Compliance record
Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.
| Violation | Type | Status | Period |
|---|---|---|---|
| TT | Health-based | Unaddressed | 2014-08-19 |
| TT | Health-based | Unaddressed | 2014-08-19 |
| TT | Health-based | Unaddressed | 2014-08-19 |
| MCL | Health-based | Archived | 2011-02-01 → 2011-02-28 |
| MCL | Health-based | Archived | 2011-02-01 → 2011-02-28 |
| MCL | Health-based | Archived | 2011-02-01 → 2011-02-28 |
| MCL | Health-based | Archived | 2009-12-01 → 2009-12-31 |
| MCL | Health-based | Archived | 2009-12-01 → 2009-12-31 |
| MCL | Health-based | Archived | 2009-12-01 → 2009-12-31 |
| MCL | Health-based | Archived | 2008-02-01 → 2008-02-29 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Copper | 300 µg/L 23% of the EPA limit 1300 µg/L | 20/35 | SYR4 | 2013–2019 |
| Lead | 18 µg/L 120% of the EPA limit, in the worst sample — 15 µg/L | 14/35 | SYR4 | 2013–2019 |
| Lead | 0.0070 mg/L 47% of the EPA limit 0.0150 mg/L | 9/9 | LCR | 2025 |
| Chloroform | 1.7 µg/L No EPA limit set | 8/12 | SYR4 | 2013–2019 |
| TTHM | 9.4 µg/L 12% of the EPA limit 80 µg/L | 8/12 | SYR4 | 2013–2019 |
| Fluoride | 300 µg/L 7.5% of the EPA limit 4000 µg/L | 5/7 | SYR4 | 2012–2018 |
| Dibromoacetic Acid | 1.4 µg/L No EPA limit set | 4/12 | SYR4 | 2013–2019 |
| Dichloroacetic Acid | 1.6 µg/L No EPA limit set | 4/12 | SYR4 | 2013–2019 |
| Nitrate-Nitrite | 35 µg/L 0.4% of the EPA limit 10000 µg/L | 4/38 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 3.7 µg/L 6.2% of the EPA limit 60 µg/L | 4/12 | SYR4 | 2013–2019 |
| Trichloroacetic Acid | 0.7100 µg/L No EPA limit set | 4/12 | SYR4 | 2013–2019 |
| Bromodichloromethane | 1.9 µg/L No EPA limit set | 3/12 | SYR4 | 2013–2019 |
| Dibromochloromethane | 3.8 µg/L No EPA limit set | 3/12 | SYR4 | 2013–2019 |
| Barium | 18 µg/L 0.9% of the EPA limit 2000 µg/L | 2/7 | SYR4 | 2012–2018 |
| Di(2-ethylhexyl) Phthalate | 0.7100 µg/L 12% of the EPA limit 6 µg/L | 2/7 | SYR4 | 2012–2018 |
| Bromoform | 2 µg/L No EPA limit set | 1/12 | SYR4 | 2013–2019 |
| Combined Radium (-226 And -228) | 0.7280 pCi/L 15% of the EPA limit 5 pCi/L | 1/5 | SYR4 | 2015–2018 |
| Gross Beta Particle Activity | 2.18 pCi/L No EPA limit set | 1/7 | SYR4 | 2012–2018 |
62 contaminants tested, none detected
Utility contact
Frequently asked questions about St Tammany Water District 3
Is St Tammany Water District 3 tap water safe to drink?
EPA monitoring detected 18 contaminants in St Tammany Water District 3's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.
What contaminants were detected in St Tammany Water District 3's water?
EPA monitoring detected Copper, Lead, Lead, Chloroform, TTHM, and others. The full list with the level and data source for each is above.
How many people does St Tammany Water District 3 serve?
St Tammany Water District 3 reports serving 2,920 people in Louisiana, per its EPA record.
Has St Tammany Water District 3 had any water quality violations?
The EPA has 99 violations on file for St Tammany Water District 3, of which 39 are health-based (a contaminant limit or required treatment was breached) and 6 remain open. The rest are monitoring or reporting failures.
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.