Water Quality: Rio Hondo, TX
3 water systems • 29,349 people served
Multiple Health ViolationsWater Quality Summary
Rio Hondo is served by 3 public water systems with a combined service population of 29,349 people, and has 381 EPA Safe Drinking Water Act violations on record. Critically, 115 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Rio Hondo's violation count is 79% above the national average for Texas. Contaminants associated with violations include Bromate, Contaminant 1008, E. coli, Stage 2 DBP, TTHM.
Contaminants Found
Probable human carcinogen that increases the risk of kidney and thyroid cancers.
Common source: Ozonation of bromide-containing water; used as flour improver
EPA limit: 0.010 mg/L (10 ppb)
Causes gastrointestinal illness; certain strains (e.g., O157:H7) can cause severe kidney failure and death.
Common source: Fecal contamination from humans or animals entering the water supply
EPA limit: Zero (no E. coli permitted in drinking water)
Trihalomethanes and haloacetic acids that increase cancer risk and may cause adverse reproductive outcomes.
Common source: Chlorine disinfection reacting with natural organic matter in source water
EPA limit: TTHM: 0.080 mg/L; HAA5: 0.060 mg/L
Total trihalomethanes are linked to increased risk of bladder cancer and adverse reproductive outcomes.
Common source: Reaction of chlorine disinfectants with naturally occurring organic matter in water
EPA limit: 0.080 mg/L (80 ppb)
Haloacetic acids are associated with increased cancer risk and potential reproductive and developmental effects.
Common source: Reaction of chlorine disinfectants with organic matter in treated water
EPA limit: 0.060 mg/L (60 ppb)
Water Systems Serving Rio Hondo
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| EAST RIO HONDO WSC | TX0310096 | Surface Water | 24,756 | 5 |
| CITY OF RIO HONDO | TX0310006 | Surface Water | 2,640 | 374 |
| EAST RIO HONDO WSC ARROYO CITY | TX0310031 | Surface Water | 1,953 | 2 |
Concerned About Your Water?
A home water filter can remove common contaminants. NSF-certified filters are tested against EPA standards.
Consider a reverse osmosis system for comprehensive filtration or a carbon filter for basic improvement.
Other Cities in Texas
Data Sources
Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). Data includes all recorded violations for active community water systems.