What was found in Denham Springs's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Fluoride | 358 µg/L 9% of the EPA limit 4000 µg/L Main supplier: WARD II WATER DISTRICT · 78,147 people · 2019
Highest in the city: 600 µg/L — CITY OF DENHAM SPRINGS WATER SYSTEM · 25,725 people · 2018 | 2/2 | SYR4 |
| Copper | 500 µg/L 38% of the EPA limit 1300 µg/L Main supplier: WARD II WATER DISTRICT · 78,147 people · 2019 | 2/2 | SYR4 |
| Nitrate-Nitrite | 500 µg/L 5% of the EPA limit 10000 µg/L Main supplier: WARD II WATER DISTRICT · 78,147 people · 2019 | 2/2 | SYR4 |
| Barium | 26.1 µg/L 1.3% of the EPA limit 2000 µg/L Main supplier: WARD II WATER DISTRICT · 78,147 people · 2019 | 2/2 | SYR4 |
| TTHM | 17.19 µg/L 21% of the EPA limit 80 µg/L Main supplier: WARD II WATER DISTRICT · 78,147 people · 2019
Highest in the city: 25.75 µg/L — CITY OF DENHAM SPRINGS WATER SYSTEM · 25,725 people · 2019 | 2/2 | SYR4 |
| Xylenes, Total | 21.393 µg/L 0.2% of the EPA limit 10000 µg/L Main supplier: WARD II WATER DISTRICT · 78,147 people · 2019 | 1/2 | SYR4 |
| Lithium | 19 µg/L No EPA limit set Main supplier: WARD II WATER DISTRICT · 78,147 people · 2023 | 2/2 | UCMR-5 |
| Chloroform | 6.955 µg/L No EPA limit set Main supplier: WARD II WATER DISTRICT · 78,147 people · 2019
Highest in the city: 14.34 µg/L — CITY OF DENHAM SPRINGS WATER SYSTEM · 25,725 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 4.2 µg/L 7% of the EPA limit 60 µg/L Main supplier: WARD II WATER DISTRICT · 78,147 people · 2019
Highest in the city: 11.84 µg/L — CITY OF DENHAM SPRINGS WATER SYSTEM · 25,725 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 2.66 µg/L No EPA limit set Main supplier: WARD II WATER DISTRICT · 78,147 people · 2019
Highest in the city: 7.83 µg/L — CITY OF DENHAM SPRINGS WATER SYSTEM · 25,725 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 4.88 µg/L No EPA limit set Main supplier: WARD II WATER DISTRICT · 78,147 people · 2019
Highest in the city: 7.564 µg/L — CITY OF DENHAM SPRINGS WATER SYSTEM · 25,725 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 4.865 µg/L No EPA limit set Main supplier: WARD II WATER DISTRICT · 78,147 people · 2019
Highest in the city: 5.235 µg/L — CITY OF DENHAM SPRINGS WATER SYSTEM · 25,725 people · 2019 | 2/2 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 4.68 µg/L 78% of the EPA limit 6 µg/L Main supplier: WARD II WATER DISTRICT · 78,147 people · 2018 | 2/2 | SYR4 |
| Trichloroacetic Acid | 1.84 µg/L No EPA limit set Main supplier: WARD II WATER DISTRICT · 78,147 people · 2019
Highest in the city: 3.17 µg/L — CITY OF DENHAM SPRINGS WATER SYSTEM · 25,725 people · 2019 | 2/2 | SYR4 |
| Lead | 3 µg/L 20% of the EPA limit 15 µg/L Main supplier: WARD II WATER DISTRICT · 78,147 people · 2019 | 2/2 | SYR4 |
| Bromoform | 1.49 µg/L No EPA limit set Main supplier: WARD II WATER DISTRICT · 78,147 people · 2019
Highest in the city: 2.43 µg/L — CITY OF DENHAM SPRINGS WATER SYSTEM · 25,725 people · 2019 | 2/2 | SYR4 |
| Gross Beta Particle Activity | 1.538 pCi/L No EPA limit set Main supplier: WARD II WATER DISTRICT · 78,147 people · 2019
Highest in the city: 2.02 pCi/L — CITY OF DENHAM SPRINGS WATER SYSTEM · 25,725 people · 2018 | 2/2 | SYR4 |
| Arsenic | 2 µg/L 20% of the EPA limit 10 µg/L Main supplier: WARD II WATER DISTRICT · 78,147 people · 2019 | 1/2 | SYR4 |
| Dibromoacetic Acid | 1.56 µg/L No EPA limit set Main supplier: WARD II WATER DISTRICT · 78,147 people · 2019
Highest in the city: 1.9 µg/L — CITY OF DENHAM SPRINGS WATER SYSTEM · 25,725 people · 2019 | 2/2 | SYR4 |
| Combined Uranium | 1.49 µg/L 5% of the EPA limit 30 µg/L Main supplier: WARD II WATER DISTRICT · 78,147 people · 2019 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 1.2284 pCi/L 25% of the EPA limit 5 pCi/L Main supplier: WARD II WATER DISTRICT · 78,147 people · 2019 | 2/2 | SYR4 |
| Antimony, Total | 1.1 µg/L 18% of the EPA limit 6 µg/L Main supplier: WARD II WATER DISTRICT · 78,147 people · 2019 | 1/2 | SYR4 |
| Selenium | 1.087 µg/L 2.2% of the EPA limit 50 µg/L Main supplier: WARD II WATER DISTRICT · 78,147 people · 2019 | 1/2 | SYR4 |
| Ethylbenzene | 1.05 µg/L 0.2% of the EPA limit 700 µg/L Main supplier: WARD II WATER DISTRICT · 78,147 people · 2019 | 1/2 | SYR4 |
| Toluene | 0.5600 µg/L 0.1% of the EPA limit 1000 µg/L Main supplier: WARD II WATER DISTRICT · 78,147 people · 2019 | 1/2 | SYR4 |
| Monochloroacetic Acid | 0.5485 µg/L No EPA limit set Highest in the city: CITY OF DENHAM SPRINGS WATER SYSTEM · 25,725 people · 2019 | 1/2 | SYR4 |
| Lead | 0.0010 mg/L 6.7% of the EPA limit 0.0150 mg/L Main supplier: WARD II WATER DISTRICT · 78,147 people · 2023 | 2/2 | LCR |
Each bar shows the measured level as a share of the EPA limit: green is
well under, amber is close to it, red is over. For lead and copper the
limit applies to exactly the 90th-percentile figure shown, so red there
means a real exceedance. For everything else the limit applies to a
running annual average while the figure is the 95th percentile of the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Denham Springs
| Supplier | Population served |
|---|---|
| WARD II WATER DISTRICT | 78,147 |
| CITY OF DENHAM SPRINGS WATER SYSTEM | 25,725 |
Frequently asked questions about Denham Springs tap water
Is Denham Springs tap water safe to drink?
EPA testing detected 27 contaminants in the water serving Denham Springs. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Denham Springs?
2 public water suppliers report drinking-water monitoring for Denham Springs, Louisiana to the EPA. Each is listed above with its population served.
What contaminants are in Denham Springs's water?
The contaminants EPA monitoring detected in Denham Springs include Fluoride, Copper, Nitrate-Nitrite, Barium, TTHM. The full list, with the level at the main supplier and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.