Tap Water Quality Report
Tap water quality in DENHAM SPRINGS, Louisiana
Tap water in DENHAM SPRINGS, Louisiana receives a grade of B (80/100) from TapWaterSafety.org. It's served by WARD II WATER DISTRICT. The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline; Bromodichloromethane significantly above health guideline; Arsenic detected. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in DENHAM SPRINGS's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving DENHAM SPRINGS.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 9.64 ppb, 161x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 11.1 ppb, 74x above the EWG health guideline of 0.15 ppb.
Bromodichloromethane significantly above health guideline
Moderate concernBromodichloromethane detected at 3.15 ppb, 53x above the EWG health guideline of 0.06 ppb.
Arsenic detected
Moderate concernArsenic detected at 0.11 ppb.
EPA compliance record
Official U.S. EPA records for WARD II WATER DISTRICT (system ID LA1063039) 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.
Recommended filters for DENHAM SPRINGS
Filters matched to the specific contaminants in DENHAM SPRINGS's 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.
All contaminants detected in DENHAM SPRINGS's tap water
Every contaminant identified, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal. 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 |
9.64 ppb | 0.06 | — | — | — | — | — | 161× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
11.1 ppb | 0.15 | 80.0 | 100 | — | — | — | 74× over |
| Bromodichloromethane Disinfection byproduct |
3.15 ppb | 0.06 | — | — | — | — | — | 53× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
5.27 ppb | 0.1 | 60.0 | 60 | — | — | — | 53× over |
| Dibromoacetic acid Disinfection byproduct |
0.947 ppb | 0.03 | — | — | — | — | — | 32× over |
| Arsenic Heavy metal |
0.11 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 28× over |
| Dibromochloromethane Disinfection byproduct |
2.13 ppb | 0.1 | — | — | — | — | — | 21× over |
| Trichloroacetic acid Disinfection byproduct |
1.46 ppb | 0.1 | — | — | — | — | — | 15× over |
| Chloroform Disinfection byproduct |
5.55 ppb | 0.4 | — | — | — | — | — | 14× over |
| Dichloroacetic acid Disinfection byproduct |
2.15 ppb | 0.2 | — | — | — | — | — | 11× over |
| Radium, combined (-226 and -228) Radiological |
0.13 pCi/L | 0.05 | 5.0 | — | — | — | — | 2.7× over |
| Bromoform Disinfection byproduct |
0.237 ppb | 0.5 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
26.1 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Uranium Radiological |
0.06 pCi/L | 0.43 | 20.0 | 30 | 30 | 0.43 | — | Below guideline |
| Chromium (hexavalent) Heavy metal |
0.00178 ppb | 0.02 | — | — | — | — | — | Below guideline |
| Nitrate and nitrite Inorganic |
0.0118 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.717 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Aluminum Heavy metal |
9.0 ppb | 600.0 | — | 200 | — | 600 | — | Below guideline |
| Molybdenum Other |
0.245 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.00835 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| 1-Butanol Other |
0.08 ppb | — | — | — | — | — | — | Below guideline |
| 2-propen-1-ol Other |
0.0367 ppb | — | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.185 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Germanium Other |
0.373 ppb | — | — | — | — | — | — | Below guideline |
| Lithium Other |
12.2 ppb | — | — | — | — | — | — | Below guideline |
| Quinoline Other |
0.001 ppb | — | — | — | — | — | — | Below guideline |
| Silver Other |
0.9 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, California OEHHA PHGs, EWG Tap Water Database.
Treatment plant contact info
For service issues, water quality concerns, or to request a Consumer Confidence Report from WARD II WATER DISTRICT.