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Tap water quality report

Otoe-Missouria Tribe

EPA monitoring tested this supplier for 52 contaminants and detected 25. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

52
contaminants tested
25
detected
250
people served
1,001
health-based violations
Oklahoma rankingsLead in OklahomaPFAS in Oklahoma
Water source
Surface water
Ownership
Native American
Counties served
Noble

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.

1,001
health-based violations
1,704
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2023-01-01 → 2023-03-31
MCL Health-based Resolved 2023-01-01 → 2023-03-31
MCL Health-based Resolved 2023-01-01 → 2023-03-31
MCL Health-based Resolved 2023-01-01 → 2023-03-31
MCL Health-based Resolved 2022-07-01 → 2022-09-30
MCL Health-based Resolved 2022-07-01 → 2022-09-30
MCL Health-based Resolved 2022-07-01 → 2022-09-30
MCL Health-based Resolved 2022-07-01 → 2022-09-30
MCL Health-based Resolved 2022-07-01 → 2022-09-30
MCL Health-based Resolved 2022-01-01 → 2022-03-31

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Chloroform
278 µg/L
No EPA limit set
 45/46 SYR4 2012–2019
Bromodichloromethane
73.2 µg/L
No EPA limit set
 44/46 SYR4 2012–2019
Dibromochloromethane
69.4 µg/L
No EPA limit set
 44/46 SYR4 2012–2019
TTHM
311 µg/L 389%
of the EPA limit, in the worst sample — 80 µg/L
 43/43 SYR4 2012–2019
Dichloroacetic Acid
137 µg/L
No EPA limit set
 42/43 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
394 µg/L 657%
of the EPA limit, in the worst sample — 60 µg/L
 42/43 SYR4 2012–2019
Bromoform
27 µg/L
No EPA limit set
 38/46 SYR4 2012–2019
Trichloroacetic Acid
221 µg/L
No EPA limit set
 36/43 SYR4 2012–2019
Dibromoacetic Acid
13.5 µg/L
No EPA limit set
 33/43 SYR4 2012–2019
Copper
501 µg/L 39%
of the EPA limit 1300 µg/L
 29/30 SYR4 2012–2019
Monobromoacetic Acid
3.34 µg/L
No EPA limit set
 16/43 SYR4 2012–2019
Lead
0.0106 mg/L 71%
of the EPA limit 0.0150 mg/L
 15/15 LCR 2025
Monochloroacetic Acid
35.1 µg/L
No EPA limit set
 13/43 SYR4 2012–2019
Nitrate-Nitrite
1280 µg/L 13%
of the EPA limit 10000 µg/L
 8/8 SYR4 2012–2019
Lead
15.4 µg/L 103%
of the EPA limit, in the worst sample — 15 µg/L
 3/31 SYR4 2012–2019
Combined Radium (-226 And -228)
1.4 pCi/L 28%
of the EPA limit 5 pCi/L
 2/2 SYR4 2013–2015
Combined Uranium
2.42 µg/L 8.1%
of the EPA limit 30 µg/L
 2/2 SYR4 2013–2015
Gross Beta Particle Activity
5.81 pCi/L
No EPA limit set
 2/2 SYR4 2013–2015
Nitrate
700 µg/L 7%
of the EPA limit 10000 µg/L
 2/2 SYR4 2012
Barium
108 µg/L 5.4%
of the EPA limit 2000 µg/L
 1/1 SYR4 2013
Ethylbenzene
0.5000 µg/L 0.1%
of the EPA limit 700 µg/L
 1/3 SYR4 2013–2017
Fluoride
270 µg/L 6.8%
of the EPA limit 4000 µg/L
 1/1 SYR4 2013
Gross Alpha, Excl. Radon And U
0.5700 pCi/L 3.8%
of the EPA limit 15 pCi/L
 1/2 SYR4 2013–2015
Toluene
0.5500 µg/L 0.1%
of the EPA limit 1000 µg/L
 1/3 SYR4 2013–2017
Xylenes, Total
1.59 µg/L 0%
of the EPA limit 10000 µg/L
 1/3 SYR4 2013–2017
27 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-DichloropropaneAntimony, TotalArsenicBenzeneBeryllium, TotalChlorobenzeneCadmiumCarbon TetrachlorideChromiumDichloromethaneMercuryNitriteSeleniumStyreneTetrachloroethyleneThallium, TotalTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
OTOE-MISSOURIA TRIBE
Phone
580-723-4466
Email
aberryhill@omtribe.org

Frequently asked questions about Otoe-Missouria Tribe

Is Otoe-Missouria Tribe tap water safe to drink?

EPA monitoring detected 25 contaminants in Otoe-Missouria Tribe'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 Otoe-Missouria Tribe's water?

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

How many people does Otoe-Missouria Tribe serve?

Otoe-Missouria Tribe reports serving 250 people in Oklahoma, per its EPA record.

Has Otoe-Missouria Tribe had any water quality violations?

The EPA has 1704 violations on file for Otoe-Missouria Tribe, of which 1001 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.