Is Metropolitan Dwid Tap Water Safe? Quality Report

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

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

874

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	2004-04-01 → 2004-06-30
MCL	Health-based	Resolved	2004-03-01 → 2004-03-31
MCL	Health-based	Resolved	2003-01-01 → 2003-12-31
MCL	Health-based	Resolved	2003-01-01 → 2005-12-31
MCL	Health-based	Resolved	2000-10-01 → 2000-12-31
MCL	Health-based	Resolved	2000-07-11 → 2004-07-10
MCL	Health-based	Resolved	1999-10-01 → 1999-12-31
MCL	Health-based	Archived	1991-12-01 → 1991-12-31
MR	Monitoring	Resolved	2024-10-01 → 2024-12-31
MR	Monitoring	Resolved	2024-10-01 → 2024-12-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).

Contaminant	Max	Detection rate	Period
PFBS	0.0048 µg/L	4/42	2025
PFHXS	0.0039 µg/L	2/42	2025

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	4000 µg/L 40% of the EPA limit 10000 µg/L worst single sample: 5000 µg/L	620/620	SYR4	2012–2019
Copper	190 µg/L 15% of the EPA limit 1300 µg/L worst single sample: 500 µg/L	100/100	SYR4	2013–2019
TTHM	6.9 µg/L 8.6% of the EPA limit 80 µg/L worst single sample: 22 µg/L	88/108	SYR4	2012–2019
Lead	4.14 µg/L 28% of the EPA limit 15 µg/L worst single sample: 26 µg/L	63/100	SYR4	2013–2019
Nitrate-Nitrite	3400 µg/L 34% of the EPA limit 10000 µg/L worst single sample: 4600 µg/L	61/61	SYR4	2013–2019
Combined Uranium	4.715 µg/L 16% of the EPA limit 30 µg/L worst single sample: 6.4 µg/L	40/46	SYR4	2013–2019
Arsenic	2.28 µg/L 23% of the EPA limit 10 µg/L worst single sample: 3.7 µg/L	25/33	SYR4	2013–2018
Gross Alpha, Excl. Radon And U	1.585 pCi/L 11% of the EPA limit 15 pCi/L worst single sample: 2 pCi/L	24/46	SYR4	2013–2019
Barium	178 µg/L 8.9% of the EPA limit 2000 µg/L worst single sample: 180 µg/L	23/33	SYR4	2013–2018
Lithium	18.3 µg/L No EPA limit set	19/42	UCMR-5	2025
Fluoride	372 µg/L 9.3% of the EPA limit 4000 µg/L worst single sample: 420 µg/L	13/33	SYR4	2013–2018
Lead	0.00057 mg/L 3.8% of the EPA limit 0.0150 mg/L	9/9	LCR	2025
Xylenes, Total	6.88 µg/L 0.1% of the EPA limit 10000 µg/L worst single sample: 8.8 µg/L	9/164	SYR4	2012–2019
cis-1,2-Dichloroethylene	2.72 µg/L 3.9% of the EPA limit 70 µg/L worst single sample: 2.8 µg/L	9/164	SYR4	2012–2019
Combined Radium (-226 And -228)	1.25 pCi/L 25% of the EPA limit 5 pCi/L worst single sample: 1.4 pCi/L	6/46	SYR4	2013–2019
Selenium	4.025 µg/L 8.1% of the EPA limit 50 µg/L worst single sample: 4.1 µg/L	4/33	SYR4	2013–2018
Ethylbenzene	1.227 µg/L 0.2% of the EPA limit 700 µg/L worst single sample: 1.3 µg/L	3/164	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	11.39 µg/L 19% of the EPA limit 60 µg/L worst single sample: 12 µg/L	3/108	SYR4	2012–2019
Chromium	2.87 µg/L 2.9% of the EPA limit 100 µg/L worst single sample: 2.9 µg/L	2/33	SYR4	2013–2018
Di(2-ethylhexyl) Phthalate	0.7600 µg/L 13% of the EPA limit 6 µg/L	1/74	SYR4	2013–2019
Nitrite	260 µg/L 26% of the EPA limit 1000 µg/L	1/61	SYR4	2013–2019

81 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) AdipateDinosebDiquatEthylene DibromideEndothallEndrinGlyphosateGross Beta Particle ActivityHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaOxamylPfbaPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: OLSEN, JOSEPH
Phone: 520-209-2842
Email: [email protected]

Frequently asked questions about Metropolitan Dwid

Is Metropolitan Dwid tap water safe to drink?

EPA monitoring detected 23 contaminants in Metropolitan Dwid'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 Metropolitan Dwid's water?

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

How many people does Metropolitan Dwid serve?

Metropolitan Dwid reports serving 45,570 people in Arizona, per its EPA record.

Has Metropolitan Dwid had any water quality violations?

The EPA has 874 violations on file for Metropolitan Dwid, of which 8 are health-based (a contaminant limit or required treatment was breached) and 1 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.