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Tap water quality report

Coldwater Canyon 3

EPA monitoring tested this supplier for 80 contaminants and detected 16. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

80
contaminants tested
16
detected
120
people served
0
health-based violations
Arizona rankingsLead in ArizonaPFAS in Arizona
Water source
Ground water
Ownership
Mixed public/private
Counties served
Yavapai

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.

0
health-based violations
79
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2025-07-01 → 2025-09-30
MR Monitoring Resolved 2025-07-01 → 2025-09-30
MR Monitoring Resolved 2025-07-01 → 2025-09-30
MR Monitoring Resolved 2025-01-01
MR Monitoring Resolved 2025-01-01
MR Monitoring Resolved 2022-10-01 → 2022-12-31
MR Monitoring Resolved 2022-10-01 → 2022-12-31
MR Monitoring Resolved 2022-10-01 → 2022-12-31
MR Monitoring Resolved 2022-10-01 → 2022-12-31
MR Monitoring Resolved 2022-04-01 → 2022-06-30

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
Arsenic
15.295 µg/L 153%
of the EPA limit, at the 95th percentile of samples — 10 µg/L
worst single sample: 18.5 µg/L
42/45 SYR4 2012–2019
Copper
1110 µg/L 85%
of the EPA limit 1300 µg/L
worst single sample: 2550 µg/L
19/20 SYR4 2015–2018
Nitrate
3000 µg/L 30%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 8/8 LCR 2024
TTHM
21.9 µg/L 27%
of the EPA limit 80 µg/L
worst single sample: 24.4 µg/L
6/8 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
3.62 µg/L 6%
of the EPA limit 60 µg/L
worst single sample: 3.7 µg/L
5/8 SYR4 2012–2019
Lead
6.02 µg/L 40%
of the EPA limit 15 µg/L
worst single sample: 6.5 µg/L
4/20 SYR4 2015–2018
Barium
17.9 µg/L 0.9%
of the EPA limit 2000 µg/L
worst single sample: 18 µg/L
3/3 SYR4 2013–2019
Fluoride
348 µg/L 8.7%
of the EPA limit 4000 µg/L
worst single sample: 350 µg/L
3/3 SYR4 2013–2019
Bromodichloromethane
2.5 µg/L
No EPA limit set
 1/1 SYR4 2019
Bromoform
3.2 µg/L
No EPA limit set
 1/1 SYR4 2019
Chloroform
0.8000 µg/L
No EPA limit set
 1/1 SYR4 2019
Chromium
1.1 µg/L 1.1%
of the EPA limit 100 µg/L
 1/3 SYR4 2013–2019
Dibromoacetic Acid
2.8 µg/L
No EPA limit set
 1/1 SYR4 2019
Dibromochloromethane
5.2 µg/L
No EPA limit set
 1/1 SYR4 2019
Nitrate-Nitrite
2400 µg/L 24%
of the EPA limit 10000 µg/L
 1/1 SYR4 2013
64 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,3,7,8-TCDD2,4,5-TP2,4-DAntimony, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDichloroacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
COLDWATER CANYON WATER CO
Phone
520-624-1460
Email
[email protected]

Frequently asked questions about Coldwater Canyon 3

Is Coldwater Canyon 3 tap water safe to drink?

EPA monitoring detected 16 contaminants in Coldwater Canyon 3'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 Coldwater Canyon 3's water?

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

How many people does Coldwater Canyon 3 serve?

Coldwater Canyon 3 reports serving 120 people in Arizona, per its EPA record.

Has Coldwater Canyon 3 had any water quality violations?

The EPA has 79 violations on file for Coldwater Canyon 3, 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.