Is El Reno Tap Water Safe? Quality Report

Water source: SWP
Ownership: Local government
Counties served: Canadian

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.

146

health-based violations

334

violations on file

still open

Violation	Type	Status	Period
TT	Health-based	Resolved	2024-10-17
TT	Health-based	Resolved	2024-10-17
MCL	Health-based	Resolved	2024-07-01 → 2024-09-30
MCL	Health-based	Resolved	2024-07-01 → 2024-09-30
MCL	Health-based	Resolved	2024-07-01 → 2024-09-30
MCL	Health-based	Resolved	2024-07-01 → 2024-09-30
TT	Health-based	Resolved	2022-12-01 → 2022-12-31
TT	Health-based	Resolved	2022-12-01 → 2022-12-31
TT	Health-based	Resolved	2022-12-01 → 2022-12-31
TT	Health-based	Resolved	2022-12-01 → 2022-12-31

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
TTHM	91.39 µg/L 114% of the EPA limit, at the 95th percentile of samples — 80 µg/L worst single sample: 108.4 µg/L	128/128	SYR4	2012–2019
Bromodichloromethane	21.6 µg/L No EPA limit set worst single sample: 30.3 µg/L	126/126	SYR4	2012–2019
Chloroform	48.05 µg/L No EPA limit set worst single sample: 58.4 µg/L	126/126	SYR4	2012–2019
Dibromochloromethane	34.75 µg/L No EPA limit set worst single sample: 37.4 µg/L	126/126	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	41.24 µg/L 69% of the EPA limit 60 µg/L worst single sample: 49.5 µg/L	125/128	SYR4	2012–2019
Dichloroacetic Acid	23.14 µg/L No EPA limit set worst single sample: 30.7 µg/L	113/116	SYR4	2012–2019
Bromoform	28.32 µg/L No EPA limit set worst single sample: 34.3 µg/L	110/126	SYR4	2012–2019
Dibromoacetic Acid	13.315 µg/L No EPA limit set worst single sample: 14.5 µg/L	98/116	SYR4	2012–2019
Trichloroacetic Acid	14.9 µg/L No EPA limit set worst single sample: 17.8 µg/L	96/116	SYR4	2012–2019
Copper	302 µg/L 23% of the EPA limit 1300 µg/L worst single sample: 661 µg/L	81/90	SYR4	2013–2019
Monobromoacetic Acid	2 µg/L No EPA limit set worst single sample: 3.7 µg/L	63/116	SYR4	2012–2019
Monochloroacetic Acid	3.93 µg/L No EPA limit set worst single sample: 4.5 µg/L	20/116	SYR4	2012–2019
Nitrate-Nitrite	480 µg/L 4.8% of the EPA limit 10000 µg/L	16/16	SYR4	2012–2019
Lead	0.0020 mg/L 13% of the EPA limit 0.0150 mg/L	15/15	LCR	2025
Barium	19.8 µg/L 1% of the EPA limit 2000 µg/L worst single sample: 21.4 µg/L	6/6	SYR4	2014–2019
Fluoride	415 µg/L 10% of the EPA limit 4000 µg/L worst single sample: 420 µg/L	6/6	SYR4	2014–2019
Lead	21.625 µg/L 144% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 22.9 µg/L	6/90	SYR4	2013–2019
Gross Beta Particle Activity	6.42 pCi/L No EPA limit set worst single sample: 6.49 pCi/L	5/7	SYR4	2015–2016
Lithium	132 µg/L No EPA limit set	4/4	UCMR-5	2025
Arsenic	2.172 µg/L 22% of the EPA limit 10 µg/L worst single sample: 2.18 µg/L	3/6	SYR4	2014–2018
Combined Uranium	1.297 µg/L 4.3% of the EPA limit 30 µg/L worst single sample: 1.3 µg/L	3/7	SYR4	2015–2016
Dalapon	3.94 µg/L 2% of the EPA limit 200 µg/L	1/6	SYR4	2018–2019

66 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosBenzeneBeryllium, TotalChlorobenzeneCadmiumCarbon TetrachlorideChromiumCombined Radium (-226 And -228)DichloromethaneDinosebEthylbenzeneGlyphosateGross Alpha, Excl. Radon And UHfpo-DaMercuryNetfosaaNfdhaNmefosaaPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: EL RENO
Phone: 405-262-3620
Email: [email protected]

Frequently asked questions about El Reno

Is El Reno tap water safe to drink?

EPA monitoring detected 22 contaminants in El Reno'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 El Reno's water?

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

How many people does El Reno serve?

El Reno reports serving 16,212 people in Oklahoma, per its EPA record.

Has El Reno had any water quality violations?

The EPA has 334 violations on file for El Reno, of which 146 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.