Is Northglenn City of Tap Water Safe? Quality Report

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

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
MR	Monitoring	Resolved	1988-01-01 → 1988-12-31
MR	Monitoring	Resolved	1988-01-01 → 1988-12-31
MR	Monitoring	Resolved	1988-01-01 → 1988-12-31
MR	Monitoring	Resolved	1988-01-01 → 1988-12-31
MR	Monitoring	Resolved	1988-01-01 → 1988-12-31
MR	Monitoring	Resolved	1988-01-01 → 1988-12-31
MR	Monitoring	Resolved	1988-01-01 → 1988-12-31

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	50.165 µg/L 63% of the EPA limit 80 µg/L worst single sample: 55.4 µg/L	128/128	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	39.195 µg/L 65% of the EPA limit 60 µg/L worst single sample: 48.2 µg/L	128/128	SYR4	2012–2019
Lead	0.0017 mg/L 11% of the EPA limit 0.0150 mg/L	18/18	LCR	2025
Bromodichloromethane	15.65 µg/L No EPA limit set worst single sample: 16 µg/L	8/8	SYR4	2016–2019
Chloroform	19.95 µg/L No EPA limit set worst single sample: 21 µg/L	8/8	SYR4	2016–2019
Dibromoacetic Acid	3.781 µg/L No EPA limit set worst single sample: 3.83 µg/L	8/8	SYR4	2016–2019
Dibromochloromethane	8.599 µg/L No EPA limit set worst single sample: 8.69 µg/L	8/8	SYR4	2016–2019
Dichloroacetic Acid	10.685 µg/L No EPA limit set worst single sample: 11 µg/L	8/8	SYR4	2016–2019
Fluoride	505.2 µg/L 13% of the EPA limit 4000 µg/L worst single sample: 508 µg/L	8/8	SYR4	2012–2019
Trichloroacetic Acid	9.195 µg/L No EPA limit set worst single sample: 10 µg/L	8/8	SYR4	2016–2019
Bromoform	1.111 µg/L No EPA limit set worst single sample: 1.12 µg/L	7/8	SYR4	2016–2019
Lithium	19.8 µg/L No EPA limit set	4/4	UCMR-5	2025
Barium	53.66 µg/L 2.7% of the EPA limit 2000 µg/L worst single sample: 54 µg/L	3/3	SYR4	2012–2019
Monobromoacetic Acid	4.5525 µg/L No EPA limit set worst single sample: 4.58 µg/L	2/8	SYR4	2016–2019
1,1,1-Trichloroethane	0.5630 µg/L 0.3% of the EPA limit 200 µg/L	1/8	SYR4	2012–2019
Antimony, Total	0.2400 µg/L 4% of the EPA limit 6 µg/L	1/3	SYR4	2012–2019
Arsenic	0.3200 µg/L 3.2% of the EPA limit 10 µg/L	1/3	SYR4	2012–2019
Carbon Tetrachloride	0.5330 µg/L 11% of the EPA limit 5 µg/L	1/8	SYR4	2012–2019
Chromium	0.6100 µg/L 0.6% of the EPA limit 100 µg/L	1/3	SYR4	2012–2019
Combined Radium (-226 And -228)	0.1780 pCi/L 3.6% of the EPA limit 5 pCi/L	1/1	SYR4	2012
Combined Uranium	0.2000 µg/L 0.7% of the EPA limit 30 µg/L	1/1	SYR4	2012
Gross Alpha, Excl. Radon And U	0.8000 pCi/L 5.3% of the EPA limit 15 pCi/L	1/1	SYR4	2012
Gross Beta Particle Activity	0.6560 pCi/L No EPA limit set	1/1	SYR4	2012
Monochloroacetic Acid	2.1 µg/L No EPA limit set	1/8	SYR4	2016–2019
Selenium	0.5000 µg/L 1% of the EPA limit 50 µg/L	1/3	SYR4	2012–2019
Styrene	0.6590 µg/L 0.7% of the EPA limit 100 µg/L	1/8	SYR4	2012–2019
Thallium, Total	0.0400 µg/L 2% of the EPA limit 2 µg/L	1/3	SYR4	2012–2019

80 contaminants tested, none detected

1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitrateNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineTetrachloroethyleneTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: BORGERS, SARAH
Phone: 303-450-4005
Email: [email protected]

Frequently asked questions about Northglenn City of

Is Northglenn City of tap water safe to drink?

EPA monitoring detected 27 contaminants in Northglenn City of'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 Northglenn City of's water?

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

How many people does Northglenn City of serve?

Northglenn City of reports serving 48,927 people in Colorado, per its EPA record.

Has Northglenn City of had any water quality violations?

The EPA has 7 violations on file for Northglenn City of, of which 0 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.