Is Layton City Water Tap Water Safe? Quality Report

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

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

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Archived	1991-01-01 → 1991-01-31
RPT	Monitoring	Resolved	2017-03-27
RPT	Monitoring	Resolved	2017-03-27
RPT	Monitoring	Resolved	2017-03-27
RPT	Monitoring	Resolved	2016-05-01
RPT	Monitoring	Resolved	2016-05-01
RPT	Monitoring	Resolved	2016-05-01
MR	Monitoring	Resolved	2014-01-01 → 2016-12-31
MR	Monitoring	Resolved	2014-01-01 → 2016-12-31
MR	Monitoring	Resolved	2014-01-01 → 2016-12-31

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	36.91 µg/L 46% of the EPA limit 80 µg/L worst single sample: 51.6 µg/L	104/144	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	16.815 µg/L 28% of the EPA limit 60 µg/L worst single sample: 42.11 µg/L	78/143	SYR4	2012–2019
Copper	649.822 µg/L 50% of the EPA limit 1300 µg/L worst single sample: 983.367 µg/L	69/70	SYR4	2014–2017
Lead	4.3249 µg/L 29% of the EPA limit 15 µg/L worst single sample: 16.362 µg/L	59/67	SYR4	2014–2017
Bromodichloromethane	10.1 µg/L No EPA limit set worst single sample: 11.3 µg/L	29/41	SYR4	2017–2019
Chloroform	29.28 µg/L No EPA limit set worst single sample: 37.4 µg/L	29/41	SYR4	2017–2019
Dibromochloromethane	4.2 µg/L No EPA limit set worst single sample: 5.5 µg/L	29/41	SYR4	2017–2019
Trichloroacetic Acid	10.01 µg/L No EPA limit set worst single sample: 10.8 µg/L	28/48	SYR4	2013–2019
Dichloroacetic Acid	8.48 µg/L No EPA limit set worst single sample: 9.6 µg/L	27/48	SYR4	2013–2019
Lead	0.0041 mg/L 27% of the EPA limit 0.0150 mg/L	25/25	LCR	2023
Fluoride	774.4 µg/L 19% of the EPA limit 4000 µg/L worst single sample: 792 µg/L	17/18	SYR4	2013–2019
Nitrate	1170 µg/L 12% of the EPA limit 10000 µg/L	16/16	SYR4	2012–2019
Nitrate-Nitrite	1110 µg/L 11% of the EPA limit 10000 µg/L worst single sample: 1170 µg/L	11/11	SYR4	2012–2017
Bromoform	1.82 µg/L No EPA limit set worst single sample: 2 µg/L	5/41	SYR4	2017–2019
Gross Alpha, Excl. Radon And U	4.242 pCi/L 28% of the EPA limit 15 pCi/L worst single sample: 4.38 pCi/L	3/3	SYR4	2014–2017
Arsenic	1.0085 µg/L 10% of the EPA limit 10 µg/L worst single sample: 1.03 µg/L	2/3	SYR4	2013–2019
Barium	168.95 µg/L 8.4% of the EPA limit 2000 µg/L worst single sample: 172 µg/L	2/3	SYR4	2013–2019
Lithium	14 µg/L No EPA limit set	2/12	UCMR-5	2025
Chromium	3.49 µg/L 3.5% of the EPA limit 100 µg/L	1/3	SYR4	2013–2019
Dibromoacetic Acid	1.4 µg/L No EPA limit set	1/48	SYR4	2013–2019
Gross Beta Particle Activity	1.6 pCi/L No EPA limit set	1/1	SYR4	2017
Selenium	0.5000 µg/L 1% of the EPA limit 50 µg/L	1/3	SYR4	2013–2019

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, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon 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: ADAMS, WESLEY O
Phone: 801-336-3720
Email: [email protected]

Frequently asked questions about Layton City Water

Is Layton City Water tap water safe to drink?

EPA monitoring detected 22 contaminants in Layton 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 Layton City Water's water?

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

How many people does Layton City Water serve?

Layton City Water reports serving 82,000 people in Utah, per its EPA record.

Has Layton City Water had any water quality violations?

The EPA has 61 violations on file for Layton City Water, of which 1 is 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.