Is Gw Santa Cruz Water Co Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Private
Counties served: Pinal

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

245

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	2025-08-01 → 2025-08-31
MCL	Health-based	Resolved	2025-08-01 → 2025-08-31
MCL	Health-based	Resolved	2025-08-01 → 2025-08-31
MCL	Health-based	Resolved	2025-08-01 → 2025-08-31
MCL	Health-based	Resolved	2015-06-01 → 2015-06-30
MCL	Health-based	Resolved	2015-06-01 → 2015-06-30
MCL	Health-based	Resolved	2014-06-01 → 2014-06-30
MCL	Health-based	Resolved	2014-06-01 → 2014-06-30
MCL	Health-based	Resolved	2011-07-01 → 2011-09-30
MCL	Health-based	Resolved	2011-07-01 → 2011-09-30

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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Nitrate	6600 µg/L 66% of the EPA limit 10000 µg/L worst single sample: 7700 µg/L	256/258	SYR4	2012–2019
Combined Uranium	21 µg/L 70% of the EPA limit 30 µg/L worst single sample: 31.29 µg/L	136/138	SYR4	2012–2019
Arsenic	8.36 µg/L 84% of the EPA limit 10 µg/L worst single sample: 9.6 µg/L	129/129	SYR4	2012–2019
Fluoride	2100 µg/L 53% of the EPA limit 4000 µg/L worst single sample: 2200 µg/L	127/128	SYR4	2012–2019
TTHM	37 µg/L 46% of the EPA limit 80 µg/L worst single sample: 54 µg/L	101/102	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	9.105 µg/L 15% of the EPA limit 60 µg/L worst single sample: 16 µg/L	100/106	SYR4	2012–2019
Copper	142 µg/L 11% of the EPA limit 1300 µg/L worst single sample: 280 µg/L	89/91	SYR4	2012–2018
Lead	2.395 µg/L 16% of the EPA limit 15 µg/L worst single sample: 5.5 µg/L	22/91	SYR4	2012–2018
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	15/15	LCR	2024
Nitrate-Nitrite	5506 µg/L 55% of the EPA limit 10000 µg/L worst single sample: 5650 µg/L	13/13	SYR4	2012–2018
Barium	68.2 µg/L 3.4% of the EPA limit 2000 µg/L worst single sample: 69 µg/L	5/5	SYR4	2012–2018
Gross Alpha, Excl. Radon And U	3.32 pCi/L 22% of the EPA limit 15 pCi/L worst single sample: 3.4 pCi/L	5/5	SYR4	2012–2018
Combined Radium (-226 And -228)	0.8700 pCi/L 17% of the EPA limit 5 pCi/L worst single sample: 0.9000 pCi/L	4/17	SYR4	2012–2019
Lithium	263 µg/L No EPA limit set	4/4	UCMR-5	2024
Chromium	6.97 µg/L 7% of the EPA limit 100 µg/L worst single sample: 7 µg/L	3/5	SYR4	2012–2018
Selenium	3.82 µg/L 7.6% of the EPA limit 50 µg/L worst single sample: 4 µg/L	3/5	SYR4	2012–2018

88 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: ARMIJO, SUSAN
Phone: 480-328-9281
Email: [email protected]

Frequently asked questions about Gw Santa Cruz Water Co

Is Gw Santa Cruz Water Co tap water safe to drink?

EPA monitoring detected 16 contaminants in Gw Santa Cruz Water Co'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 Gw Santa Cruz Water Co's water?

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

How many people does Gw Santa Cruz Water Co serve?

Gw Santa Cruz Water Co reports serving 84,000 people in Arizona, per its EPA record.

Has Gw Santa Cruz Water Co had any water quality violations?

The EPA has 245 violations on file for Gw Santa Cruz Water Co, of which 17 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.