Is Coronado Shores Water Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Local government
Counties served: Briscoe

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
TT	Health-based	Resolved	2024-10-17
TT	Health-based	Resolved	2024-10-17
TT	Health-based	Resolved	2024-10-17
TT	Health-based	Resolved	2024-10-17
Other	Monitoring	Resolved	2025-05-01
Other	Monitoring	Resolved	2025-05-01
RPT	Monitoring	Resolved	2024-10-17
RPT	Monitoring	Resolved	2024-10-17
RPT	Monitoring	Resolved	2024-10-17
RPT	Monitoring	Resolved	2024-10-17

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
Nitrate	46.5 µg/L 0.5% of the EPA limit 10000 µg/L	16/16	SYR4	2012–2019
Copper	45.145 µg/L 3.5% of the EPA limit 1300 µg/L worst single sample: 67.7 µg/L	14/17	SYR4	2012–2018
Bromoform	14.067 µg/L No EPA limit set worst single sample: 17.4 µg/L	7/8	SYR4	2012–2019
Dibromochloromethane	6.774 µg/L No EPA limit set worst single sample: 6.9 µg/L	4/8	SYR4	2012–2019
Fluoride	2738.5 µg/L 68% of the EPA limit 4000 µg/L worst single sample: 2740 µg/L	4/4	SYR4	2012–2019
Lead	2.027 µg/L 14% of the EPA limit 15 µg/L worst single sample: 2.12 µg/L	4/17	SYR4	2012–2018
Barium	14.81 µg/L 0.7% of the EPA limit 2000 µg/L worst single sample: 14.9 µg/L	3/3	SYR4	2012–2019
Bromodichloromethane	3.116 µg/L No EPA limit set worst single sample: 3.3 µg/L	3/8	SYR4	2012–2019
Nitrate-Nitrite	38.4 µg/L 0.4% of the EPA limit 10000 µg/L worst single sample: 40 µg/L	3/3	SYR4	2012–2015
Chromium	6.225 µg/L 6.2% of the EPA limit 100 µg/L worst single sample: 6.4 µg/L	2/3	SYR4	2012–2019
Combined Radium (-226 And -228)	1.0735 pCi/L 21% of the EPA limit 5 pCi/L worst single sample: 1.08 pCi/L	2/3	SYR4	2013–2019
Combined Uranium	2.8 µg/L 9.3% of the EPA limit 30 µg/L	2/2	SYR4	2016–2019
Di(2-ethylhexyl) Phthalate	0.6900 µg/L 12% of the EPA limit 6 µg/L worst single sample: 0.7000 µg/L	2/7	SYR4	2014–2019
Dibromoacetic Acid	3.11 µg/L No EPA limit set worst single sample: 3.2 µg/L	2/2	SYR4	2016–2019
Gross Alpha, Excl. Radon And U	6.95 pCi/L 46% of the EPA limit 15 pCi/L worst single sample: 7 pCi/L	2/2	SYR4	2016–2019
Gross Beta Particle Activity	4.57 pCi/L No EPA limit set worst single sample: 4.6 pCi/L	2/3	SYR4	2013–2019
TTHM	9.786 µg/L 12% of the EPA limit 80 µg/L worst single sample: 9.97 µg/L	2/2	SYR4	2016–2019
Total Haloacetic Acids (HAA5)	8.62 µg/L 14% of the EPA limit 60 µg/L worst single sample: 9 µg/L	2/2	SYR4	2016–2019
Arsenic	3 µg/L 30% of the EPA limit 10 µg/L	1/3	SYR4	2012–2019
Bhc-Gamma	0.0300 µg/L 15% of the EPA limit 0.2000 µg/L	1/7	SYR4	2014–2019
Cyanide	11 µg/L 5.5% of the EPA limit 200 µg/L	1/2	SYR4	2014–2017
Chloroform	1.8 µg/L No EPA limit set	1/8	SYR4	2012–2019
Endrin	0.0400 µg/L 2% of the EPA limit 2 µg/L	1/7	SYR4	2014–2019
Heptachlor Epoxide	0.1000 µg/L 50% of the EPA limit 0.2000 µg/L	1/7	SYR4	2014–2019
Lead	0.00073 mg/L 4.9% of the EPA limit 0.0150 mg/L	1/1	LCR	2024
Monochloroacetic Acid	5.8 µg/L No EPA limit set	1/2	SYR4	2016–2019
Selenium	10.8 µg/L 22% of the EPA limit 50 µg/L	1/3	SYR4	2012–2019
Xylenes, Total	1.13 µg/L 0% of the EPA limit 10000 µg/L	1/6	SYR4	2012–2019

51 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, TotalAsbestosAtrazineBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDichloroacetic AcidDinosebEthylene DibromideEthylbenzeneHexachlorobenzeneHeptachlorHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNitriteOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroacetic AcidTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: JOHNSON, JEFFREY
Phone: 806-633-4326
Email: wateroperator@midplains.coop

Frequently asked questions about Coronado Shores Water

Is Coronado Shores Water tap water safe to drink?

EPA monitoring detected 28 contaminants in Coronado Shores Water'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 Coronado Shores Water's water?

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

How many people does Coronado Shores Water serve?

Coronado Shores Water reports serving 85 people in Texas, per its EPA record.

Has Coronado Shores Water had any water quality violations?

The EPA has 49 violations on file for Coronado Shores Water, of which 4 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.