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.
128
health-based violations
163
violations on file
0
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| MCL | Health-based | Resolved | 2010-11-01 → 2010-11-30 |
| MCL | Health-based | Resolved | 2010-11-01 → 2010-11-30 |
| MCL | Health-based | Resolved | 2010-11-01 → 2010-11-30 |
| MCL | Health-based | Resolved | 2010-11-01 → 2010-11-30 |
| MCL | Health-based | Resolved | 2010-11-01 → 2010-11-30 |
| MCL | Health-based | Resolved | 2010-05-01 → 2010-05-31 |
| MCL | Health-based | Resolved | 2010-05-01 → 2010-05-31 |
| MCL | Health-based | Resolved | 2010-05-01 → 2010-05-31 |
| MCL | Health-based | Resolved | 2010-05-01 → 2010-05-31 |
| MCL | Health-based | Resolved | 2005-09-01 → 2005-09-30 |
Other contaminants detected
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 this
system's samples — over 100% is worth reading, but is not by itself a
violation. Where a single sample came in higher than that percentile, it
is noted under the bar. Formal violations are listed separately.
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Bromodichloromethane | 16.9 µg/L No EPA limit set
worst single sample: 20.6 µg/L | 146/146 | SYR4 | 2012–2019 |
| Chloroform | 64.86 µg/L No EPA limit set
worst single sample: 73 µg/L | 145/146 | SYR4 | 2012–2019 |
| TTHM | 79.91 µg/L 100% of the EPA limit 80 µg/L
worst single sample: 92.6 µg/L | 144/144 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 60.68 µg/L 101% of the EPA limit, at the 95th percentile of samples — 60 µg/L
worst single sample: 92.9 µg/L | 144/144 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 29.67 µg/L No EPA limit set
worst single sample: 33.2 µg/L | 142/142 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 31.9 µg/L No EPA limit set
worst single sample: 64 µg/L | 142/143 | SYR4 | 2012–2019 |
| Dibromochloromethane | 6.43 µg/L No EPA limit set
worst single sample: 41 µg/L | 139/147 | SYR4 | 2012–2019 |
| Copper | 660 µg/L 51% of the EPA limit 1300 µg/L
worst single sample: 900 µg/L | 89/95 | SYR4 | 2013–2019 |
| Monochloroacetic Acid | 3.37 µg/L No EPA limit set
worst single sample: 4.9 µg/L | 87/144 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 1.97 µg/L No EPA limit set
worst single sample: 3.3 µg/L | 83/145 | SYR4 | 2012–2019 |
| Lead | 4.35 µg/L 29% of the EPA limit 15 µg/L
worst single sample: 16 µg/L | 34/95 | SYR4 | 2013–2019 |
| Monobromoacetic Acid | 10.3 µg/L No EPA limit set
worst single sample: 13 µg/L | 19/146 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 2100 µg/L 21% of the EPA limit 10000 µg/L | 16/16 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 14/14 | LCR | 2025 |
| Arsenic | 1.795 µg/L 18% of the EPA limit 10 µg/L
worst single sample: 1.9 µg/L | 8/8 | SYR4 | 2012–2019 |
| Fluoride | 719.5 µg/L 18% of the EPA limit 4000 µg/L
worst single sample: 730 µg/L | 8/8 | SYR4 | 2012–2019 |
| Di(2-ethylhexyl) Phthalate | 3.1275 µg/L 52% of the EPA limit 6 µg/L
worst single sample: 3.74 µg/L | 6/16 | SYR4 | 2012–2019 |
| Barium | 63 µg/L 3.2% of the EPA limit 2000 µg/L
worst single sample: 65 µg/L | 5/8 | SYR4 | 2012–2019 |
| Dalapon | 33.828 µg/L 17% of the EPA limit 200 µg/L
worst single sample: 34.24 µg/L | 5/14 | SYR4 | 2012–2019 |
| Gross Beta Particle Activity | 2.245 pCi/L No EPA limit set
worst single sample: 2.26 pCi/L | 4/8 | SYR4 | 2012–2019 |
| Atrazine | 0.3980 µg/L 13% of the EPA limit 3 µg/L
worst single sample: 0.4000 µg/L | 3/16 | SYR4 | 2012–2019 |
| Combined Uranium | 1.451 µg/L 4.8% of the EPA limit 30 µg/L
worst single sample: 1.49 µg/L | 3/6 | SYR4 | 2012–2017 |
| Simazine | 0.7980 µg/L 20% of the EPA limit 4 µg/L
worst single sample: 0.8100 µg/L | 3/16 | SYR4 | 2012–2019 |
| Combined Radium (-226 And -228) | 0.2416 pCi/L 4.8% of the EPA limit 5 pCi/L
worst single sample: 0.2470 pCi/L | 2/5 | SYR4 | 2015–2019 |
| Selenium | 0.7615 µg/L 1.5% of the EPA limit 50 µg/L
worst single sample: 0.7700 µg/L | 2/8 | SYR4 | 2012–2019 |
| 2,4-D | 0.4500 µg/L 0.6% of the EPA limit 70 µg/L | 1/14 | SYR4 | 2012–2019 |
| Bromoform | 0.5500 µg/L No EPA limit set | 1/149 | SYR4 | 2012–2019 |
| Carbon Tetrachloride | 1.14 µg/L 23% of the EPA limit 5 µg/L | 1/8 | SYR4 | 2012–2019 |
| Hexachlorocyclopentadiene | 0.0300 µg/L 0.1% of the EPA limit 50 µg/L | 1/16 | SYR4 | 2012–2019 |
| Lithium | 10.2 µg/L No EPA limit set | 1/4 | UCMR-5 | 2025 |
82 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranChlordaneChromiumDichloromethaneDi(2-ethylhexyl) AdipateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateGross Alpha, Excl. Radon And UHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Thibodaux Waterworks
Is Thibodaux Waterworks tap water safe to drink?
EPA monitoring detected 30 contaminants in Thibodaux Waterworks'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 Thibodaux Waterworks's water?
EPA monitoring detected Bromodichloromethane, Chloroform, TTHM, Total Haloacetic Acids (HAA5), Dichloroacetic Acid, and others. The full list with the level and data source for each is above.
How many people does Thibodaux Waterworks serve?
Thibodaux Waterworks reports serving 14,862 people in Louisiana, per its EPA record.
Has Thibodaux Waterworks had any water quality violations?
The EPA has 163 violations on file for Thibodaux Waterworks, of which 128 are health-based (a contaminant limit or required treatment was breached) and 0 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.