What was found in Mandeville'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 |
|---|---|---|---|
| Fluoride | 300 µg/L 7.5% of the EPA limit 4000 µg/L Main supplier: CITY OF MANDEVILLE WATER SUPPLY · 13,000 people · 2019
Highest in the city: 710 µg/L — UTILITIES INC - KINGSPOINT SUBDIVISION · 6,351 people · 2018 | 13/14 | SYR4 |
| Nitrate-Nitrite | 180 µg/L 1.8% of the EPA limit 10000 µg/L Main supplier: CITY OF MANDEVILLE WATER SUPPLY · 13,000 people · 2019
Highest in the city: 510 µg/L — UTILITIES INC - NORTH PARK WATER SUPPLY · 11,298 people · 2019 | 11/14 | SYR4 |
| Copper | 100 µg/L 7.7% of the EPA limit 1300 µg/L Main supplier: CITY OF MANDEVILLE WATER SUPPLY · 13,000 people · 2019
Highest in the city: 500 µg/L — PEARL PLANTATION TOWNHSE · 60 people · 2018 | 13/14 | SYR4 |
| Lead | 4 µg/L 27% of the EPA limit 15 µg/L Main supplier: CITY OF MANDEVILLE WATER SUPPLY · 13,000 people · 2019
Highest in the city: 64.2 µg/L — UTILITIES INC - KINGSPOINT SUBDIVISION · 6,351 people · 2019 | 14/14 | SYR4 |
| TTHM | 1.71 µg/L 2.1% of the EPA limit 80 µg/L Main supplier: CITY OF MANDEVILLE WATER SUPPLY · 13,000 people · 2019
Highest in the city: 60.605 µg/L — UTILITIES INC - QUAIL RIDGE SUBDIVISION · 1,563 people · 2019 | 14/14 | SYR4 |
| Barium | 54.95 µg/L 2.7% of the EPA limit 2000 µg/L Highest in the city: UTILITIES INC - KINGSPOINT SUBDIVISION · 6,351 people · 2018 | 4/14 | SYR4 |
| Chloroform | 1.71 µg/L No EPA limit set Main supplier: CITY OF MANDEVILLE WATER SUPPLY · 13,000 people · 2019
Highest in the city: 54.03 µg/L — UTILITIES INC - QUAIL RIDGE SUBDIVISION · 1,563 people · 2019 | 14/14 | SYR4 |
| Total Haloacetic Acids (HAA5) | 4.32 µg/L 7.2% of the EPA limit 60 µg/L Main supplier: CITY OF MANDEVILLE WATER SUPPLY · 13,000 people · 2019
Highest in the city: 36.13 µg/L — UTILITIES INC - QUAIL RIDGE SUBDIVISION · 1,563 people · 2019 | 14/14 | SYR4 |
| Dichloroacetic Acid | 2.13 µg/L No EPA limit set Main supplier: CITY OF MANDEVILLE WATER SUPPLY · 13,000 people · 2019
Highest in the city: 24.64 µg/L — UTILITIES INC - QUAIL RIDGE SUBDIVISION · 1,563 people · 2019 | 14/14 | SYR4 |
| Lithium | 14.6 µg/L No EPA limit set Main supplier: CITY OF MANDEVILLE WATER SUPPLY · 13,000 people · 2024
Highest in the city: 17.1 µg/L — UTILITIES INC - NORTH PARK WATER SUPPLY · 11,298 people · 2025 | 4/14 | UCMR-5 |
| Gross Beta Particle Activity | 16.8 pCi/L No EPA limit set Highest in the city: UTILITIES INC - GREEN BRIER WATER SUPPLY · 2,250 people · 2017 | 4/14 | SYR4 |
| Bromodichloromethane | 11.86 µg/L No EPA limit set Highest in the city: UTILITIES INC - MAGNOLIA FOREST SUBD · 1,635 people · 2019 | 12/14 | SYR4 |
| Trichloroacetic Acid | 11.04 µg/L No EPA limit set Highest in the city: UTILITIES INC - KINGSPOINT SUBDIVISION · 6,351 people · 2019 | 13/14 | SYR4 |
| Chromium | 10 µg/L 10% of the EPA limit 100 µg/L Highest in the city: UTILITIES INC - WOODRIDGE SUBDIVISION · 1,590 people · 2017 | 2/14 | SYR4 |
| Dibromoacetic Acid | 1 µg/L No EPA limit set Main supplier: CITY OF MANDEVILLE WATER SUPPLY · 13,000 people · 2019
Highest in the city: 7.654 µg/L — UTILITIES INC - BEAU VILLAGE · 165 people · 2019 | 12/14 | SYR4 |
| Dalapon | 2.7038 µg/L 1.4% of the EPA limit 200 µg/L Main supplier: CITY OF MANDEVILLE WATER SUPPLY · 13,000 people · 2019
Highest in the city: 6.258 µg/L — UTILITIES INC - BEAU VILLAGE · 165 people · 2019 | 3/14 | SYR4 |
| Monobromoacetic Acid | 6 µg/L No EPA limit set Main supplier: CITY OF MANDEVILLE WATER SUPPLY · 13,000 people · 2019 | 4/14 | SYR4 |
| Dibromochloromethane | 5.6415 µg/L No EPA limit set Highest in the city: UTILITIES INC - BEAU VILLAGE · 165 people · 2019 | 12/14 | SYR4 |
| Xylenes, Total | 5.17 µg/L 0.1% of the EPA limit 10000 µg/L Main supplier: CITY OF MANDEVILLE WATER SUPPLY · 13,000 people · 2019 | 1/14 | SYR4 |
| Monochloroacetic Acid | 3.2 µg/L No EPA limit set Main supplier: CITY OF MANDEVILLE WATER SUPPLY · 13,000 people · 2019
Highest in the city: 4.98 µg/L — UTILITIES INC - KINGSPOINT SUBDIVISION · 6,351 people · 2019 | 9/14 | SYR4 |
| Selenium | 3.5 µg/L 7% of the EPA limit 50 µg/L Highest in the city: UTILITIES INC - MAGNOLIA FOREST SUBD · 1,635 people · 2018 | 1/14 | SYR4 |
| Combined Radium (-226 And -228) | 0.3470 pCi/L 6.9% of the EPA limit 5 pCi/L Main supplier: CITY OF MANDEVILLE WATER SUPPLY · 13,000 people · 2019
Highest in the city: 2.7064 pCi/L — UTILITIES INC - MAGNOLIA FOREST SUBD · 1,635 people · 2018 | 8/14 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 1.0525 µg/L 18% of the EPA limit 6 µg/L Main supplier: CITY OF MANDEVILLE WATER SUPPLY · 13,000 people · 2017
Highest in the city: 2.0345 µg/L — UTILITIES INC - NORTH PARK WATER SUPPLY · 11,298 people · 2019 | 10/14 | SYR4 |
| Arsenic | 1 µg/L 10% of the EPA limit 10 µg/L Main supplier: CITY OF MANDEVILLE WATER SUPPLY · 13,000 people · 2019
Highest in the city: 2 µg/L — UTILITIES INC - NORTH PARK WATER SUPPLY · 11,298 people · 2019 | 6/14 | SYR4 |
| Bromoform | 1.828 µg/L No EPA limit set Highest in the city: UTILITIES INC - GREEN BRIER WATER SUPPLY · 2,250 people · 2019 | 5/14 | SYR4 |
| Asbestos | 1 MFL 14% of the EPA limit 7 MFL Main supplier: CITY OF MANDEVILLE WATER SUPPLY · 13,000 people · 2019 | 2/14 | SYR4 |
| Ethylbenzene | 0.9400 µg/L 0.1% of the EPA limit 700 µg/L Main supplier: CITY OF MANDEVILLE WATER SUPPLY · 13,000 people · 2019 | 1/14 | SYR4 |
| Hexachlorobenzene | 0.7610 µg/L 76% of the EPA limit 1 µg/L Highest in the city: UTILITIES INC - NORTH PARK WATER SUPPLY · 11,298 people · 2019 | 3/14 | SYR4 |
| Simazine | 0.6590 µg/L 16% of the EPA limit 4 µg/L Highest in the city: UTILITIES INC - MAGNOLIA FOREST SUBD · 1,635 people · 2018 | 1/14 | SYR4 |
| Pentachlorophenol | 0.1270 µg/L 13% of the EPA limit 1 µg/L Main supplier: CITY OF MANDEVILLE WATER SUPPLY · 13,000 people · 2019 | 1/14 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: CITY OF MANDEVILLE WATER SUPPLY · 13,000 people · 2023
Highest in the city: 0.0030 mg/L — UTILITIES INC - BEAU VILLAGE · 165 people · 2023 | 14/14 | 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 Mandeville
| Supplier | Population served |
|---|---|
| CITY OF MANDEVILLE WATER SUPPLY | 13,000 |
| UTILITIES INC - NORTH PARK WATER SUPPLY | 11,298 |
| UTILITIES INC - KINGSPOINT SUBDIVISION | 6,351 |
| BEAU CHENE WATER SYSTEM | 4,650 |
| UTILITIES INC - LAKE VILLAGE SD | 2,724 |
| UTILITIES INC - GREEN BRIER WATER SUPPLY | 2,250 |
| UTILITIES INC - HUNTWYCK VILLAGE | 2,088 |
| UTILITIES INC - MAGNOLIA FOREST SUBD | 1,635 |
| UTILITIES INC - WOODRIDGE SUBDIVISION | 1,590 |
| UTILITIES INC - QUAIL RIDGE SUBDIVISION | 1,563 |
| UTILITIES INC - OAKMONT SUBD | 612 |
| UTILITIES INC - BEAU VILLAGE | 165 |
| PEARL PLANTATION TOWNHSE | 60 |
| MADISONVILLE ON THE LAKE | 51 |
Frequently asked questions about Mandeville tap water
Is Mandeville tap water safe to drink?
EPA testing detected 31 contaminants in the water serving Mandeville. 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 Mandeville?
14 public water suppliers report drinking-water monitoring for Mandeville, Louisiana to the EPA. Each is listed above with its population served.
What contaminants are in Mandeville's water?
The contaminants EPA monitoring detected in Mandeville include Fluoride, Nitrate-Nitrite, Copper, Lead, 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.