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Tap water quality report

Sequoyah Co. Rwd #8

EPA monitoring tested this supplier for 81 contaminants and detected 18. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

81
contaminants tested
18
detected
13,460
people served
32
health-based violations
Oklahoma rankingsLead in OklahomaPFAS in Oklahoma
Water source
Surface water
Ownership
Local government
Counties served
Sequoyah

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.

32
health-based violations
169
violations on file
4
still open
ViolationTypeStatusPeriod
TT Health-based Addressed 2024-10-17
TT Health-based Addressed 2024-10-17
TT Health-based Resolved 2021-11-01 → 2021-11-30
TT Health-based Resolved 2021-11-01 → 2021-11-30
TT Health-based Resolved 2021-11-01 → 2021-11-30
TT Health-based Resolved 2021-11-01 → 2021-11-30
TT Health-based Resolved 2019-10-01 → 2019-10-31
TT Health-based Resolved 2019-10-01 → 2019-10-31
TT Health-based Resolved 2019-10-01 → 2019-10-31
TT Health-based Resolved 2019-10-01 → 2019-10-31

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
TTHM
76.155 µg/L 95%
of the EPA limit 80 µg/L
worst single sample: 114 µg/L
128/128 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
33.53 µg/L 56%
of the EPA limit 60 µg/L
worst single sample: 54.2 µg/L
128/128 SYR4 2012–2019
Bromodichloromethane
13.5 µg/L
No EPA limit set
worst single sample: 15 µg/L
106/106 SYR4 2012–2019
Chloroform
60.525 µg/L
No EPA limit set
worst single sample: 102 µg/L
106/106 SYR4 2012–2019
Dichloroacetic Acid
23.245 µg/L
No EPA limit set
worst single sample: 28.5 µg/L
102/102 SYR4 2012–2019
Trichloroacetic Acid
13.695 µg/L
No EPA limit set
worst single sample: 23.4 µg/L
102/102 SYR4 2012–2019
Dibromochloromethane
5.433 µg/L
No EPA limit set
worst single sample: 6.12 µg/L
99/106 SYR4 2012–2019
Copper
112.8 µg/L 8.7%
of the EPA limit 1300 µg/L
worst single sample: 264 µg/L
85/93 SYR4 2012–2018
Nitrate-Nitrite
1800 µg/L 18%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Dibromoacetic Acid
1.358 µg/L
No EPA limit set
worst single sample: 1.4 µg/L
15/102 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 15/15 LCR 2024
Monochloroacetic Acid
4.011 µg/L
No EPA limit set
worst single sample: 4.18 µg/L
14/102 SYR4 2012–2019
Lead
10.32 µg/L 69%
of the EPA limit 15 µg/L
worst single sample: 11.5 µg/L
5/93 SYR4 2012–2018
Barium
38.55 µg/L 1.9%
of the EPA limit 2000 µg/L
worst single sample: 39 µg/L
2/2 SYR4 2014–2018
Combined Radium (-226 And -228)
0.7820 pCi/L 16%
of the EPA limit 5 pCi/L
 1/1 SYR4 2019
Fluoride
120 µg/L 3%
of the EPA limit 4000 µg/L
 1/2 SYR4 2014–2018
Gross Alpha, Excl. Radon And U
3.33 pCi/L 22%
of the EPA limit 15 pCi/L
 1/1 SYR4 2019
Gross Beta Particle Activity
3.03 pCi/L
No EPA limit set
 1/1 SYR4 2019
63 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicBenzeneBeryllium, TotalBromoformChlorobenzeneCadmiumCarbon TetrachlorideChromiumCombined UraniumDichloromethaneEthylbenzeneGlyphosateHfpo-DaMercuryMonobromoacetic AcidNetfosaaNfdhaNmefosaaPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
SEQUOYAH CO. RWD #8
Phone
918-775-9672
Email
[email protected]

Frequently asked questions about Sequoyah Co. Rwd #8

Is Sequoyah Co. Rwd #8 tap water safe to drink?

EPA monitoring detected 18 contaminants in Sequoyah Co. Rwd #8'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 Sequoyah Co. Rwd #8's water?

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

How many people does Sequoyah Co. Rwd #8 serve?

Sequoyah Co. Rwd #8 reports serving 13,460 people in Oklahoma, per its EPA record.

Has Sequoyah Co. Rwd #8 had any water quality violations?

The EPA has 169 violations on file for Sequoyah Co. Rwd #8, of which 32 are health-based (a contaminant limit or required treatment was breached) and 4 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.