Is Marlow Municipal Authority Tap Water Safe? Quality Report

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

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
MCL	Health-based	Resolved	1998-11-01 → 1998-11-30
MCL	Health-based	Resolved	1993-07-01 → 1993-07-31
RPT	Monitoring	Resolved	2024-10-17
RPT	Monitoring	Resolved	2024-10-17
MR	Monitoring	Resolved	2005-01-01 → 2007-12-31
MR	Monitoring	Resolved	2005-01-01 → 2007-12-31
MR	Monitoring	Resolved	2005-01-01 → 2007-12-31
MR	Monitoring	Resolved	2005-01-01 → 2007-12-31

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
Copper	174.211 µg/L 13% of the EPA limit 1300 µg/L worst single sample: 225 µg/L	59/60	SYR4	2012–2018
Nitrate-Nitrite	1985 µg/L 20% of the EPA limit 10000 µg/L worst single sample: 2040 µg/L	32/32	SYR4	2012–2019
Lead	3.24 µg/L 22% of the EPA limit 15 µg/L	18/60	SYR4	2012–2018
Lead	0.0022 mg/L 15% of the EPA limit 0.0150 mg/L	14/14	LCR	2024
Dibromochloromethane	15.82 µg/L No EPA limit set worst single sample: 17.7 µg/L	9/10	SYR4	2012–2019
Bromodichloromethane	12.959 µg/L No EPA limit set worst single sample: 14.9 µg/L	7/10	SYR4	2012–2019
Chloroform	5.469 µg/L No EPA limit set worst single sample: 6.27 µg/L	7/10	SYR4	2012–2019
TTHM	41.06 µg/L 51% of the EPA limit 80 µg/L worst single sample: 45.5 µg/L	7/8	SYR4	2012–2019
Barium	155 µg/L 7.8% of the EPA limit 2000 µg/L worst single sample: 162 µg/L	6/6	SYR4	2012–2018
Bromoform	6.515 µg/L No EPA limit set worst single sample: 6.62 µg/L	6/10	SYR4	2012–2019
Fluoride	442.5 µg/L 11% of the EPA limit 4000 µg/L worst single sample: 460 µg/L	6/6	SYR4	2012–2018
Arsenic	2.64 µg/L 26% of the EPA limit 10 µg/L worst single sample: 2.7 µg/L	5/8	SYR4	2012–2018
Combined Uranium	4.104 µg/L 14% of the EPA limit 30 µg/L worst single sample: 4.18 µg/L	5/5	SYR4	2012–2018
Gross Alpha, Excl. Radon And U	10.9 pCi/L 73% of the EPA limit 15 pCi/L worst single sample: 11.1 pCi/L	5/5	SYR4	2012–2018
Lithium	50.1 µg/L No EPA limit set	4/4	UCMR-5	2023
Chromium	3 µg/L 3% of the EPA limit 100 µg/L	3/6	SYR4	2012–2018
Combined Radium (-226 And -228)	1.1449 pCi/L 23% of the EPA limit 5 pCi/L worst single sample: 1.18 pCi/L	3/5	SYR4	2012–2018
Dichloroacetic Acid	3.171 µg/L No EPA limit set worst single sample: 3.3 µg/L	3/8	SYR4	2012–2019
Gross Beta Particle Activity	5.4943 pCi/L No EPA limit set worst single sample: 5.53 pCi/L	3/5	SYR4	2012–2018
Selenium	1.117 µg/L 2.2% of the EPA limit 50 µg/L worst single sample: 1.13 µg/L	3/6	SYR4	2012–2018
Total Haloacetic Acids (HAA5)	8.57 µg/L 14% of the EPA limit 60 µg/L worst single sample: 8.7 µg/L	3/8	SYR4	2012–2019
Dibromoacetic Acid	4.29 µg/L No EPA limit set worst single sample: 4.3 µg/L	2/8	SYR4	2012–2019
Monochloroacetic Acid	1.39 µg/L No EPA limit set	1/8	SYR4	2012–2019
Trichloroacetic Acid	1.04 µg/L No EPA limit set	1/8	SYR4	2012–2019

63 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAtrazineBenzeneBeryllium, TotalChlorobenzeneCadmiumCarbon TetrachlorideDichloromethaneDiquatEthylene DibromideEthylbenzeneGlyphosateHfpo-DaMercuryMonobromoacetic AcidNetfosaaNfdhaNmefosaaPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPicloramStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: MARLOW PWA
Phone: 580-658-5401
Email: [email protected]

Frequently asked questions about Marlow Municipal Authority

Is Marlow Municipal Authority tap water safe to drink?

EPA monitoring detected 24 contaminants in Marlow Municipal Authority'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 Marlow Municipal Authority's water?

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

How many people does Marlow Municipal Authority serve?

Marlow Municipal Authority reports serving 4,600 people in Oklahoma, per its EPA record.

Has Marlow Municipal Authority had any water quality violations?

The EPA has 21 violations on file for Marlow Municipal Authority, 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.