What was found in Oak Grove'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.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Copper | 300 µg/L 23% of the EPA limit 1300 µg/L Main supplier: TOWN OF OAK GROVE WATER SYSTEM · 2,955 people · 2019
Highest in the city: 1305 µg/L — FISKE UNION WATER SYSTEM · 1,830 people · 2019 | 3/3 | SYR4 |
| Nitrate-Nitrite | 1000 µg/L 10% of the EPA limit 10000 µg/L Main supplier: TOWN OF OAK GROVE WATER SYSTEM · 2,955 people · 2019 | 3/3 | SYR4 |
| Barium | 790 µg/L 40% of the EPA limit 2000 µg/L Main supplier: TOWN OF OAK GROVE WATER SYSTEM · 2,955 people · 2019 | 3/3 | SYR4 |
| Fluoride | 295 µg/L 7.4% of the EPA limit 4000 µg/L Main supplier: TOWN OF OAK GROVE WATER SYSTEM · 2,955 people · 2019
Highest in the city: 447.5 µg/L — FISKE UNION WATER SYSTEM · 1,830 people · 2019 | 3/3 | SYR4 |
| TTHM | 35.42 µg/L 44% of the EPA limit 80 µg/L Main supplier: TOWN OF OAK GROVE WATER SYSTEM · 2,955 people · 2019
Highest in the city: 53.57 µg/L — GOODWILL WATER SYSTEM · 1,929 people · 2019 | 3/3 | SYR4 |
| Lead | 23.2 µg/L 155% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: TOWN OF OAK GROVE WATER SYSTEM · 2,955 people · 2019 | 3/3 | SYR4 |
| Dibromochloromethane | 15.275 µg/L No EPA limit set Main supplier: TOWN OF OAK GROVE WATER SYSTEM · 2,955 people · 2019
Highest in the city: 20.995 µg/L — GOODWILL WATER SYSTEM · 1,929 people · 2019 | 3/3 | SYR4 |
| Bromodichloromethane | 9.5 µg/L No EPA limit set Main supplier: TOWN OF OAK GROVE WATER SYSTEM · 2,955 people · 2019
Highest in the city: 17.395 µg/L — GOODWILL WATER SYSTEM · 1,929 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 9.13 µg/L 15% of the EPA limit 60 µg/L Main supplier: TOWN OF OAK GROVE WATER SYSTEM · 2,955 people · 2019
Highest in the city: 15.724 µg/L — GOODWILL WATER SYSTEM · 1,929 people · 2019 | 3/3 | SYR4 |
| Bromoform | 12.34 µg/L No EPA limit set Main supplier: TOWN OF OAK GROVE WATER SYSTEM · 2,955 people · 2019 | 3/3 | SYR4 |
| Chloroform | 4.1575 µg/L No EPA limit set Main supplier: TOWN OF OAK GROVE WATER SYSTEM · 2,955 people · 2019
Highest in the city: 10.1 µg/L — GOODWILL WATER SYSTEM · 1,929 people · 2019 | 3/3 | SYR4 |
| Dibromoacetic Acid | 5.8365 µg/L No EPA limit set Main supplier: TOWN OF OAK GROVE WATER SYSTEM · 2,955 people · 2019
Highest in the city: 8.57 µg/L — GOODWILL WATER SYSTEM · 1,929 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 2.9 µg/L No EPA limit set Main supplier: TOWN OF OAK GROVE WATER SYSTEM · 2,955 people · 2019
Highest in the city: 7.35 µg/L — GOODWILL WATER SYSTEM · 1,929 people · 2019 | 3/3 | SYR4 |
| Dalapon | 6.905 µg/L 3.5% of the EPA limit 200 µg/L Main supplier: TOWN OF OAK GROVE WATER SYSTEM · 2,955 people · 2019 | 1/3 | SYR4 |
| Gross Beta Particle Activity | 5.885 pCi/L No EPA limit set Main supplier: TOWN OF OAK GROVE WATER SYSTEM · 2,955 people · 2019 | 3/3 | SYR4 |
| Gross Alpha, Excl. Radon And U | 5.2755 pCi/L 35% of the EPA limit 15 pCi/L Main supplier: TOWN OF OAK GROVE WATER SYSTEM · 2,955 people · 2019 | 2/3 | SYR4 |
| Combined Radium (-226 And -228) | 4.9765 pCi/L 100% of the EPA limit 5 pCi/L Main supplier: TOWN OF OAK GROVE WATER SYSTEM · 2,955 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 1.68 µg/L No EPA limit set Main supplier: TOWN OF OAK GROVE WATER SYSTEM · 2,955 people · 2019
Highest in the city: 4 µg/L — GOODWILL WATER SYSTEM · 1,929 people · 2019 | 3/3 | SYR4 |
| Monobromoacetic Acid | 3.4 µg/L No EPA limit set Highest in the city: GOODWILL WATER SYSTEM · 1,929 people · 2019 | 2/3 | SYR4 |
| Monochloroacetic Acid | 1.095 µg/L No EPA limit set Main supplier: TOWN OF OAK GROVE WATER SYSTEM · 2,955 people · 2019
Highest in the city: 1.995 µg/L — GOODWILL WATER SYSTEM · 1,929 people · 2019 | 2/3 | SYR4 |
| Selenium | 1.9 µg/L 3.8% of the EPA limit 50 µg/L Highest in the city: FISKE UNION WATER SYSTEM · 1,830 people · 2019 | 1/3 | SYR4 |
| Xylenes, Total | 1.9 µg/L 0% of the EPA limit 10000 µg/L Main supplier: TOWN OF OAK GROVE WATER SYSTEM · 2,955 people · 2019 | 1/3 | SYR4 |
| 1,2-Dichloroethane | 1.8 µg/L 36% of the EPA limit 5 µg/L Highest in the city: GOODWILL WATER SYSTEM · 1,929 people · 2018 | 1/3 | SYR4 |
| Arsenic | 1 µg/L 10% of the EPA limit 10 µg/L Highest in the city: GOODWILL WATER SYSTEM · 1,929 people · 2018 | 2/3 | SYR4 |
| Styrene | 0.8400 µg/L 0.8% of the EPA limit 100 µg/L Main supplier: TOWN OF OAK GROVE WATER SYSTEM · 2,955 people · 2019 | 1/3 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.8050 µg/L 13% of the EPA limit 6 µg/L Highest in the city: GOODWILL WATER SYSTEM · 1,929 people · 2018 | 2/3 | SYR4 |
| Di(2-ethylhexyl) Adipate | 0.5600 µg/L 0.1% of the EPA limit 400 µg/L Main supplier: TOWN OF OAK GROVE WATER SYSTEM · 2,955 people · 2019 | 1/3 | SYR4 |
| P-Dichlorobenzene | 0.3300 µg/L 0.4% of the EPA limit 75 µg/L Main supplier: TOWN OF OAK GROVE WATER SYSTEM · 2,955 people · 2019 | 1/3 | SYR4 |
| O-Dichlorobenzene | 0.2800 µg/L 0% of the EPA limit 600 µg/L Main supplier: TOWN OF OAK GROVE WATER SYSTEM · 2,955 people · 2019 | 1/3 | SYR4 |
| Lead | 0.0050 mg/L 33% of the EPA limit 0.0150 mg/L Main supplier: TOWN OF OAK GROVE WATER SYSTEM · 2,955 people · 2024 | 3/3 | 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 Oak Grove
| Supplier | Population served |
|---|---|
| TOWN OF OAK GROVE WATER SYSTEM | 2,955 |
| GOODWILL WATER SYSTEM | 1,929 |
| FISKE UNION WATER SYSTEM | 1,830 |
Frequently asked questions about Oak Grove tap water
Is Oak Grove tap water safe to drink?
EPA testing detected 30 contaminants in the water serving Oak Grove. 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 Oak Grove?
3 public water suppliers report drinking-water monitoring for Oak Grove, Louisiana to the EPA. Each is listed above with its population served.
What contaminants are in Oak Grove's water?
The contaminants EPA monitoring detected in Oak Grove include Copper, Nitrate-Nitrite, Barium, Fluoride, TTHM. 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.