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Tap water quality report

Green Valley Dwid

EPA monitoring tested this supplier for 110 contaminants and detected 16. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

110
contaminants tested
16
detected
8,687
people served
0
health-based violations
Arizona rankingsLead in ArizonaPFAS in Arizona
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.

0
health-based violations
159
violations on file
1
still open
ViolationTypeStatusPeriod
MR Monitoring Unaddressed 2026-01-01
MR Monitoring Resolved 2024-07-01 → 2024-09-30
MR Monitoring Resolved 2024-07-01 → 2024-09-30
MR Monitoring Resolved 2024-07-01 → 2024-09-30
MR Monitoring Resolved 2024-07-01 → 2024-09-30
MR Monitoring Resolved 2024-07-01 → 2024-09-30
MR Monitoring Resolved 2024-07-01 → 2024-09-30
MR Monitoring Resolved 2024-07-01 → 2024-09-30
MR Monitoring Resolved 2024-07-01 → 2024-09-30
MR Monitoring Resolved 2023-07-01 → 2023-09-30

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
181 µg/L 14%
of the EPA limit 1300 µg/L
worst single sample: 330 µg/L
60/60 SYR4 2013–2019
Arsenic
8.25 µg/L 83%
of the EPA limit 10 µg/L
worst single sample: 8.4 µg/L
36/36 SYR4 2012–2019
Nitrate
2748.5 µg/L 27%
of the EPA limit 10000 µg/L
worst single sample: 2770 µg/L
22/22 SYR4 2012–2019
TTHM
29.775 µg/L 37%
of the EPA limit 80 µg/L
worst single sample: 30.9 µg/L
16/16 SYR4 2012–2019
Lead
4.745 µg/L 32%
of the EPA limit 15 µg/L
worst single sample: 9.1 µg/L
14/60 SYR4 2013–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 10/10 LCR 2025
Total Haloacetic Acids (HAA5)
5.44 µg/L 9.1%
of the EPA limit 60 µg/L
worst single sample: 6.7 µg/L
7/16 SYR4 2012–2019
Nitrate-Nitrite
2705.5 µg/L 27%
of the EPA limit 10000 µg/L
worst single sample: 2770 µg/L
4/4 SYR4 2012–2014
Bromodichloromethane
3.02 µg/L
No EPA limit set
worst single sample: 3.1 µg/L
2/2 SYR4 2019
Bromoform
8.88 µg/L
No EPA limit set
worst single sample: 9.2 µg/L
2/2 SYR4 2019
Chloroform
1.165 µg/L
No EPA limit set
worst single sample: 1.2 µg/L
2/2 SYR4 2019
Dibromochloromethane
6.62 µg/L
No EPA limit set
worst single sample: 6.8 µg/L
2/2 SYR4 2019
Barium
14 µg/L 0.7%
of the EPA limit 2000 µg/L
 1/1 SYR4 2012
Dibromoacetic Acid
2.5 µg/L
No EPA limit set
 1/2 SYR4 2019
Fluoride
440 µg/L 11%
of the EPA limit 4000 µg/L
 1/1 SYR4 2012
Lithium
30 µg/L
No EPA limit set
 1/1 UCMR-5 2025
94 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 TetrachlorideChlordaneChromiumCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDichloroacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
BRADY, MIKE R
Phone
520-652-9112
Email
[email protected]

Frequently asked questions about Green Valley Dwid

Is Green Valley Dwid tap water safe to drink?

EPA monitoring detected 16 contaminants in Green Valley 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 Green Valley Dwid's water?

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

How many people does Green Valley Dwid serve?

Green Valley Dwid reports serving 8,687 people in Arizona, per its EPA record.

Has Green Valley Dwid had any water quality violations?

The EPA has 159 violations on file for Green Valley Dwid, of which 0 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.