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Tap water quality report

Gilbert Rigg Well Coop

EPA monitoring tested this supplier for 71 contaminants and detected 8. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

71
contaminants tested
8
detected
95
people served
0
health-based violations
Arizona rankingsLead in ArizonaPFAS in Arizona
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.

0
health-based violations
25
violations on file
2
still open
ViolationTypeStatusPeriod
Other Monitoring Unaddressed 2025-10-02
Other Monitoring Unaddressed 2025-10-02
Other Monitoring Resolved 2013-10-01
MR Monitoring Resolved 2013-10-01 → 2013-10-31
MR Monitoring Resolved 2013-10-01 → 2013-10-31
MR Monitoring Resolved 2013-07-01 → 2013-09-30
Other Monitoring Resolved 2012-10-01
MR Monitoring Resolved 2012-04-01 → 2012-06-30
Other Monitoring Resolved 2011-10-01
MR Monitoring Resolved 2011-04-01 → 2011-06-30

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
Nitrate
2200 µg/L 22%
of the EPA limit 10000 µg/L
 32/32 SYR4 2012–2019
Copper
100 µg/L 7.7%
of the EPA limit 1300 µg/L
 18/18 SYR4 2012–2018
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 10/10 LCR 2024
Arsenic
3.38 µg/L 34%
of the EPA limit 10 µg/L
worst single sample: 3.4 µg/L
5/7 SYR4 2012–2017
Barium
44 µg/L 2.2%
of the EPA limit 2000 µg/L
 1/1 SYR4 2016
Chromium
5.3 µg/L 5.3%
of the EPA limit 100 µg/L
 1/1 SYR4 2016
Fluoride
420 µg/L 11%
of the EPA limit 4000 µg/L
 1/1 SYR4 2016
Nitrate-Nitrite
1500 µg/L 15%
of the EPA limit 10000 µg/L
 1/1 SYR4 2013
63 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 TetrachlorideChlordaneCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTTHMTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
WRIGHT, JAY
Phone
951-531-3733
Email
jwright57@yahoo.com

Frequently asked questions about Gilbert Rigg Well Coop

Is Gilbert Rigg Well Coop tap water safe to drink?

EPA monitoring detected 8 contaminants in Gilbert Rigg Well 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 Gilbert Rigg Well Coop's water?

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

How many people does Gilbert Rigg Well Coop serve?

Gilbert Rigg Well Coop reports serving 95 people in Arizona, per its EPA record.

Has Gilbert Rigg Well Coop had any water quality violations?

The EPA has 25 violations on file for Gilbert Rigg Well Coop, of which 0 are health-based (a contaminant limit or required treatment was breached) and 2 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.