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.
7
health-based violations
13
violations on file
0
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| TT | Health-based | Resolved | 2016-11-01 |
| TT | Health-based | Resolved | 2016-11-01 |
| TT | Health-based | Resolved | 2016-11-01 |
| TT | Health-based | Resolved | 2016-11-01 |
| MCL | Health-based | Resolved | 1997-10-01 → 1997-12-31 |
| MCL | Health-based | Resolved | 1997-10-01 → 1997-12-31 |
| MCL | Health-based | Resolved | 1997-10-01 → 1997-12-31 |
| MR | Monitoring | Resolved | 2013-12-30 |
| Other | Monitoring | Resolved | 2008-07-01 |
| Other | Monitoring | Resolved | 2008-07-01 |
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 |
|---|---|---|---|---|
| Chlorite | 864.8 µg/L 86% of the EPA limit 1000 µg/L
worst single sample: 1040 µg/L | 234/252 | SYR4 | 2013–2019 |
| Bromodichloromethane | 14.04 µg/L No EPA limit set
worst single sample: 20.7 µg/L | 113/136 | SYR4 | 2012–2019 |
| Bromoform | 20.04 µg/L No EPA limit set
worst single sample: 54.4 µg/L | 113/136 | SYR4 | 2012–2019 |
| Dibromochloromethane | 18.66 µg/L No EPA limit set
worst single sample: 40.9 µg/L | 113/136 | SYR4 | 2012–2019 |
| Chloroform | 6.41 µg/L No EPA limit set
worst single sample: 15.6 µg/L | 110/136 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 29.375 µg/L 49% of the EPA limit 60 µg/L
worst single sample: 41.1 µg/L | 110/125 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 13.49 µg/L No EPA limit set
worst single sample: 20.3 µg/L | 108/125 | SYR4 | 2012–2019 |
| TTHM | 55.125 µg/L 69% of the EPA limit 80 µg/L
worst single sample: 121 µg/L | 102/125 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 12.12 µg/L No EPA limit set
worst single sample: 15.6 µg/L | 97/125 | SYR4 | 2012–2019 |
| Copper | 89.65 µg/L 6.9% of the EPA limit 1300 µg/L
worst single sample: 190 µg/L | 94/98 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 3.7 µg/L No EPA limit set
worst single sample: 15.8 µg/L | 80/125 | SYR4 | 2012–2019 |
| Nitrate | 358.5 µg/L 3.6% of the EPA limit 10000 µg/L
worst single sample: 370 µg/L | 64/66 | SYR4 | 2012–2019 |
| Monobromoacetic Acid | 8.66 µg/L No EPA limit set
worst single sample: 10.1 µg/L | 17/125 | SYR4 | 2012–2019 |
| Lead | 5.3115 µg/L 35% of the EPA limit 15 µg/L
worst single sample: 5.37 µg/L | 14/98 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 13/13 | LCR | 2025 |
| Fluoride | 515 µg/L 13% of the EPA limit 4000 µg/L
worst single sample: 550 µg/L | 11/11 | SYR4 | 2012–2019 |
| Barium | 165.85 µg/L 8.3% of the EPA limit 2000 µg/L
worst single sample: 169 µg/L | 10/10 | SYR4 | 2012–2019 |
| Lithium | 56.5 µg/L No EPA limit set | 10/10 | UCMR-5 | 2025 |
| Nitrate-Nitrite | 321 µg/L 3.2% of the EPA limit 10000 µg/L
worst single sample: 360 µg/L | 7/7 | SYR4 | 2012–2019 |
| Selenium | 4.69 µg/L 9.4% of the EPA limit 50 µg/L
worst single sample: 4.9 µg/L | 7/10 | SYR4 | 2012–2019 |
| Arsenic | 2.89 µg/L 29% of the EPA limit 10 µg/L
worst single sample: 3 µg/L | 6/10 | SYR4 | 2012–2019 |
| Cyanide | 162.5 µg/L 81% of the EPA limit 200 µg/L
worst single sample: 170 µg/L | 4/6 | SYR4 | 2014–2019 |
| Chromium | 1.418 µg/L 1.4% of the EPA limit 100 µg/L
worst single sample: 1.44 µg/L | 3/10 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 6.34 µg/L No EPA limit set
worst single sample: 6.6 µg/L | 3/125 | SYR4 | 2012–2019 |
| Nitrite | 82 µg/L 8.2% of the EPA limit 1000 µg/L
worst single sample: 90 µg/L | 3/10 | SYR4 | 2012–2019 |
| Thallium, Total | 0.3741 µg/L 19% of the EPA limit 2 µg/L
worst single sample: 0.4130 µg/L | 3/10 | SYR4 | 2012–2019 |
| Antimony, Total | 0.5323 µg/L 8.9% of the EPA limit 6 µg/L
worst single sample: 0.5490 µg/L | 2/10 | SYR4 | 2012–2019 |
| Gross Beta Particle Activity | 8.605 pCi/L No EPA limit set
worst single sample: 8.7 pCi/L | 2/4 | SYR4 | 2012–2018 |
| Atrazine | 0.1800 µg/L 6% of the EPA limit 3 µg/L | 1/11 | 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 | 1.4 µg/L 23% of the EPA limit 6 µg/L | 1/11 | SYR4 | 2012–2019 |
71 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-PF3ONSAdonaAsbestosBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebEthylene DibromideEndrinEthylbenzeneGross Alpha, Excl. Radon And UHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaOxamylPfdaPfdoaPfeesaPfhpsPfmbaPfmpaPFNAPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about East Rio Hondo Wsc
Is East Rio Hondo Wsc tap water safe to drink?
EPA monitoring detected 39 contaminants in East Rio Hondo 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 East Rio Hondo Wsc's water?
EPA monitoring detected Chlorite, Bromodichloromethane, Bromoform, Dibromochloromethane, Chloroform, and others. The full list with the level and data source for each is above.
How many people does East Rio Hondo Wsc serve?
East Rio Hondo Wsc reports serving 24,756 people in Texas, per its EPA record.
Has East Rio Hondo Wsc had any water quality violations?
The EPA has 13 violations on file for East Rio Hondo Wsc, of which 7 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.