Is Sardis Lake Water Authority Tap Water Safe? Quality Report

Water source: Surface water
Ownership: Local government
Counties served: Pushmataha

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.

1,089

health-based violations

1,226

violations on file

still open

Violation	Type	Status	Period
TT	Health-based	Archived	2025-10-01 → 2025-12-31
TT	Health-based	Archived	2025-10-01 → 2025-12-31
TT	Health-based	Archived	2025-10-01 → 2025-12-31
TT	Health-based	Archived	2025-10-01 → 2025-12-31
MCL	Health-based	Archived	2025-10-01 → 2025-12-31
MCL	Health-based	Archived	2025-10-01 → 2025-12-31
MCL	Health-based	Archived	2025-10-01 → 2025-12-31
MCL	Health-based	Archived	2025-10-01 → 2025-12-31
MCL	Health-based	Archived	2025-10-01 → 2025-12-31
MCL	Health-based	Archived	2025-10-01 → 2025-12-31

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	2127.35 µg/L 164% of the EPA limit, at the 95th percentile of samples — 1300 µg/L worst single sample: 3159.71 µg/L	98/98	SYR4	2012–2019
Lead	34.865 µg/L 232% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 181 µg/L	86/98	SYR4	2012–2019
Bromodichloromethane	13.88 µg/L No EPA limit set worst single sample: 17.4 µg/L	57/57	SYR4	2012–2019
Chloroform	156.2 µg/L No EPA limit set worst single sample: 235 µg/L	57/57	SYR4	2012–2019
TTHM	166.628 µg/L 208% of the EPA limit, at the 95th percentile of samples — 80 µg/L worst single sample: 249.9 µg/L	57/57	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	92.27 µg/L 154% of the EPA limit, at the 95th percentile of samples — 60 µg/L worst single sample: 107.3 µg/L	44/57	SYR4	2012–2019
Trichloroacetic Acid	44.41 µg/L No EPA limit set worst single sample: 64.4 µg/L	43/57	SYR4	2012–2019
Dichloroacetic Acid	44.975 µg/L No EPA limit set worst single sample: 52.4 µg/L	42/57	SYR4	2012–2019
Dibromochloromethane	2.41 µg/L No EPA limit set worst single sample: 5.82 µg/L	41/57	SYR4	2012–2019
Lead	0.00063 mg/L 4.2% of the EPA limit 0.0150 mg/L	23/23	LCR	2025
Monochloroacetic Acid	4.6345 µg/L No EPA limit set worst single sample: 5.41 µg/L	12/57	SYR4	2012–2019
Nitrate-Nitrite	300 µg/L 3% of the EPA limit 10000 µg/L	2/16	SYR4	2012–2019
Barium	23.1 µg/L 1.2% of the EPA limit 2000 µg/L	1/1	SYR4	2019
Bromoform	0.9500 µg/L No EPA limit set	1/57	SYR4	2012–2019

36 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-DichloropropaneAntimony, TotalArsenicBenzeneBeryllium, TotalChlorobenzeneCadmiumCarbon TetrachlorideChromiumCombined Radium (-226 And -228)Combined UraniumDichloromethaneDibromoacetic AcidEthylbenzeneFluorideGross Alpha, Excl. Radon And UGross Beta Particle ActivityMercuryMonobromoacetic AcidSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: SARDIS LAKE WATER AUTHORITY
Phone: 918-569-4685
Email: [email protected]

Frequently asked questions about Sardis Lake Water Authority

Is Sardis Lake Water Authority tap water safe to drink?

EPA monitoring detected 14 contaminants in Sardis Lake Water 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 Sardis Lake Water Authority's water?

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

How many people does Sardis Lake Water Authority serve?

Sardis Lake Water Authority reports serving 307 people in Oklahoma, per its EPA record.

Has Sardis Lake Water Authority had any water quality violations?

The EPA has 1226 violations on file for Sardis Lake Water Authority, of which 1089 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.