |
104.0 ppb | 600.0 | — | 200 | — | 600 | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
2.51 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Vanadium Other |
1.73 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Chlorate Disinfection byproduct |
16.3 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Molybdenum Other |
1.38 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
0.469 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Hexachlorocyclopentadiene Other |
0.0136 ppb | 2.0 | 50.0 | — | — | — | — | Below guideline |
| 2,4-D Pesticide/Herbicide |
0.116 ppb | 20.0 | 70.0 | — | — | — | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
3.05 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
0.0314 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Strontium Radiological |
0.175 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Dalapon Pesticide/Herbicide |
0.734 ppb | — | 200.0 | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.36 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Lithium Other |
3.33 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.
W JEFFERSON WW DISTRICT 2 service area
This water system serves 1 community in Jefferson Parish County, Louisiana. Click any city for its dedicated tap water quality page.
Find the right filter for JEFFERSON water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.