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Tap water quality report

ZIP 70634 — Deridder, LA

EPA monitoring across the 2 water suppliers serving ZIP 70634 in Deridder, LA detected 21 contaminants. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier below, with the EPA limit for each.

2
water suppliers
18,483
people served
21
contaminants found

What was found in ZIP 70634

The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the 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
2/2 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
Highest in the ZIP: 298 µg/L — SOUTH VERNON PARISH WATERWORKS DISTRICT · 4,083 people · 2019
2/2 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
2/2 SYR4
Barium
210 µg/L 11%
of the EPA limit 2000 µg/L
Highest in the ZIP: SOUTH VERNON PARISH WATERWORKS DISTRICT · 4,083 people · 2019
1/2 SYR4
Lithium
16.5 µg/L
No EPA limit set
Highest in the ZIP: SOUTH VERNON PARISH WATERWORKS DISTRICT · 4,083 people · 2025
1/2 UCMR-5
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
2/2 SYR4
Gross Beta Particle Activity
1.999 pCi/L
No EPA limit set
Main supplier: CITY OF DERIDDER WATER SYSTEM · 14,400 people · 2019
Highest in the ZIP: 12.379999999999995 pCi/L — SOUTH VERNON PARISH WATERWORKS DISTRICT · 4,083 people · 2019
2/2 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
Highest in the ZIP: 8.674999999999995 µg/L — SOUTH VERNON PARISH WATERWORKS DISTRICT · 4,083 people · 2019
2/2 SYR4
Dibromochloromethane
1.3 µg/L
No EPA limit set
Main supplier: CITY OF DERIDDER WATER SYSTEM · 14,400 people · 2019
Highest in the ZIP: 3.6 µg/L — SOUTH VERNON PARISH WATERWORKS DISTRICT · 4,083 people · 2019
2/2 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
2/2 SYR4
Bromodichloromethane
3.3599999999999985 µg/L
No EPA limit set
Highest in the ZIP: SOUTH VERNON PARISH WATERWORKS DISTRICT · 4,083 people · 2019
1/2 SYR4
Chloroform
2.158 µg/L
No EPA limit set
Main supplier: CITY OF DERIDDER WATER SYSTEM · 14,400 people · 2019
2/2 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
Highest in the ZIP: 1.984 µg/L — SOUTH VERNON PARISH WATERWORKS DISTRICT · 4,083 people · 2019
2/2 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
Highest in the ZIP: 1.96275 pCi/L — SOUTH VERNON PARISH WATERWORKS DISTRICT · 4,083 people · 2019
2/2 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
1/2 SYR4
Bromoform
1.342 µg/L
No EPA limit set
Highest in the ZIP: SOUTH VERNON PARISH WATERWORKS DISTRICT · 4,083 people · 2019
1/2 SYR4
Dibromoacetic Acid
1.06 µg/L
No EPA limit set
Highest in the ZIP: SOUTH VERNON PARISH WATERWORKS DISTRICT · 4,083 people · 2019
1/2 SYR4
Arsenic
1 µg/L 10%
of the EPA limit 10 µg/L
Main supplier: CITY OF DERIDDER WATER SYSTEM · 14,400 people · 2019
1/2 SYR4
Dichloroacetic Acid
0.9500 µg/L
No EPA limit set
Main supplier: CITY OF DERIDDER WATER SYSTEM · 14,400 people · 2019
2/2 SYR4
Trichloroacetic Acid
0.9100 µg/L
No EPA limit set
Main supplier: CITY OF DERIDDER WATER SYSTEM · 14,400 people · 2019
2/2 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
Highest in the ZIP: 0.0020 mg/L — SOUTH VERNON PARISH WATERWORKS DISTRICT · 4,083 people · 2025
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.

Water suppliers serving ZIP 70634

SupplierStatePopulation served
CITY OF DERIDDER WATER SYSTEM LA 14,400
SOUTH VERNON PARISH WATERWORKS DISTRICT LA 4,083

Frequently asked questions about ZIP 70634 tap water

Is the tap water in ZIP 70634 safe to drink?

EPA testing detected 21 contaminants across the water suppliers serving ZIP 70634. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.

Which water suppliers serve ZIP 70634?

2 public water suppliers report EPA drinking-water monitoring for ZIP 70634. Each is listed above with its population served.

What contaminants are in ZIP 70634's water?

EPA monitoring detected Copper, Fluoride, Nitrate-Nitrite, Barium, Lithium, and others across this ZIP's suppliers. The full list with levels and sources is above.