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Tap water quality report

Coldwater Canyon 1

EPA monitoring tested this supplier for 80 contaminants and detected 15. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

80
contaminants tested
15
detected
541
people served
22
health-based violations
Arizona rankingsLead in ArizonaPFAS in Arizona
Water source
Ground water
Ownership
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.

22
health-based violations
211
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2023-04-01 → 2023-06-30
MCL Health-based Resolved 2023-04-01 → 2023-06-30
MCL Health-based Resolved 2023-04-01 → 2023-06-30
MCL Health-based Resolved 2023-04-01 → 2023-06-30
MCL Health-based Resolved 2023-01-01 → 2023-03-31
MCL Health-based Resolved 2023-01-01 → 2023-03-31
MCL Health-based Resolved 2023-01-01 → 2023-03-31
MCL Health-based Resolved 2023-01-01 → 2023-03-31
MCL Health-based Resolved 2022-10-01 → 2022-12-31
MCL Health-based Resolved 2022-10-01 → 2022-12-31

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
Copper
530 µg/L 41%
of the EPA limit 1300 µg/L
worst single sample: 1210 µg/L
61/65 SYR4 2012–2019
Arsenic
18 µg/L 180%
of the EPA limit, at the 95th percentile of samples — 10 µg/L
worst single sample: 24 µg/L
33/41 SYR4 2012–2019
Lead
3 µg/L 20%
of the EPA limit 15 µg/L
worst single sample: 4.6 µg/L
25/65 SYR4 2012–2019
Lead
0.0500 mg/L 333%
above the EPA limit of 0.0150 mg/L
 21/21 LCR 2025
Nitrate
3100 µg/L 31%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
TTHM
15.905 µg/L 20%
of the EPA limit 80 µg/L
worst single sample: 17.3 µg/L
10/10 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
5.94 µg/L 9.9%
of the EPA limit 60 µg/L
worst single sample: 6.3 µg/L
4/10 SYR4 2012–2019
Barium
38.75 µg/L 1.9%
of the EPA limit 2000 µg/L
worst single sample: 40 µg/L
2/2 SYR4 2013–2018
Bromodichloromethane
1.585 µg/L
No EPA limit set
worst single sample: 1.6 µg/L
2/2 SYR4 2019
Bromoform
4.435 µg/L
No EPA limit set
worst single sample: 4.5 µg/L
2/2 SYR4 2019
Dibromoacetic Acid
3.8 µg/L
No EPA limit set
worst single sample: 3.9 µg/L
2/2 SYR4 2019
Dibromochloromethane
4.745 µg/L
No EPA limit set
worst single sample: 4.8 µg/L
2/2 SYR4 2019
Fluoride
400 µg/L 10%
of the EPA limit 4000 µg/L
 2/2 SYR4 2013–2018
Chromium
1 µg/L 1%
of the EPA limit 100 µg/L
 1/2 SYR4 2013–2018
Nitrate-Nitrite
3100 µg/L 31%
of the EPA limit 10000 µg/L
 1/1 SYR4 2013
65 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 TetrachlorideChlordaneChloroformCombined 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 1

Is Coldwater Canyon 1 tap water safe to drink?

EPA monitoring detected 15 contaminants in Coldwater Canyon 1'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 1's water?

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

How many people does Coldwater Canyon 1 serve?

Coldwater Canyon 1 reports serving 541 people in Arizona, per its EPA record.

Has Coldwater Canyon 1 had any water quality violations?

The EPA has 211 violations on file for Coldwater Canyon 1, of which 22 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.