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Tap water quality report

City of Rio Hondo

EPA monitoring tested this supplier for 79 contaminants and detected 26. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

79
contaminants tested
26
detected
2,640
people served
309
health-based violations
Texas rankingsLead in TexasPFAS in Texas
Water source
Surface water
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.

309
health-based violations
770
violations on file
30
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2025-01-01 → 2025-01-31
TT Health-based Resolved 2025-01-01 → 2025-01-31
TT Health-based Resolved 2025-01-01 → 2025-01-31
TT Health-based Resolved 2025-01-01 → 2025-01-31
TT Health-based Resolved 2025-01-01 → 2025-01-31
TT Health-based Resolved 2025-01-01 → 2025-01-31
TT Health-based Resolved 2025-01-01 → 2025-01-31
TT Health-based Resolved 2025-01-01 → 2025-01-31
TT Health-based Resolved 2025-01-01 → 2025-01-31
TT Health-based Resolved 2025-01-01 → 2025-01-31

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Chlorite
710 µg/L 71%
of the EPA limit 1000 µg/L
worst single sample: 990 µg/L
108/138 SYR4 2013–2019
Copper
417.75 µg/L 32%
of the EPA limit 1300 µg/L
worst single sample: 2000 µg/L
64/64 SYR4 2013–2017
Bromodichloromethane
71.455 µg/L
No EPA limit set
worst single sample: 77.2 µg/L
48/48 SYR4 2012–2019
Bromoform
35.475 µg/L
No EPA limit set
worst single sample: 41.2 µg/L
48/48 SYR4 2012–2019
Dibromochloromethane
63.265 µg/L
No EPA limit set
worst single sample: 71 µg/L
48/48 SYR4 2012–2019
TTHM
203.2 µg/L 254%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 214 µg/L
40/40 SYR4 2012–2019
Dibromoacetic Acid
25.48 µg/L
No EPA limit set
worst single sample: 28.4 µg/L
39/40 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
96.78 µg/L 161%
of the EPA limit, at the 95th percentile of samples — 60 µg/L
worst single sample: 121 µg/L
39/40 SYR4 2012–2019
Dichloroacetic Acid
61.44 µg/L
No EPA limit set
worst single sample: 75.5 µg/L
35/40 SYR4 2012–2019
Chloroform
60.76 µg/L
No EPA limit set
worst single sample: 74.4 µg/L
33/48 SYR4 2012–2019
Lead
4.18 µg/L 28%
of the EPA limit 15 µg/L
worst single sample: 5.4 µg/L
22/64 SYR4 2013–2017
Nitrate
210 µg/L 2.1%
of the EPA limit 10000 µg/L
 18/18 SYR4 2012–2019
Trichloroacetic Acid
25.81 µg/L
No EPA limit set
worst single sample: 27 µg/L
18/40 SYR4 2012–2019
Monobromoacetic Acid
3.84 µg/L
No EPA limit set
worst single sample: 3.9 µg/L
13/40 SYR4 2012–2019
Fluoride
442 µg/L 11%
of the EPA limit 4000 µg/L
worst single sample: 470 µg/L
8/8 SYR4 2012–2019
Monochloroacetic Acid
8.66 µg/L
No EPA limit set
worst single sample: 10.2 µg/L
8/40 SYR4 2012–2019
Barium
167.3 µg/L 8.4%
of the EPA limit 2000 µg/L
worst single sample: 173 µg/L
7/7 SYR4 2013–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 7/7 LCR 2023
Selenium
5.6 µg/L 11%
of the EPA limit 50 µg/L
worst single sample: 5.8 µg/L
6/7 SYR4 2013–2019
Arsenic
2.48 µg/L 25%
of the EPA limit 10 µg/L
worst single sample: 2.5 µg/L
3/7 SYR4 2013–2019
Dalapon
1.77 µg/L 0.9%
of the EPA limit 200 µg/L
worst single sample: 1.8 µg/L
3/42 SYR4 2013–2019
Gross Beta Particle Activity
9.4 pCi/L
No EPA limit set
worst single sample: 9.6 pCi/L
3/3 SYR4 2012–2018
Xylenes, Total
0.5950 µg/L 0%
of the EPA limit 10000 µg/L
worst single sample: 0.6000 µg/L
2/8 SYR4 2012–2019
Cyanide
10 µg/L 5%
of the EPA limit 200 µg/L
 1/6 SYR4 2014–2019
Combined Radium (-226 And -228)
4.9 pCi/L 98%
of the EPA limit 5 pCi/L
 1/1 SYR4 2012
Combined Uranium
1.1 µg/L 3.7%
of the EPA limit 30 µg/L
 1/2 SYR4 2015–2018
53 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneGross Alpha, Excl. Radon And UHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
OLIVARES, GUSTAVO
Phone
956-748-2102
Email
[email protected]

Frequently asked questions about City of Rio Hondo

Is City of Rio Hondo tap water safe to drink?

EPA monitoring detected 26 contaminants in City of Rio Hondo'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 City of Rio Hondo's water?

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

How many people does City of Rio Hondo serve?

City of Rio Hondo reports serving 2,640 people in Texas, per its EPA record.

Has City of Rio Hondo had any water quality violations?

The EPA has 770 violations on file for City of Rio Hondo, of which 309 are health-based (a contaminant limit or required treatment was breached) and 30 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.