Is City of Santa Rosa Tap Water Safe? Quality Report

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.

165

health-based violations

354

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	2026-01-01 → 2026-03-31
MCL	Health-based	Resolved	2026-01-01 → 2026-03-31
MCL	Health-based	Resolved	2026-01-01 → 2026-03-31
MCL	Health-based	Resolved	2025-10-01 → 2025-12-31
MCL	Health-based	Resolved	2025-10-01 → 2025-12-31
MCL	Health-based	Resolved	2025-10-01 → 2025-12-31
MCL	Health-based	Resolved	2025-10-01 → 2025-12-31
MCL	Health-based	Resolved	2025-07-01 → 2025-09-30
MCL	Health-based	Resolved	2025-07-01 → 2025-09-30
MCL	Health-based	Resolved	2025-07-01 → 2025-09-30

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Chlorite	1550 µg/L 155% of the EPA limit, in the worst sample — 1000 µg/L	224/234	SYR4	2012–2019
Copper	596 µg/L 46% of the EPA limit 1300 µg/L	46/46	SYR4	2012–2017
Bromodichloromethane	17 µg/L No EPA limit set	40/40	SYR4	2012–2019
Bromoform	34.3 µg/L No EPA limit set	40/40	SYR4	2012–2019
Dibromochloromethane	26.7 µg/L No EPA limit set	40/40	SYR4	2012–2019
Chloroform	8.5 µg/L No EPA limit set	39/40	SYR4	2012–2019
Lead	22 µg/L 147% of the EPA limit, in the worst sample — 15 µg/L	33/46	SYR4	2012–2017
Dibromoacetic Acid	23.8 µg/L No EPA limit set	32/32	SYR4	2012–2019
TTHM	75.7 µg/L 95% of the EPA limit 80 µg/L	32/32	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	34.9 µg/L 58% of the EPA limit 60 µg/L	32/32	SYR4	2012–2019
Dichloroacetic Acid	8 µg/L No EPA limit set	31/32	SYR4	2012–2019
Nitrate	310 µg/L 3.1% of the EPA limit 10000 µg/L	18/18	SYR4	2012–2019
Trichloroacetic Acid	3.3 µg/L No EPA limit set	18/32	SYR4	2012–2019
Monobromoacetic Acid	4.9 µg/L No EPA limit set	12/32	SYR4	2012–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	10/10	LCR	2026
Barium	147 µg/L 7.4% of the EPA limit 2000 µg/L	8/8	SYR4	2012–2019
Fluoride	440 µg/L 11% of the EPA limit 4000 µg/L	8/8	SYR4	2012–2019
Selenium	5.6 µg/L 11% of the EPA limit 50 µg/L	6/8	SYR4	2012–2019
Arsenic	2.4 µg/L 24% of the EPA limit 10 µg/L	3/8	SYR4	2012–2019
Cyanide	50 µg/L 25% of the EPA limit 200 µg/L	3/8	SYR4	2012–2019
Monochloroacetic Acid	3.2 µg/L No EPA limit set	2/32	SYR4	2012–2019
Antimony, Total	0.6460 µg/L 11% of the EPA limit 6 µg/L	1/8	SYR4	2012–2019
Chromium	0.8430 µg/L 0.8% of the EPA limit 100 µg/L	1/8	SYR4	2012–2019
Combined Radium (-226 And -228)	1.5 pCi/L 30% of the EPA limit 5 pCi/L	1/1	SYR4	2015
Gross Beta Particle Activity	7.3 pCi/L No EPA limit set	1/1	SYR4	2015
Nitrite	20 µg/L 2% of the EPA limit 1000 µg/L	1/1	SYR4	2013
Thallium, Total	0.4200 µg/L 21% of the EPA limit 2 µg/L	1/8	SYR4	2012–2019

52 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-DAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneGross Alpha, Excl. Radon And UHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: QUIROGA, JAIME
Phone: 956-636-1113
Email: sbadillo@cityofsantarosatx.com

Frequently asked questions about City of Santa Rosa

Is City of Santa Rosa tap water safe to drink?

EPA monitoring detected 27 contaminants in City of Santa Rosa'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 Santa Rosa'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 Santa Rosa serve?

City of Santa Rosa reports serving 2,883 people in Texas, per its EPA record.

Has City of Santa Rosa had any water quality violations?

The EPA has 354 violations on file for City of Santa Rosa, of which 165 are health-based (a contaminant limit or required treatment was breached) and 16 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.