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Tap water quality report

Queen Valley Dwid

EPA monitoring tested this supplier for 80 contaminants and detected 14. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

80
contaminants tested
14
detected
1,200
people served
0
health-based violations
Arizona rankingsLead in ArizonaPFAS in Arizona
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.

0
health-based violations
170
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2023-09-21
MR Monitoring Resolved 2023-09-21
MR Monitoring Resolved 2019-10-01 → 2019-12-31
MR Monitoring Resolved 2019-10-01 → 2019-12-31
MR Monitoring Resolved 2018-04-01 → 2018-06-30
MR Monitoring Resolved 2018-04-01 → 2018-06-30
MR Monitoring Resolved 2016-10-01 → 2016-12-31
MR Monitoring Resolved 2016-10-01 → 2016-12-31
Other Monitoring Resolved 2016-10-01
Other Monitoring Resolved 2016-10-01

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
9900 µg/L 99%
of the EPA limit 10000 µg/L
 68/68 SYR4 2012–2019
Copper
330 µg/L 25%
of the EPA limit 1300 µg/L
 43/50 SYR4 2012–2018
Nitrate-Nitrite
5010 µg/L 50%
of the EPA limit 10000 µg/L
 11/11 SYR4 2012–2018
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 9/9 LCR 2024
Lead
2 µg/L 13%
of the EPA limit 15 µg/L
 8/50 SYR4 2012–2018
TTHM
28 µg/L 35%
of the EPA limit 80 µg/L
 6/8 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
7.1 µg/L 12%
of the EPA limit 60 µg/L
 5/9 SYR4 2013–2019
Arsenic
2.3 µg/L 23%
of the EPA limit 10 µg/L
 4/4 SYR4 2012–2018
Barium
33 µg/L 1.7%
of the EPA limit 2000 µg/L
 4/4 SYR4 2012–2018
Fluoride
400 µg/L 10%
of the EPA limit 4000 µg/L
 4/4 SYR4 2012–2018
Chromium
13 µg/L 13%
of the EPA limit 100 µg/L
 2/4 SYR4 2012–2018
Bromoform
4 µg/L
No EPA limit set
 1/1 SYR4 2019
Combined Radium (-226 And -228)
0.7000 pCi/L 14%
of the EPA limit 5 pCi/L
 1/8 SYR4 2015–2019
Dibromoacetic Acid
1.5 µg/L
No EPA limit set
 1/1 SYR4 2019
66 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, TotalBromodichloromethaneChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDichloroacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
QUEEN VALLEY DWID
Phone
520-463-2780
Email
qvwater@mchsi.com

Frequently asked questions about Queen Valley Dwid

Is Queen Valley Dwid tap water safe to drink?

EPA monitoring detected 14 contaminants in Queen 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 Queen Valley Dwid's water?

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

How many people does Queen Valley Dwid serve?

Queen Valley Dwid reports serving 1,200 people in Arizona, per its EPA record.

Has Queen Valley Dwid had any water quality violations?

The EPA has 170 violations on file for Queen Valley Dwid, of which 0 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.