Is Town of Zwolle Water Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Local government
Counties served: Sabine Parish

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.

258

health-based violations

290

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	2024-10-01 → 2024-12-31
MCL	Health-based	Resolved	2024-10-01 → 2024-12-31
MCL	Health-based	Resolved	2024-10-01 → 2024-12-31
MCL	Health-based	Resolved	2024-10-01 → 2024-12-31
MCL	Health-based	Resolved	2024-10-01 → 2024-12-31
MCL	Health-based	Resolved	2024-07-01 → 2024-09-30
MCL	Health-based	Resolved	2024-07-01 → 2024-09-30
MCL	Health-based	Resolved	2024-07-01 → 2024-09-30
MCL	Health-based	Resolved	2024-07-01 → 2024-09-30
MCL	Health-based	Resolved	2024-07-01 → 2024-09-30

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 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	37.25 µg/L No EPA limit set worst single sample: 40 µg/L	46/46	SYR4	2013–2019
Chloroform	58.375 µg/L No EPA limit set worst single sample: 71 µg/L	46/46	SYR4	2013–2019
Dichloroacetic Acid	25.6 µg/L No EPA limit set worst single sample: 29.3 µg/L	46/46	SYR4	2013–2019
TTHM	118.45 µg/L 148% of the EPA limit, at the 95th percentile of samples — 80 µg/L worst single sample: 132.1 µg/L	46/46	SYR4	2013–2019
Total Haloacetic Acids (HAA5)	55.5 µg/L 93% of the EPA limit 60 µg/L worst single sample: 69.8 µg/L	46/46	SYR4	2013–2019
Trichloroacetic Acid	20.8 µg/L No EPA limit set worst single sample: 34.6 µg/L	46/46	SYR4	2013–2019
Dibromochloromethane	21.07 µg/L No EPA limit set worst single sample: 22.7 µg/L	43/46	SYR4	2013–2019
Dibromoacetic Acid	6.8 µg/L No EPA limit set worst single sample: 7.3 µg/L	41/46	SYR4	2013–2019
Bromoform	2.76 µg/L No EPA limit set worst single sample: 3.2 µg/L	38/46	SYR4	2013–2019
Monochloroacetic Acid	3.455 µg/L No EPA limit set worst single sample: 8.3 µg/L	20/46	SYR4	2013–2019
Fluoride	3930 µg/L 98% of the EPA limit 4000 µg/L worst single sample: 4100 µg/L	18/18	SYR4	2014–2018
Lead	3.45 µg/L 23% of the EPA limit 15 µg/L worst single sample: 6 µg/L	18/37	SYR4	2013–2019
Copper	760 µg/L 58% of the EPA limit 1300 µg/L worst single sample: 900 µg/L	15/37	SYR4	2013–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	8/8	LCR	2024
Barium	34.7 µg/L 1.7% of the EPA limit 2000 µg/L worst single sample: 35 µg/L	7/14	SYR4	2014–2017
Di(2-ethylhexyl) Phthalate	1.23 µg/L 21% of the EPA limit 6 µg/L worst single sample: 1.32 µg/L	7/14	SYR4	2014–2017
Monobromoacetic Acid	14.75 µg/L No EPA limit set worst single sample: 15 µg/L	6/46	SYR4	2013–2019
Gross Beta Particle Activity	4.6115 pCi/L No EPA limit set worst single sample: 5 pCi/L	4/14	SYR4	2014–2017
Nitrate-Nitrite	37 µg/L 0.4% of the EPA limit 10000 µg/L	2/42	SYR4	2012–2019
Combined Radium (-226 And -228)	0.2460 pCi/L 4.9% of the EPA limit 5 pCi/L	1/7	SYR4	2017
Dalapon	0.7200 µg/L 0.4% of the EPA limit 200 µg/L	1/14	SYR4	2014–2017
Mercury	1 µg/L 50% of the EPA limit 2 µg/L	1/14	SYR4	2014–2017

58 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, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDi(2-ethylhexyl) AdipateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateGross Alpha, Excl. Radon And UHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMethoxychlorOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: FRAZIER, MARVIN
Phone: 318-645-6142
Email: [email protected]

Frequently asked questions about Town of Zwolle Water

Is Town of Zwolle Water tap water safe to drink?

EPA monitoring detected 22 contaminants in Town of Zwolle 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 Town of Zwolle Water's water?

EPA monitoring detected Bromodichloromethane, Chloroform, Dichloroacetic Acid, TTHM, Total Haloacetic Acids (HAA5), and others. The full list with the level and data source for each is above.

How many people does Town of Zwolle Water serve?

Town of Zwolle Water reports serving 2,520 people in Louisiana, per its EPA record.

Has Town of Zwolle Water had any water quality violations?

The EPA has 290 violations on file for Town of Zwolle Water, of which 258 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.