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Tap water quality report

Ponca Tribe of Oklahoma

EPA monitoring tested this supplier for 71 contaminants and detected 7. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

71
contaminants tested
7
detected
360
people served
2
health-based violations
Oklahoma rankingsLead in OklahomaPFAS in Oklahoma
Water source
SWP
Ownership
Native American

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.

2
health-based violations
25
violations on file
2
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2020-01-05
MCL Health-based Resolved 2019-10-01 → 2019-10-31
MON Monitoring Resolved 2021-10-01 → 2021-10-31
MON Monitoring Resolved 2021-10-01 → 2021-10-31
MR Monitoring Resolved 2021-07-01 → 2021-09-30
MR Monitoring Resolved 2021-07-01 → 2021-09-30
MR Monitoring Resolved 2021-07-01 → 2021-09-30
MR Monitoring Resolved 2021-07-01 → 2021-09-30
MR Monitoring Resolved 2021-07-01 → 2021-09-30
MR Monitoring Resolved 2021-07-01 → 2021-09-30

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 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
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
 6/6 LCR 2024
Nitrate-Nitrite
5410 µg/L 54%
of the EPA limit 10000 µg/L
 4/4 SYR4 2019
Barium
177 µg/L 8.9%
of the EPA limit 2000 µg/L
 2/2 SYR4 2019
Fluoride
140 µg/L 3.5%
of the EPA limit 4000 µg/L
 2/2 SYR4 2019
Gross Alpha, Excl. Radon And U
1.63 pCi/L 11%
of the EPA limit 15 pCi/L
 2/2 SYR4 2019
Gross Beta Particle Activity
4.5 pCi/L
No EPA limit set
 2/2 SYR4 2019
Combined Radium (-226 And -228)
1.77 pCi/L 35%
of the EPA limit 5 pCi/L
 1/2 SYR4 2019
64 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, TotalBromodichloromethaneBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Earl Howe III
Phone
5807628104
Email
earl.howe@ponca-nsn.gov

Frequently asked questions about Ponca Tribe of Oklahoma

Is Ponca Tribe of Oklahoma tap water safe to drink?

EPA monitoring detected 7 contaminants in Ponca Tribe of Oklahoma'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 Ponca Tribe of Oklahoma's water?

EPA monitoring detected Lead, Nitrate-Nitrite, Barium, Fluoride, Gross Alpha, Excl. Radon And U, and others. The full list with the level and data source for each is above.

How many people does Ponca Tribe of Oklahoma serve?

Ponca Tribe of Oklahoma reports serving 360 people in Oklahoma, per its EPA record.

Has Ponca Tribe of Oklahoma had any water quality violations?

The EPA has 25 violations on file for Ponca Tribe of Oklahoma, of which 2 are health-based (a contaminant limit or required treatment was breached) and 2 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.