Tap WaterIndex

← Louisiana

Tap water quality report

Houma, LA

EPA monitoring detected 33 contaminants across the 2 water suppliers serving Houma. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

2
water suppliers
128,118
people served
33
contaminants found
Louisiana rankings Lead in Louisiana PFAS in Louisiana

What was found in Houma's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate-Nitrite
1700 µg/L 17%
of the EPA limit 10000 µg/L
 2/2 SYR4
Copper
1500 µg/L 115%
of the EPA limit, in the worst sample — 1300 µg/L
 2/2 SYR4
Fluoride
1100 µg/L 28%
of the EPA limit 4000 µg/L
 2/2 SYR4
Nitrate
330 µg/L 3.3%
of the EPA limit 10000 µg/L
 1/2 SYR4
TTHM
106.2 µg/L 133%
of the EPA limit, in the worst sample — 80 µg/L
 2/2 SYR4
Total Haloacetic Acids (HAA5)
96.8 µg/L 161%
of the EPA limit, in the worst sample — 60 µg/L
 2/2 SYR4
Chloroform
78.1 µg/L
No EPA limit set
 2/2 SYR4
Barium
68 µg/L 3.4%
of the EPA limit 2000 µg/L
 2/2 SYR4
Dichloroacetic Acid
45.5 µg/L
No EPA limit set
 2/2 SYR4
Trichloroacetic Acid
44.1 µg/L
No EPA limit set
 2/2 SYR4
Bromodichloromethane
33.4 µg/L
No EPA limit set
 2/2 SYR4
Dalapon
17.422 µg/L 8.7%
of the EPA limit 200 µg/L
 2/2 SYR4
Monochloroacetic Acid
15 µg/L
No EPA limit set
 2/2 SYR4
Dibromochloromethane
13.2 µg/L
No EPA limit set
 2/2 SYR4
Selenium
10 µg/L 20%
of the EPA limit 50 µg/L
 2/2 SYR4
Lithium
9.98 µg/L
No EPA limit set
 2/2 UCMR-5
Lead
8 µg/L 53%
of the EPA limit 15 µg/L
 2/2 SYR4
Cyanide
5.8 µg/L 2.9%
of the EPA limit 200 µg/L
 1/2 SYR4
Dibromoacetic Acid
4 µg/L
No EPA limit set
 2/2 SYR4
Monobromoacetic Acid
4 µg/L
No EPA limit set
 2/2 SYR4
Gross Beta Particle Activity
3.73 pCi/L
No EPA limit set
 2/2 SYR4
Bromoform
1.8 µg/L
No EPA limit set
 2/2 SYR4
Antimony, Total
1 µg/L 17%
of the EPA limit 6 µg/L
 1/2 SYR4
Arsenic
1 µg/L 10%
of the EPA limit 10 µg/L
 2/2 SYR4
Di(2-ethylhexyl) Phthalate
1 µg/L 17%
of the EPA limit 6 µg/L
 2/2 SYR4
Combined Radium (-226 And -228)
0.8290 pCi/L 17%
of the EPA limit 5 pCi/L
 2/2 SYR4
Atrazine
0.6500 µg/L 22%
of the EPA limit 3 µg/L
 2/2 SYR4
2,4-D
0.1300 µg/L 0.2%
of the EPA limit 70 µg/L
 1/2 SYR4
Pfba
0.0080 µg/L
No EPA limit set
 2/2 UCMR-5
Endrin
0.0054 µg/L 0.3%
of the EPA limit 2 µg/L
 1/2 SYR4
Pfpea
0.0037 µg/L
No EPA limit set
 1/2 UCMR-5
Pfhxa
0.0032 µg/L
No EPA limit set
 1/2 UCMR-5
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
 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 single worst sample on record — 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 Houma

SupplierPopulation served
SCHRIEVER WATER TREATMENT SERVICE AREA 116,460
HOUMA WATER TREATMENT SERVICE AREA 11,658

Frequently asked questions about Houma tap water

Is Houma tap water safe to drink?

EPA testing detected 33 contaminants in the water serving Houma. 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 Houma?

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

What contaminants are in Houma's water?

The contaminants EPA monitoring detected in Houma include Nitrate-Nitrite, Copper, Fluoride, Nitrate, TTHM. The full list, with the highest level found 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.