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Tap water quality report

Zachary, LA

EPA monitoring detected 19 contaminants across the 2 water suppliers serving Zachary. 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.

2
water suppliers
31,869
people served
19
contaminants found
Louisiana rankings Lead in Louisiana PFAS in Louisiana

What was found in Zachary'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
Nitrate-Nitrite
100 µg/L 1%
of the EPA limit 10000 µg/L
Main supplier: ZACHARY WATER SYSTEM · 31,569 people · 2019
Highest in the city: 500 µg/L — J E S T C · 300 people · 2019
2/2 SYR4
Fluoride
400 µg/L 10%
of the EPA limit 4000 µg/L
Main supplier: ZACHARY WATER SYSTEM · 31,569 people · 2019
2/2 SYR4
Copper
200 µg/L 15%
of the EPA limit 1300 µg/L
Main supplier: ZACHARY WATER SYSTEM · 31,569 people · 2019
2/2 SYR4
TTHM
19.98 µg/L 25%
of the EPA limit 80 µg/L
Main supplier: ZACHARY WATER SYSTEM · 31,569 people · 2019
Highest in the city: 44.465 µg/L — J E S T C · 300 people · 2019
2/2 SYR4
Lithium
18.9 µg/L
No EPA limit set
Main supplier: ZACHARY WATER SYSTEM · 31,569 people · 2023
1/2 UCMR-5
Chloroform
9.875 µg/L
No EPA limit set
Main supplier: ZACHARY WATER SYSTEM · 31,569 people · 2019
Highest in the city: 18.231 µg/L — J E S T C · 300 people · 2019
2/2 SYR4
Bromodichloromethane
6.1 µg/L
No EPA limit set
Main supplier: ZACHARY WATER SYSTEM · 31,569 people · 2019
Highest in the city: 13.425 µg/L — J E S T C · 300 people · 2019
2/2 SYR4
Barium
12 µg/L 0.6%
of the EPA limit 2000 µg/L
Main supplier: ZACHARY WATER SYSTEM · 31,569 people · 2019
2/2 SYR4
Dibromochloromethane
4.445 µg/L
No EPA limit set
Main supplier: ZACHARY WATER SYSTEM · 31,569 people · 2019
Highest in the city: 10.8785 µg/L — J E S T C · 300 people · 2019
2/2 SYR4
Total Haloacetic Acids (HAA5)
7.3 µg/L 12%
of the EPA limit 60 µg/L
Main supplier: ZACHARY WATER SYSTEM · 31,569 people · 2019
Highest in the city: 9.15 µg/L — J E S T C · 300 people · 2019
2/2 SYR4
Monochloroacetic Acid
7.02 µg/L
No EPA limit set
Main supplier: ZACHARY WATER SYSTEM · 31,569 people · 2019
1/2 SYR4
Lead
3.45 µg/L 23%
of the EPA limit 15 µg/L
Main supplier: ZACHARY WATER SYSTEM · 31,569 people · 2019
Highest in the city: 6.85 µg/L — J E S T C · 300 people · 2019
2/2 SYR4
Dichloroacetic Acid
3.9 µg/L
No EPA limit set
Main supplier: ZACHARY WATER SYSTEM · 31,569 people · 2019
Highest in the city: 4.45 µg/L — J E S T C · 300 people · 2019
2/2 SYR4
Dibromoacetic Acid
1.225 µg/L
No EPA limit set
Main supplier: ZACHARY WATER SYSTEM · 31,569 people · 2019
Highest in the city: 3.4 µg/L — J E S T C · 300 people · 2019
2/2 SYR4
Trichloroacetic Acid
2.6 µg/L
No EPA limit set
Main supplier: ZACHARY WATER SYSTEM · 31,569 people · 2019
2/2 SYR4
Bromoform
1.875 µg/L
No EPA limit set
Main supplier: ZACHARY WATER SYSTEM · 31,569 people · 2019
Highest in the city: 1.995 µg/L — J E S T C · 300 people · 2019
2/2 SYR4
Di(2-ethylhexyl) Phthalate
1.1555 µg/L 19%
of the EPA limit 6 µg/L
Main supplier: ZACHARY WATER SYSTEM · 31,569 people · 2019
2/2 SYR4
Combined Radium (-226 And -228)
0.6570 pCi/L 13%
of the EPA limit 5 pCi/L
Main supplier: ZACHARY WATER SYSTEM · 31,569 people · 2019
1/2 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: ZACHARY WATER SYSTEM · 31,569 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 Zachary

SupplierPopulation served
ZACHARY WATER SYSTEM 31,569
J E S T C 300

Frequently asked questions about Zachary tap water

Is Zachary tap water safe to drink?

EPA testing detected 19 contaminants in the water serving Zachary. 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 Zachary?

2 public water suppliers report drinking-water monitoring for Zachary, Louisiana to the EPA. Each is listed above with its population served.

What contaminants are in Zachary's water?

The contaminants EPA monitoring detected in Zachary include Nitrate-Nitrite, Fluoride, Copper, TTHM, Lithium. 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.