Is Roy City Water Tap Water Safe? Quality Report

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

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.

health-based violations

422

violations on file

still open

Violation	Type	Status	Period
TT	Health-based	Resolved	2017-09-04
TT	Health-based	Resolved	2017-09-04
TT	Health-based	Resolved	2017-09-04
RPT	Monitoring	Resolved	2017-12-13
RPT	Monitoring	Resolved	2017-12-13
RPT	Monitoring	Resolved	2017-12-13
MR	Monitoring	Resolved	2017-09-01 → 2017-09-30
MR	Monitoring	Resolved	2017-09-01 → 2017-09-30
MR	Monitoring	Resolved	2017-09-01 → 2017-09-30
MR	Monitoring	Resolved	2017-08-01 → 2017-08-31

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	424.9 µg/L 33% of the EPA limit 1300 µg/L worst single sample: 1370 µg/L	198/203	SYR4	2012–2019
Lead	29.1 µg/L 194% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 57.1 µg/L	167/202	SYR4	2012–2019
TTHM	38.3 µg/L 48% of the EPA limit 80 µg/L worst single sample: 79.6 µg/L	68/86	SYR4	2012–2019
Bromodichloromethane	10.1 µg/L No EPA limit set worst single sample: 16.2 µg/L	66/84	SYR4	2012–2019
Chloroform	25.34 µg/L No EPA limit set worst single sample: 59.1 µg/L	64/84	SYR4	2012–2019
Dibromochloromethane	4.69 µg/L No EPA limit set worst single sample: 6.8 µg/L	63/84	SYR4	2012–2019
Nitrate	1300 µg/L 13% of the EPA limit 10000 µg/L	56/56	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	18.045 µg/L 30% of the EPA limit 60 µg/L worst single sample: 34.8 µg/L	40/88	SYR4	2012–2019
Trichloroacetic Acid	10.025 µg/L No EPA limit set worst single sample: 14.1 µg/L	40/83	SYR4	2012–2019
Dichloroacetic Acid	9.55 µg/L No EPA limit set worst single sample: 20.7 µg/L	39/83	SYR4	2012–2019
Lead	0.0017 mg/L 11% of the EPA limit 0.0150 mg/L	27/27	LCR	2025
Bromoform	1.8 µg/L No EPA limit set worst single sample: 2.5 µg/L	23/84	SYR4	2012–2019
Barium	280 µg/L 14% of the EPA limit 2000 µg/L worst single sample: 309 µg/L	11/11	SYR4	2013–2019
Dibromoacetic Acid	1.55 µg/L No EPA limit set worst single sample: 1.6 µg/L	11/83	SYR4	2012–2019
Selenium	0.9500 µg/L 1.9% of the EPA limit 50 µg/L worst single sample: 1 µg/L	11/11	SYR4	2013–2019
Lithium	31.6 µg/L No EPA limit set	11/12	UCMR-5	2024
Arsenic	2.105 µg/L 21% of the EPA limit 10 µg/L worst single sample: 2.6 µg/L	10/11	SYR4	2013–2019
Fluoride	200 µg/L 5% of the EPA limit 4000 µg/L	8/11	SYR4	2013–2019
Gross Beta Particle Activity	6.175 pCi/L No EPA limit set worst single sample: 7.1 pCi/L	6/8	SYR4	2014–2019
Gross Alpha, Excl. Radon And U	5.015 pCi/L 33% of the EPA limit 15 pCi/L worst single sample: 5.3 pCi/L	4/9	SYR4	2014–2019
Cyanide	2 µg/L 1% of the EPA limit 200 µg/L	2/11	SYR4	2013–2019
Chromium	5 µg/L 5% of the EPA limit 100 µg/L	1/11	SYR4	2013–2019
Combined Radium (-226 And -228)	0.5600 pCi/L 11% of the EPA limit 5 pCi/L	1/1	SYR4	2014

82 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, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: HOWARD, MATTHEW L
Phone: 801-774-1097
Email: [email protected]

Frequently asked questions about Roy City Water

Is Roy City Water tap water safe to drink?

EPA monitoring detected 23 contaminants in Roy City Water'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 Roy City Water's water?

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

How many people does Roy City Water serve?

Roy City Water reports serving 38,800 people in Utah, per its EPA record.

Has Roy City Water had any water quality violations?

The EPA has 422 violations on file for Roy City Water, of which 3 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.