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.
824
health-based violations
829
violations on file
2
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| MCL | Health-based | Archived | 2026-01-01 → 2026-03-31 |
| MCL | Health-based | Archived | 2026-01-01 → 2026-03-31 |
| MCL | Health-based | Archived | 2026-01-01 → 2026-03-31 |
| MCL | Health-based | Archived | 2026-01-01 → 2026-03-31 |
| MCL | Health-based | Archived | 2026-01-01 → 2026-03-31 |
| MCL | Health-based | Archived | 2026-01-01 → 2026-03-31 |
| MCL | Health-based | Archived | 2026-01-01 → 2026-03-31 |
| MCL | Health-based | Archived | 2026-01-01 → 2026-03-31 |
| MCL | Health-based | Archived | 2026-01-01 → 2026-03-31 |
| MCL | Health-based | Archived | 2026-01-01 → 2026-03-31 |
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 |
|---|---|---|---|---|
| Arsenic | 28.64 µg/L 286% of the EPA limit, at the 95th percentile of samples — 10 µg/L
worst single sample: 32 µg/L | 99/102 | SYR4 | 2012–2019 |
| Copper | 190 µg/L 15% of the EPA limit 1300 µg/L
worst single sample: 280 µg/L | 61/68 | SYR4 | 2013–2019 |
| Nitrate | 90 µg/L 0.9% of the EPA limit 10000 µg/L
worst single sample: 110 µg/L | 60/64 | SYR4 | 2012–2019 |
| Bromoform | 4.9 µg/L No EPA limit set
worst single sample: 5.83 µg/L | 31/32 | SYR4 | 2013–2019 |
| Dibromochloromethane | 14.855 µg/L No EPA limit set
worst single sample: 15.1 µg/L | 30/32 | SYR4 | 2013–2019 |
| Bromodichloromethane | 13.5 µg/L No EPA limit set
worst single sample: 14.3 µg/L | 17/32 | SYR4 | 2013–2019 |
| Fluoride | 3148 µg/L 79% of the EPA limit 4000 µg/L
worst single sample: 3160 µg/L | 13/13 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 13/13 | LCR | 2025 |
| Chloroform | 9.246 µg/L No EPA limit set
worst single sample: 9.84 µg/L | 12/32 | SYR4 | 2013–2019 |
| TTHM | 41.585 µg/L 52% of the EPA limit 80 µg/L
worst single sample: 41.9 µg/L | 10/10 | SYR4 | 2013–2019 |
| Barium | 184 µg/L 9.2% of the EPA limit 2000 µg/L
worst single sample: 200 µg/L | 9/9 | SYR4 | 2014–2019 |
| Nitrate-Nitrite | 103 µg/L 1% of the EPA limit 10000 µg/L
worst single sample: 110 µg/L | 8/8 | SYR4 | 2012–2015 |
| Dibromoacetic Acid | 2.6 µg/L No EPA limit set
worst single sample: 2.8 µg/L | 6/10 | SYR4 | 2013–2019 |
| Total Haloacetic Acids (HAA5) | 7.8 µg/L 13% of the EPA limit 60 µg/L
worst single sample: 9.3 µg/L | 6/10 | SYR4 | 2013–2019 |
| Lead | 16.56 µg/L 110% of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 20 µg/L | 5/68 | SYR4 | 2013–2019 |
| Chromium | 3.925 µg/L 3.9% of the EPA limit 100 µg/L
worst single sample: 4 µg/L | 4/9 | SYR4 | 2014–2019 |
| Lithium | 325 µg/L No EPA limit set | 4/4 | UCMR-5 | 2023 |
| Gross Beta Particle Activity | 9.86 pCi/L No EPA limit set
worst single sample: 10 pCi/L | 3/4 | SYR4 | 2016 |
| Selenium | 4.145 µg/L 8.3% of the EPA limit 50 µg/L
worst single sample: 4.2 µg/L | 2/9 | SYR4 | 2014–2019 |
| Xylenes, Total | 0.8800 µg/L 0% of the EPA limit 10000 µg/L
worst single sample: 0.9000 µg/L | 2/22 | SYR4 | 2015–2019 |
| Combined Radium (-226 And -228) | 1.5 pCi/L 30% of the EPA limit 5 pCi/L | 1/1 | SYR4 | 2016 |
| Dichloroacetic Acid | 3.7 µg/L No EPA limit set | 1/10 | SYR4 | 2013–2019 |
| Monochloroacetic Acid | 2.3 µg/L No EPA limit set | 1/10 | SYR4 | 2013–2019 |
| Trichloroacetic Acid | 2.8 µg/L No EPA limit set | 1/10 | SYR4 | 2013–2019 |
85 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, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneGross Alpha, Excl. Radon And UHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Tri County Sud
Is Tri County Sud tap water safe to drink?
EPA monitoring detected 24 contaminants in Tri County Sud'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 Tri County Sud's water?
EPA monitoring detected Arsenic, Copper, Nitrate, Bromoform, Dibromochloromethane, and others. The full list with the level and data source for each is above.
How many people does Tri County Sud serve?
Tri County Sud reports serving 5,353 people in Texas, per its EPA record.
Has Tri County Sud had any water quality violations?
The EPA has 829 violations on file for Tri County Sud, of which 824 are health-based (a contaminant limit or required treatment was breached) and 2 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.