Is City of Marion Tap Water Safe? Quality Report

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

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	2019-01-01 → 2019-03-31
MCL	Health-based	Resolved	2019-01-01 → 2019-03-31
MCL	Health-based	Resolved	2019-01-01 → 2019-03-31
MCL	Health-based	Resolved	2019-01-01 → 2019-03-31
RPT	Monitoring	Unaddressed	2025-07-02
MR	Monitoring	Resolved	2025-07-01 → 2025-09-30
MR	Monitoring	Resolved	2025-07-01 → 2025-09-30
MR	Monitoring	Resolved	2025-07-01 → 2025-09-30
Other	Monitoring	Resolved	2021-10-02
Other	Monitoring	Resolved	2021-10-02

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	28.035 µg/L No EPA limit set worst single sample: 39.1 µg/L	52/52	SYR4	2012–2019
Dibromochloromethane	20.225 µg/L No EPA limit set worst single sample: 27.3 µg/L	52/52	SYR4	2012–2019
Bromoform	9.105 µg/L No EPA limit set worst single sample: 12.5 µg/L	50/52	SYR4	2012–2019
Chloroform	31.3 µg/L No EPA limit set worst single sample: 45.9 µg/L	48/52	SYR4	2012–2019
TTHM	83.22 µg/L 104% of the EPA limit, at the 95th percentile of samples — 80 µg/L worst single sample: 104 µg/L	47/47	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	34.14 µg/L 57% of the EPA limit 60 µg/L worst single sample: 74.2 µg/L	47/47	SYR4	2012–2019
Dibromoacetic Acid	8.16 µg/L No EPA limit set worst single sample: 10 µg/L	45/47	SYR4	2012–2019
Dichloroacetic Acid	18.98 µg/L No EPA limit set worst single sample: 46.3 µg/L	43/47	SYR4	2012–2019
Copper	287.7 µg/L 22% of the EPA limit 1300 µg/L worst single sample: 373 µg/L	32/33	SYR4	2015–2019
Nitrate	1946 µg/L 19% of the EPA limit 10000 µg/L worst single sample: 1990 µg/L	32/32	SYR4	2012–2019
Trichloroacetic Acid	6.23 µg/L No EPA limit set worst single sample: 12.5 µg/L	27/47	SYR4	2012–2019
Lead	2.85 µg/L 19% of the EPA limit 15 µg/L worst single sample: 14.1 µg/L	23/33	SYR4	2015–2019
Monochloroacetic Acid	9.325 µg/L No EPA limit set worst single sample: 11.8 µg/L	12/47	SYR4	2012–2019
Lead	0.0050 mg/L 33% of the EPA limit 0.0150 mg/L	8/8	LCR	2025
Monobromoacetic Acid	4.35 µg/L No EPA limit set worst single sample: 4.7 µg/L	6/47	SYR4	2012–2019
Nitrate-Nitrite	1820 µg/L 18% of the EPA limit 10000 µg/L worst single sample: 1910 µg/L	6/6	SYR4	2012–2015
Fluoride	239 µg/L 6% of the EPA limit 4000 µg/L worst single sample: 240 µg/L	3/3	SYR4	2012–2018
Barium	50.075 µg/L 2.5% of the EPA limit 2000 µg/L worst single sample: 50.4 µg/L	2/2	SYR4	2015–2018
Combined Radium (-226 And -228)	1.5 pCi/L 30% of the EPA limit 5 pCi/L	1/1	SYR4	2015
Dalapon	1.2 µg/L 0.6% of the EPA limit 200 µg/L	1/47	SYR4	2012–2019

59 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, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneGross Alpha, Excl. Radon And UGross Beta Particle ActivityHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: LOYOLA, DANIEL, H
Phone: 830-914-2391
Email: [email protected]

Frequently asked questions about City of Marion

Is City of Marion tap water safe to drink?

EPA monitoring detected 20 contaminants in City of Marion'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 Marion's water?

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

How many people does City of Marion serve?

City of Marion reports serving 1,971 people in Texas, per its EPA record.

Has City of Marion had any water quality violations?

The EPA has 36 violations on file for City of Marion, of which 4 are health-based (a contaminant limit or required treatment was breached) and 1 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.