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Tap water quality report

Cortez City of

EPA monitoring tested this supplier for 107 contaminants and detected 17. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

107
contaminants tested
17
detected
8,770
people served
7
health-based violations
Colorado rankingsLead in ColoradoPFAS in Colorado
Water source
Surface water
Ownership
Local government
Counties served
Montezuma

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.

7
health-based violations
184
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2020-01-01 → 2020-01-31
TT Health-based Resolved 2020-01-01 → 2020-01-31
TT Health-based Resolved 2020-01-01 → 2020-01-31
TT Health-based Resolved 2020-01-01 → 2020-01-31
TT Health-based Resolved 2005-06-01 → 2005-06-30
TT Health-based Resolved 2005-06-01 → 2005-06-30
TT Health-based Resolved 2005-06-01 → 2005-06-30
MR Monitoring Resolved 2011-01-01 → 2013-12-31
MR Monitoring Resolved 2011-01-01 → 2013-12-31
MR Monitoring Resolved 2011-01-01 → 2013-12-31

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
TTHM
85.4 µg/L 107%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 113 µg/L
62/64 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
47.54 µg/L 79%
of the EPA limit 60 µg/L
worst single sample: 57.2 µg/L
58/58 SYR4 2012–2019
Bromodichloromethane
9.46 µg/L
No EPA limit set
worst single sample: 9.7 µg/L
17/17 SYR4 2012–2018
Chloroform
68.04 µg/L
No EPA limit set
worst single sample: 75.8 µg/L
17/17 SYR4 2012–2018
Lead
0.0022 mg/L 15%
of the EPA limit 0.0150 mg/L
 17/17 LCR 2025
Dichloroacetic Acid
22.45 µg/L
No EPA limit set
worst single sample: 23.1 µg/L
14/14 SYR4 2015–2018
Nitrate
39 µg/L 0.4%
of the EPA limit 10000 µg/L
 14/16 SYR4 2012–2019
Trichloroacetic Acid
23.82 µg/L
No EPA limit set
worst single sample: 28.5 µg/L
14/14 SYR4 2015–2018
Dibromochloromethane
1.14 µg/L
No EPA limit set
worst single sample: 1.2 µg/L
13/17 SYR4 2012–2018
Monochloroacetic Acid
1.82 µg/L
No EPA limit set
worst single sample: 1.9 µg/L
9/14 SYR4 2015–2018
Nitrate-Nitrite
61.4 µg/L 0.6%
of the EPA limit 10000 µg/L
worst single sample: 67 µg/L
5/6 SYR4 2012–2019
Dalapon
1.19 µg/L 0.6%
of the EPA limit 200 µg/L
worst single sample: 1.2 µg/L
2/13 SYR4 2012–2019
Lithium
25 µg/L
No EPA limit set
 2/4 UCMR-5 2023
Barium
96.5 µg/L 4.8%
of the EPA limit 2000 µg/L
 1/1 SYR4 2016
Chromium
6.3 µg/L 6.3%
of the EPA limit 100 µg/L
 1/1 SYR4 2016
Nitrite
36 µg/L 3.6%
of the EPA limit 1000 µg/L
 1/6 SYR4 2012–2019
Selenium
1.2 µg/L 2.4%
of the EPA limit 50 µg/L
 1/1 SYR4 2016
90 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-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-PF3ONSAdonaAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneCombined Radium (-226 And -228)Combined UraniumDichloromethaneDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneFluorideGross Alpha, Excl. Radon And UHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
SIMPSON, CASEY
Phone
970-565-7320
Email
[email protected]

Frequently asked questions about Cortez City of

Is Cortez City of tap water safe to drink?

EPA monitoring detected 17 contaminants in Cortez 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 Cortez City of's water?

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

How many people does Cortez City of serve?

Cortez City of reports serving 8,770 people in Colorado, per its EPA record.

Has Cortez City of had any water quality violations?

The EPA has 184 violations on file for Cortez City of, of which 7 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.