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.
0
health-based violations
38
violations on file
3
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| RPT | Monitoring | Unaddressed | 2025-07-02 |
| Other | Monitoring | Unaddressed | 2025-07-01 |
| Other | Monitoring | Resolved | 2024-07-26 |
| Other | Monitoring | Resolved | 2024-07-26 |
| Other | Monitoring | Unaddressed | 2024-06-23 |
| MR | Monitoring | Resolved | 2023-07-01 → 2023-12-31 |
| MR | Monitoring | Resolved | 2023-07-01 → 2023-12-31 |
| MR | Monitoring | Resolved | 2023-07-01 → 2023-12-31 |
| MR | Monitoring | Resolved | 2023-07-01 → 2023-12-31 |
| MR | Monitoring | Resolved | 2023-01-01 → 2023-06-30 |
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 |
|---|---|---|---|---|
| Nitrate | 696 µg/L 7% of the EPA limit 10000 µg/L
worst single sample: 759 µg/L | 84/92 | SYR4 | 2012–2019 |
| Dibromochloromethane | 9.1175 µg/L No EPA limit set
worst single sample: 11.5 µg/L | 66/97 | SYR4 | 2012–2019 |
| Copper | 344 µg/L 26% of the EPA limit 1300 µg/L
worst single sample: 1700 µg/L | 65/68 | SYR4 | 2013–2019 |
| Bromodichloromethane | 11.495 µg/L No EPA limit set
worst single sample: 13.6 µg/L | 64/97 | SYR4 | 2012–2019 |
| Chloroform | 11.925 µg/L No EPA limit set
worst single sample: 19.4 µg/L | 64/97 | SYR4 | 2012–2019 |
| Bromoform | 4.49 µg/L No EPA limit set
worst single sample: 9.53 µg/L | 62/97 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 11.85 µg/L 20% of the EPA limit 60 µg/L
worst single sample: 16.7 µg/L | 51/62 | SYR4 | 2012–2019 |
| TTHM | 36.775 µg/L 46% of the EPA limit 80 µg/L
worst single sample: 43.4 µg/L | 48/64 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 7.21 µg/L No EPA limit set
worst single sample: 12.1 µg/L | 44/62 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 4.12 µg/L No EPA limit set
worst single sample: 4.6 µg/L | 33/62 | SYR4 | 2012–2019 |
| Lead | 98.13 µg/L 654% of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 390 µg/L | 19/68 | SYR4 | 2013–2019 |
| Trichloroacetic Acid | 3.23 µg/L No EPA limit set
worst single sample: 3.4 µg/L | 18/62 | SYR4 | 2012–2019 |
| Lead | 0.0017 mg/L 11% of the EPA limit 0.0150 mg/L | 16/16 | LCR | 2023 |
| Atrazine | 0.2070 µg/L 6.9% of the EPA limit 3 µg/L
worst single sample: 0.2200 µg/L | 14/35 | SYR4 | 2012–2019 |
| Barium | 47.8 µg/L 2.4% of the EPA limit 2000 µg/L
worst single sample: 49 µg/L | 13/13 | SYR4 | 2014–2019 |
| Fluoride | 798.8 µg/L 20% of the EPA limit 4000 µg/L
worst single sample: 872 µg/L | 13/13 | SYR4 | 2012–2018 |
| Monochloroacetic Acid | 4.245 µg/L No EPA limit set
worst single sample: 4.3 µg/L | 12/62 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 621.4 µg/L 6.2% of the EPA limit 10000 µg/L
worst single sample: 738 µg/L | 12/14 | SYR4 | 2012–2019 |
| Lithium | 41 µg/L No EPA limit set | 12/18 | UCMR-5 | 2023 |
| Monobromoacetic Acid | 1.88 µg/L No EPA limit set
worst single sample: 2 µg/L | 9/62 | SYR4 | 2012–2019 |
| Cyanide | 132.4 µg/L 66% of the EPA limit 200 µg/L
worst single sample: 138 µg/L | 8/12 | SYR4 | 2014–2017 |
| Chromium | 3.8 µg/L 3.8% of the EPA limit 100 µg/L
worst single sample: 4.5 µg/L | 8/13 | SYR4 | 2014–2019 |
| Xylenes, Total | 38.416 µg/L 0.4% of the EPA limit 10000 µg/L
worst single sample: 47.7 µg/L | 5/43 | SYR4 | 2012–2019 |
| Simazine | 0.0900 µg/L 2.3% of the EPA limit 4 µg/L | 3/35 | SYR4 | 2012–2019 |
| Nitrite | 34.45 µg/L 3.4% of the EPA limit 1000 µg/L
worst single sample: 35 µg/L | 2/15 | SYR4 | 2012–2019 |
| Combined Radium (-226 And -228) | 1.5 pCi/L 30% of the EPA limit 5 pCi/L | 1/1 | SYR4 | 2015 |
| Di(2-ethylhexyl) Phthalate | 0.7000 µg/L 12% of the EPA limit 6 µg/L | 1/35 | SYR4 | 2012–2019 |
| Ethylbenzene | 5.96 µg/L 0.9% of the EPA limit 700 µg/L | 1/43 | SYR4 | 2012–2019 |
| Gross Beta Particle Activity | 4.4 pCi/L No EPA limit set | 1/7 | SYR4 | 2014–2017 |
| Selenium | 1.1 µg/L 2.2% of the EPA limit 50 µg/L | 1/13 | SYR4 | 2014–2019 |
75 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAsbestosBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebEthylene DibromideEndrinGross Alpha, Excl. Radon And UHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaOxamylPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Argyle Wsc
Is Argyle Wsc tap water safe to drink?
EPA monitoring detected 34 contaminants in Argyle Wsc'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 Argyle Wsc's water?
EPA monitoring detected Nitrate, Dibromochloromethane, Copper, Bromodichloromethane, Chloroform, and others. The full list with the level and data source for each is above.
How many people does Argyle Wsc serve?
Argyle Wsc reports serving 12,720 people in Texas, per its EPA record.
Has Argyle Wsc had any water quality violations?
The EPA has 38 violations on file for Argyle Wsc, of which 0 are health-based (a contaminant limit or required treatment was breached) and 3 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.