Is Miami Tap Water Safe? Quality Report

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

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

319

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	1997-10-01 → 1997-10-31
MCL	Health-based	Resolved	1997-08-01 → 1997-08-31
MCL	Health-based	Resolved	1996-06-01 → 1996-06-30
MR	Monitoring	Resolved	2024-07-01 → 2024-09-30
MR	Monitoring	Resolved	2024-07-01 → 2024-09-30
MR	Monitoring	Resolved	2024-07-01 → 2024-09-30
MR	Monitoring	Resolved	2024-07-01 → 2024-09-30
MR	Monitoring	Resolved	2024-07-01 → 2024-09-30
MR	Monitoring	Resolved	2024-07-01 → 2024-09-30
MR	Monitoring	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
Copper	193.75 µg/L 15% of the EPA limit 1300 µg/L worst single sample: 1700 µg/L	56/94	SYR4	2013–2019
Dibromochloromethane	4.9475 µg/L No EPA limit set worst single sample: 14.01 µg/L	46/76	SYR4	2012–2019
TTHM	24.975 µg/L 31% of the EPA limit 80 µg/L worst single sample: 37.73 µg/L	46/73	SYR4	2012–2019
Bromoform	6.7 µg/L No EPA limit set worst single sample: 8.5 µg/L	41/76	SYR4	2012–2019
Bromodichloromethane	4.474 µg/L No EPA limit set worst single sample: 10.31 µg/L	29/75	SYR4	2012–2019
Combined Radium (-226 And -228)	5.405 pCi/L 108% of the EPA limit, at the 95th percentile of samples — 5 pCi/L worst single sample: 6.85 pCi/L	18/18	SYR4	2013–2019
Gross Alpha, Excl. Radon And U	8.952 pCi/L 60% of the EPA limit 15 pCi/L worst single sample: 12.8 pCi/L	17/18	SYR4	2013–2019
Chloroform	3.7325 µg/L No EPA limit set worst single sample: 5.36 µg/L	16/76	SYR4	2012–2019
Lead	0.0021 mg/L 14% of the EPA limit 0.0150 mg/L	14/14	LCR	2025
Total Haloacetic Acids (HAA5)	6.726 µg/L 11% of the EPA limit 60 µg/L worst single sample: 11.25 µg/L	14/73	SYR4	2012–2019
Gross Beta Particle Activity	7.356 pCi/L No EPA limit set worst single sample: 8.97 pCi/L	13/18	SYR4	2013–2019
Dibromoacetic Acid	2.761 µg/L No EPA limit set worst single sample: 3.08 µg/L	12/65	SYR4	2012–2019
Barium	37.95 µg/L 1.9% of the EPA limit 2000 µg/L worst single sample: 38.3 µg/L	8/8	SYR4	2012–2018
Dichloroacetic Acid	3.603 µg/L No EPA limit set worst single sample: 4.52 µg/L	8/65	SYR4	2012–2019
Lead	23.835 µg/L 159% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 29.4 µg/L	8/94	SYR4	2013–2019
Lithium	89.2 µg/L No EPA limit set	8/8	UCMR-5	2025
Fluoride	467 µg/L 12% of the EPA limit 4000 µg/L worst single sample: 470 µg/L	7/8	SYR4	2012–2018
Monochloroacetic Acid	4.25 µg/L No EPA limit set worst single sample: 4.73 µg/L	4/65	SYR4	2012–2019
Carbon Tetrachloride	0.6400 µg/L 13% of the EPA limit 5 µg/L	1/20	SYR4	2012–2018

84 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitrate-NitritePfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: MIAMI
Phone: 918-542-9251
Email: [email protected]

Frequently asked questions about Miami

Is Miami tap water safe to drink?

EPA monitoring detected 19 contaminants in Miami'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 Miami's water?

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

How many people does Miami serve?

Miami reports serving 13,704 people in Oklahoma, per its EPA record.

Has Miami had any water quality violations?

The EPA has 319 violations on file for Miami, of which 3 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.