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Tap water quality report

Deridder, LA

EPA monitoring detected 16 contaminants across the 1 water supplier serving Deridder. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

1
water supplier
14,400
people served
16
contaminants found
Louisiana rankings Lead in Louisiana PFAS in Louisiana

What was found in Deridder'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.

ContaminantLevel vs EPA limitSuppliersSource
Copper
1144.9999999999995 µg/L 88%
of the EPA limit 1300 µg/L
Main supplier: CITY OF DERIDDER WATER SYSTEM · 14,400 people · 2019
1/1 SYR4
Nitrate-Nitrite
248.99999999999991 µg/L 2.5%
of the EPA limit 10000 µg/L
Main supplier: CITY OF DERIDDER WATER SYSTEM · 14,400 people · 2019
1/1 SYR4
Fluoride
190 µg/L 4.8%
of the EPA limit 4000 µg/L
Main supplier: CITY OF DERIDDER WATER SYSTEM · 14,400 people · 2019
1/1 SYR4
Lead
15.749999999999986 µg/L 105%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: CITY OF DERIDDER WATER SYSTEM · 14,400 people · 2019
1/1 SYR4
Di(2-ethylhexyl) Phthalate
3.471 µg/L 58%
of the EPA limit 6 µg/L
Main supplier: CITY OF DERIDDER WATER SYSTEM · 14,400 people · 2019
1/1 SYR4
Chloroform
2.158 µg/L
No EPA limit set
Main supplier: CITY OF DERIDDER WATER SYSTEM · 14,400 people · 2019
1/1 SYR4
TTHM
2.1499999999999995 µg/L 2.7%
of the EPA limit 80 µg/L
Main supplier: CITY OF DERIDDER WATER SYSTEM · 14,400 people · 2019
1/1 SYR4
Gross Beta Particle Activity
1.999 pCi/L
No EPA limit set
Main supplier: CITY OF DERIDDER WATER SYSTEM · 14,400 people · 2019
1/1 SYR4
Antimony, Total
1.6 µg/L 27%
of the EPA limit 6 µg/L
Main supplier: CITY OF DERIDDER WATER SYSTEM · 14,400 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
1.3794999999999997 µg/L 2.3%
of the EPA limit 60 µg/L
Main supplier: CITY OF DERIDDER WATER SYSTEM · 14,400 people · 2019
1/1 SYR4
Dibromochloromethane
1.3 µg/L
No EPA limit set
Main supplier: CITY OF DERIDDER WATER SYSTEM · 14,400 people · 2019
1/1 SYR4
Arsenic
1 µg/L 10%
of the EPA limit 10 µg/L
Main supplier: CITY OF DERIDDER WATER SYSTEM · 14,400 people · 2019
1/1 SYR4
Combined Radium (-226 And -228)
0.9942 pCi/L 20%
of the EPA limit 5 pCi/L
Main supplier: CITY OF DERIDDER WATER SYSTEM · 14,400 people · 2019
1/1 SYR4
Dichloroacetic Acid
0.9500 µg/L
No EPA limit set
Main supplier: CITY OF DERIDDER WATER SYSTEM · 14,400 people · 2019
1/1 SYR4
Trichloroacetic Acid
0.9100 µg/L
No EPA limit set
Main supplier: CITY OF DERIDDER WATER SYSTEM · 14,400 people · 2019
1/1 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: CITY OF DERIDDER WATER SYSTEM · 14,400 people · 2026
1/1 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 Deridder

SupplierPopulation served
CITY OF DERIDDER WATER SYSTEM 14,400

Frequently asked questions about Deridder tap water

Is Deridder tap water safe to drink?

EPA testing detected 16 contaminants in the water serving Deridder. 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 Deridder?

1 public water supplier report drinking-water monitoring for Deridder, Louisiana to the EPA. Each is listed above with its population served.

What contaminants are in Deridder's water?

The contaminants EPA monitoring detected in Deridder include Copper, Nitrate-Nitrite, Fluoride, Lead, Di(2-ethylhexyl) Phthalate. 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.