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Tap water quality report

Superstition Water Coop

EPA monitoring tested this supplier for 69 contaminants and detected 8. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

69
contaminants tested
8
detected
45
people served
1
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.

1
health-based violations
144
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2001-09-01 → 2001-09-30
MR Monitoring Resolved 2022-08-01
MR Monitoring Resolved 2022-08-01
Other Monitoring Resolved 2017-10-01
Other Monitoring Resolved 2017-07-01
Other Monitoring Resolved 2017-07-01
Other Monitoring Resolved 2016-10-01
Other Monitoring Resolved 2016-10-01
Other Monitoring Resolved 2016-10-01
Other Monitoring Resolved 2016-07-01

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 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
Nitrate
3000 µg/L 30%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Copper
34.1 µg/L 2.6%
of the EPA limit 1300 µg/L
worst single sample: 46 µg/L
15/15 SYR4 2013–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 8/8 LCR 2025
Lead
1.1085 µg/L 7.4%
of the EPA limit 15 µg/L
worst single sample: 1.2 µg/L
4/15 SYR4 2013–2019
Arsenic
2.2 µg/L 22%
of the EPA limit 10 µg/L
 1/1 SYR4 2016
Barium
28 µg/L 1.4%
of the EPA limit 2000 µg/L
 1/1 SYR4 2016
Fluoride
510 µg/L 13%
of the EPA limit 4000 µg/L
 1/1 SYR4 2016
Nitrate-Nitrite
3000 µg/L 30%
of the EPA limit 10000 µg/L
 1/1 SYR4 2013
61 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, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
SANDY WILSON - ESTATE OF MARION BONSMAN
Phone
520-548-9472
Email
[email protected]

Frequently asked questions about Superstition Water Coop

Is Superstition Water Coop tap water safe to drink?

EPA monitoring detected 8 contaminants in Superstition Water Coop'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 Superstition Water Coop's water?

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

How many people does Superstition Water Coop serve?

Superstition Water Coop reports serving 45 people in Arizona, per its EPA record.

Has Superstition Water Coop had any water quality violations?

The EPA has 144 violations on file for Superstition Water Coop, of which 1 is 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.