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Tap water quality report

ZIP 71078 — Stonewall, LA

EPA monitoring across the 2 water suppliers serving ZIP 71078 in Stonewall, LA detected 30 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
14,781
people served
30
contaminants found

What was found in ZIP 71078

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
800 µg/L 62%
of the EPA limit 1300 µg/L
Main supplier: NORTH DESOTO WATER SYSTEM · 7,608 people · 2019
Highest in the ZIP: 1690 µg/L — DESOTO PARISH WATER WORKS DISTRICT 1 · 7,173 people · 2019
2/2 SYR4
Nitrate-Nitrite
83 µg/L 0.8%
of the EPA limit 10000 µg/L
Main supplier: NORTH DESOTO WATER SYSTEM · 7,608 people · 2019
Highest in the ZIP: 350 µg/L — DESOTO PARISH WATER WORKS DISTRICT 1 · 7,173 people · 2019
2/2 SYR4
Fluoride
295 µg/L 7.4%
of the EPA limit 4000 µg/L
Main supplier: NORTH DESOTO WATER SYSTEM · 7,608 people · 2019
2/2 SYR4
Total Haloacetic Acids (HAA5)
15.105 µg/L 25%
of the EPA limit 60 µg/L
Main supplier: NORTH DESOTO WATER SYSTEM · 7,608 people · 2019
Highest in the ZIP: 145.2 µg/L — DESOTO PARISH WATER WORKS DISTRICT 1 · 7,173 people · 2019
2/2 SYR4
TTHM
30.825 µg/L 39%
of the EPA limit 80 µg/L
Main supplier: NORTH DESOTO WATER SYSTEM · 7,608 people · 2019
Highest in the ZIP: 143.48 µg/L — DESOTO PARISH WATER WORKS DISTRICT 1 · 7,173 people · 2019
2/2 SYR4
Barium
121 µg/L 6.1%
of the EPA limit 2000 µg/L
Main supplier: NORTH DESOTO WATER SYSTEM · 7,608 people · 2019
2/2 SYR4
Chloroform
4.9 µg/L
No EPA limit set
Main supplier: NORTH DESOTO WATER SYSTEM · 7,608 people · 2019
Highest in the ZIP: 100.125 µg/L — DESOTO PARISH WATER WORKS DISTRICT 1 · 7,173 people · 2019
2/2 SYR4
Dichloroacetic Acid
7.725 µg/L
No EPA limit set
Main supplier: NORTH DESOTO WATER SYSTEM · 7,608 people · 2019
Highest in the ZIP: 72.2 µg/L — DESOTO PARISH WATER WORKS DISTRICT 1 · 7,173 people · 2019
2/2 SYR4
Trichloroacetic Acid
3.8 µg/L
No EPA limit set
Main supplier: NORTH DESOTO WATER SYSTEM · 7,608 people · 2019
Highest in the ZIP: 63.925 µg/L — DESOTO PARISH WATER WORKS DISTRICT 1 · 7,173 people · 2019
2/2 SYR4
Bromodichloromethane
7.922 µg/L
No EPA limit set
Main supplier: NORTH DESOTO WATER SYSTEM · 7,608 people · 2019
Highest in the ZIP: 42.945 µg/L — DESOTO PARISH WATER WORKS DISTRICT 1 · 7,173 people · 2019
2/2 SYR4
Dalapon
35.5523 µg/L 18%
of the EPA limit 200 µg/L
Highest in the ZIP: DESOTO PARISH WATER WORKS DISTRICT 1 · 7,173 people · 2019
1/2 SYR4
Dibromochloromethane
12.635 µg/L
No EPA limit set
Main supplier: NORTH DESOTO WATER SYSTEM · 7,608 people · 2019
Highest in the ZIP: 25.4 µg/L — DESOTO PARISH WATER WORKS DISTRICT 1 · 7,173 people · 2019
2/2 SYR4
Lithium
23.3 µg/L
No EPA limit set
Main supplier: NORTH DESOTO WATER SYSTEM · 7,608 people · 2024
1/2 UCMR-5
Monochloroacetic Acid
3.765 µg/L
No EPA limit set
Main supplier: NORTH DESOTO WATER SYSTEM · 7,608 people · 2019
Highest in the ZIP: 10.38 µg/L — DESOTO PARISH WATER WORKS DISTRICT 1 · 7,173 people · 2019
2/2 SYR4
Monobromoacetic Acid
8.6255 µg/L
No EPA limit set
Main supplier: NORTH DESOTO WATER SYSTEM · 7,608 people · 2019
2/2 SYR4
Dibromoacetic Acid
5.102 µg/L
No EPA limit set
Main supplier: NORTH DESOTO WATER SYSTEM · 7,608 people · 2019
Highest in the ZIP: 8.42 µg/L — DESOTO PARISH WATER WORKS DISTRICT 1 · 7,173 people · 2019
2/2 SYR4
Bromoform
7.6785 µg/L
No EPA limit set
Main supplier: NORTH DESOTO WATER SYSTEM · 7,608 people · 2019
2/2 SYR4
Lead
3.6 µg/L 24%
of the EPA limit 15 µg/L
Main supplier: NORTH DESOTO WATER SYSTEM · 7,608 people · 2019
Highest in the ZIP: 7.4 µg/L — DESOTO PARISH WATER WORKS DISTRICT 1 · 7,173 people · 2019
2/2 SYR4
Gross Alpha, Excl. Radon And U
4.135 pCi/L 28%
of the EPA limit 15 pCi/L
Main supplier: NORTH DESOTO WATER SYSTEM · 7,608 people · 2019
1/2 SYR4
Gross Beta Particle Activity
3.84 pCi/L
No EPA limit set
Main supplier: NORTH DESOTO WATER SYSTEM · 7,608 people · 2019
Highest in the ZIP: 3.9875 pCi/L — DESOTO PARISH WATER WORKS DISTRICT 1 · 7,173 people · 2019
2/2 SYR4
Combined Radium (-226 And -228)
1.7456 pCi/L 35%
of the EPA limit 5 pCi/L
Main supplier: NORTH DESOTO WATER SYSTEM · 7,608 people · 2019
2/2 SYR4
Xylenes, Total
1.58 µg/L 0%
of the EPA limit 10000 µg/L
Highest in the ZIP: DESOTO PARISH WATER WORKS DISTRICT 1 · 7,173 people · 2019
1/2 SYR4
Arsenic
1 µg/L 10%
of the EPA limit 10 µg/L
Highest in the ZIP: DESOTO PARISH WATER WORKS DISTRICT 1 · 7,173 people · 2019
1/2 SYR4
Di(2-ethylhexyl) Phthalate
0.7070 µg/L 12%
of the EPA limit 6 µg/L
Main supplier: NORTH DESOTO WATER SYSTEM · 7,608 people · 2019
Highest in the ZIP: 0.8425 µg/L — DESOTO PARISH WATER WORKS DISTRICT 1 · 7,173 people · 2019
2/2 SYR4
Carbon Tetrachloride
0.5770 µg/L 12%
of the EPA limit 5 µg/L
Highest in the ZIP: DESOTO PARISH WATER WORKS DISTRICT 1 · 7,173 people · 2019
1/2 SYR4
Di(2-ethylhexyl) Adipate
0.5600 µg/L 0.1%
of the EPA limit 400 µg/L
Main supplier: NORTH DESOTO WATER SYSTEM · 7,608 people · 2019
1/2 SYR4
Ethylbenzene
0.5300 µg/L 0.1%
of the EPA limit 700 µg/L
Highest in the ZIP: DESOTO PARISH WATER WORKS DISTRICT 1 · 7,173 people · 2019
1/2 SYR4
Mercury
0.2495 µg/L 12%
of the EPA limit 2 µg/L
Main supplier: NORTH DESOTO WATER SYSTEM · 7,608 people · 2019
1/2 SYR4
Pfpea
0.0031 µg/L
No EPA limit set
Highest in the ZIP: DESOTO PARISH WATER WORKS DISTRICT 1 · 7,173 people · 2025
1/2 UCMR-5
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
Main supplier: NORTH DESOTO WATER SYSTEM · 7,608 people · 2025
Highest in the ZIP: 0.0020 mg/L — DESOTO PARISH WATER WORKS DISTRICT 1 · 7,173 people · 2024
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 71078

SupplierStatePopulation served
NORTH DESOTO WATER SYSTEM LA 7,608
DESOTO PARISH WATER WORKS DISTRICT 1 LA 7,173

Frequently asked questions about ZIP 71078 tap water

Is the tap water in ZIP 71078 safe to drink?

EPA testing detected 30 contaminants across the water suppliers serving ZIP 71078. 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 71078?

2 public water suppliers report EPA drinking-water monitoring for ZIP 71078. Each is listed above with its population served.

What contaminants are in ZIP 71078's water?

EPA monitoring detected Copper, Nitrate-Nitrite, Fluoride, Total Haloacetic Acids (HAA5), TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.