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.
168
health-based violations
185
violations on file
0
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| MCL | Health-based | Resolved | 2019-10-01 → 2019-12-31 |
| MCL | Health-based | Resolved | 2019-10-01 → 2019-12-31 |
| MCL | Health-based | Resolved | 2019-10-01 → 2019-12-31 |
| MCL | Health-based | Resolved | 2019-10-01 → 2019-12-31 |
| MCL | Health-based | Resolved | 2019-07-01 → 2019-09-30 |
| MCL | Health-based | Resolved | 2019-07-01 → 2019-09-30 |
| MCL | Health-based | Resolved | 2019-07-01 → 2019-09-30 |
| MCL | Health-based | Resolved | 2019-07-01 → 2019-09-30 |
| TT | Health-based | Resolved | 2016-08-01 → 2016-08-31 |
| TT | Health-based | Resolved | 2016-08-01 → 2016-08-31 |
PFAS detected
PFAS are industrial “forever chemicals”. These are the EPA's latest
nationwide test results (2023–2025).
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 | 23.49 µg/L No EPA limit set
worst single sample: 34.3 µg/L | 139/139 | SYR4 | 2012–2019 |
| Chloroform | 90.575 µg/L No EPA limit set
worst single sample: 99.3 µg/L | 138/139 | SYR4 | 2012–2019 |
| TTHM | 115.32 µg/L 144% of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 135.1 µg/L | 129/129 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 31.95 µg/L No EPA limit set
worst single sample: 48 µg/L | 126/128 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 74.475 µg/L 124% of the EPA limit, at the 95th percentile of samples — 60 µg/L
worst single sample: 85.9 µg/L | 126/128 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 40.75 µg/L No EPA limit set
worst single sample: 56.9 µg/L | 126/128 | SYR4 | 2012–2019 |
| Dibromochloromethane | 7.58 µg/L No EPA limit set
worst single sample: 8.97 µg/L | 125/139 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 9.1 µg/L No EPA limit set
worst single sample: 12.1 µg/L | 71/128 | SYR4 | 2012–2019 |
| Copper | 710 µg/L 55% of the EPA limit 1300 µg/L
worst single sample: 900 µg/L | 59/65 | SYR4 | 2014–2019 |
| Lead | 2 µg/L 13% of the EPA limit 15 µg/L
worst single sample: 3 µg/L | 43/65 | SYR4 | 2014–2019 |
| Dibromoacetic Acid | 2 µg/L No EPA limit set
worst single sample: 2.3 µg/L | 40/128 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 2085 µg/L 21% of the EPA limit 10000 µg/L
worst single sample: 2100 µg/L | 24/30 | SYR4 | 2012–2019 |
| Fluoride | 860 µg/L 22% of the EPA limit 4000 µg/L
worst single sample: 1000 µg/L | 15/15 | SYR4 | 2012–2019 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L | 15/15 | LCR | 2023 |
| Arsenic | 3.35 µg/L 34% of the EPA limit 10 µg/L
worst single sample: 4 µg/L | 14/15 | SYR4 | 2012–2019 |
| Dalapon | 47.32 µg/L 24% of the EPA limit 200 µg/L
worst single sample: 47.9 µg/L | 11/20 | SYR4 | 2012–2019 |
| Monobromoacetic Acid | 6.535 µg/L No EPA limit set
worst single sample: 8.2 µg/L | 10/128 | SYR4 | 2012–2019 |
| Di(2-ethylhexyl) Phthalate | 1.1545 µg/L 19% of the EPA limit 6 µg/L
worst single sample: 1.27 µg/L | 8/18 | SYR4 | 2012–2019 |
| Combined Uranium | 1.49 µg/L 5% of the EPA limit 30 µg/L | 6/13 | SYR4 | 2012–2017 |
| Barium | 57.8 µg/L 2.9% of the EPA limit 2000 µg/L
worst single sample: 58 µg/L | 5/15 | SYR4 | 2012–2019 |
| Gross Beta Particle Activity | 4 pCi/L No EPA limit set | 5/16 | SYR4 | 2012–2019 |
| Carbon Tetrachloride | 1.03 µg/L 21% of the EPA limit 5 µg/L
worst single sample: 1.07 µg/L | 3/15 | SYR4 | 2012–2019 |
| Hexachlorocyclopentadiene | 0.0569 µg/L 0.1% of the EPA limit 50 µg/L
worst single sample: 0.0580 µg/L | 3/18 | SYR4 | 2012–2019 |
| Simazine | 0.7650 µg/L 19% of the EPA limit 4 µg/L
worst single sample: 0.7700 µg/L | 3/18 | SYR4 | 2012–2019 |
| Bromoform | 0.6430 µg/L No EPA limit set
worst single sample: 0.6500 µg/L | 2/139 | SYR4 | 2012–2019 |
| Lithium | 15.7 µg/L No EPA limit set | 2/4 | UCMR-5 | 2024 |
| Atrazine | 0.3500 µg/L 12% of the EPA limit 3 µg/L | 1/18 | SYR4 | 2012–2019 |
| Combined Radium (-226 And -228) | 0.9390 pCi/L 19% of the EPA limit 5 pCi/L | 1/5 | SYR4 | 2015–2019 |
| Selenium | 0.5800 µg/L 1.2% of the EPA limit 50 µg/L | 1/15 | SYR4 | 2012–2019 |
81 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-TP2,4-D4:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranChlordaneChromiumDichloromethaneDi(2-ethylhexyl) AdipateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateGross Alpha, Excl. Radon And UHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaOxamylPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Assumption Parish Ww District 1
Is Assumption Parish Ww District 1 tap water safe to drink?
EPA monitoring detected 31 contaminants in Assumption Parish Ww District 1'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 Assumption Parish Ww District 1's water?
EPA monitoring detected Bromodichloromethane, Chloroform, TTHM, Dichloroacetic Acid, Total Haloacetic Acids (HAA5), and others. The full list with the level and data source for each is above.
How many people does Assumption Parish Ww District 1 serve?
Assumption Parish Ww District 1 reports serving 21,366 people in Louisiana, per its EPA record.
Has Assumption Parish Ww District 1 had any water quality violations?
The EPA has 185 violations on file for Assumption Parish Ww District 1, of which 168 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.