Is East Rio Hondo Wsc Arroyo City Tap Water Safe? Quality Report

Water source: SWP
Ownership: Local government
Counties served: Cameron

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.

health-based violations

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	2011-09-01 → 2011-09-30
MCL	Health-based	Resolved	2011-09-01 → 2011-09-30
MCL	Health-based	Resolved	2011-09-01 → 2011-09-30
MCL	Health-based	Resolved	2011-09-01 → 2011-09-30
MCL	Health-based	Resolved	2005-01-01 → 2005-03-31
MCL	Health-based	Resolved	2005-01-01 → 2005-03-31
MCL	Health-based	Resolved	2005-01-01 → 2005-03-31
MCL	Health-based	Resolved	2005-01-01 → 2005-03-31
MR	Monitoring	Resolved	2011-10-01 → 2011-12-31
MR	Monitoring	Resolved	2011-10-01 → 2011-12-31

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
Bromodichloromethane	12.71 µg/L No EPA limit set worst single sample: 16.4 µg/L	27/27	SYR4	2012–2019
Bromoform	25.22 µg/L No EPA limit set worst single sample: 27.6 µg/L	27/27	SYR4	2012–2019
Chloroform	7.52 µg/L No EPA limit set worst single sample: 10.9 µg/L	27/27	SYR4	2012–2019
Dibromochloromethane	20.58 µg/L No EPA limit set worst single sample: 22.7 µg/L	27/27	SYR4	2012–2019
Dichloroacetic Acid	15.44 µg/L No EPA limit set worst single sample: 21.9 µg/L	27/27	SYR4	2012–2019
TTHM	59.45 µg/L 74% of the EPA limit 80 µg/L worst single sample: 61.8 µg/L	27/27	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	32.37 µg/L 54% of the EPA limit 60 µg/L worst single sample: 34.2 µg/L	27/27	SYR4	2012–2019
Dibromoacetic Acid	13.025 µg/L No EPA limit set worst single sample: 18 µg/L	26/27	SYR4	2012–2019
Trichloroacetic Acid	7.09 µg/L No EPA limit set worst single sample: 8.6 µg/L	24/27	SYR4	2012–2019
Copper	45 µg/L 3.5% of the EPA limit 1300 µg/L worst single sample: 64 µg/L	20/20	SYR4	2014–2017
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	6/6	LCR	2023
Monochloroacetic Acid	5.34 µg/L No EPA limit set worst single sample: 5.7 µg/L	4/27	SYR4	2012–2019
Lead	2.2 µg/L 15% of the EPA limit 15 µg/L	1/20	SYR4	2014–2017
Monobromoacetic Acid	9 µg/L No EPA limit set	1/27	SYR4	2012–2019

Utility contact

Contact: MIDDLETON JR, ROBERT, E
Phone: 956-748-3633

Frequently asked questions about East Rio Hondo Wsc Arroyo City

Is East Rio Hondo Wsc Arroyo City tap water safe to drink?

EPA monitoring detected 14 contaminants in East Rio Hondo Wsc Arroyo City'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 Arroyo City's water?

EPA monitoring detected Bromodichloromethane, Bromoform, Chloroform, Dibromochloromethane, Dichloroacetic Acid, and others. The full list with the level and data source for each is above.

How many people does East Rio Hondo Wsc Arroyo City serve?

East Rio Hondo Wsc Arroyo City reports serving 1,953 people in Texas, per its EPA record.

Has East Rio Hondo Wsc Arroyo City had any water quality violations?

The EPA has 40 violations on file for East Rio Hondo Wsc Arroyo City, of which 8 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.