Is Pima Utilities Tap Water Safe? Quality Report

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

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

259

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	2024-08-01 → 2024-08-31
MCL	Health-based	Resolved	2024-08-01 → 2024-08-31
MCL	Health-based	Resolved	2024-08-01 → 2024-08-31
MCL	Health-based	Resolved	2024-08-01 → 2024-08-31
MCL	Health-based	Resolved	2024-06-01 → 2024-06-30
MCL	Health-based	Resolved	2024-06-01 → 2024-06-30
MCL	Health-based	Resolved	2024-06-01 → 2024-06-30
MCL	Health-based	Resolved	2024-06-01 → 2024-06-30
MCL	Health-based	Resolved	1999-09-01 → 1999-09-30
MCL	Health-based	Resolved	1999-02-01 → 1999-02-28

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	5553.5 µg/L 56% of the EPA limit 10000 µg/L worst single sample: 6730 µg/L	102/102	SYR4	2012–2019
Copper	121.9 µg/L 9.4% of the EPA limit 1300 µg/L worst single sample: 152 µg/L	98/102	SYR4	2013–2019
Nitrate-Nitrite	5495 µg/L 55% of the EPA limit 10000 µg/L worst single sample: 6730 µg/L	51/51	SYR4	2012–2019
TTHM	6.8 µg/L 8.5% of the EPA limit 80 µg/L	16/16	SYR4	2012–2019
Lead	0.0100 mg/L 67% of the EPA limit 0.0150 mg/L	11/11	LCR	2025
Total Haloacetic Acids (HAA5)	2.7 µg/L 4.5% of the EPA limit 60 µg/L	7/16	SYR4	2012–2019
Barium	69.5 µg/L 3.5% of the EPA limit 2000 µg/L worst single sample: 70 µg/L	6/6	SYR4	2014–2017
Chromium	11.75 µg/L 12% of the EPA limit 100 µg/L worst single sample: 12 µg/L	6/6	SYR4	2014–2017
Fluoride	817.5 µg/L 20% of the EPA limit 4000 µg/L worst single sample: 820 µg/L	6/6	SYR4	2014–2017
Lithium	381 µg/L No EPA limit set	6/6	UCMR-5	2025
Lead	4.78 µg/L 32% of the EPA limit 15 µg/L worst single sample: 4.8 µg/L	5/102	SYR4	2013–2019
Arsenic	8.9 µg/L 89% of the EPA limit 10 µg/L worst single sample: 9.2 µg/L	3/6	SYR4	2014–2017
Selenium	9.59 µg/L 19% of the EPA limit 50 µg/L worst single sample: 10 µg/L	3/6	SYR4	2014–2017
Bromoform	4 µg/L No EPA limit set	1/1	SYR4	2019
Combined Radium (-226 And -228)	0.8000 pCi/L 16% of the EPA limit 5 pCi/L	1/11	SYR4	2015–2019
Dibromoacetic Acid	1.1 µg/L No EPA limit set	1/1	SYR4	2019
Dibromochloromethane	1.6 µg/L No EPA limit set	1/1	SYR4	2019

93 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, TotalBromodichloromethaneChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDichloroacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: HANSON, JUSTIN G
Phone: 480-895-5009
Email: [email protected]

Frequently asked questions about Pima Utilities

Is Pima Utilities tap water safe to drink?

EPA monitoring detected 17 contaminants in Pima Utilities'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 Pima Utilities's water?

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

How many people does Pima Utilities serve?

Pima Utilities reports serving 20,000 people in Arizona, per its EPA record.

Has Pima Utilities had any water quality violations?

The EPA has 259 violations on file for Pima Utilities, of which 10 are health-based (a contaminant limit or required treatment was breached) and 6 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.