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Tap water quality report

Arizona Water Co - Tierra Grande

EPA monitoring tested this supplier for 71 contaminants and detected 13. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

71
contaminants tested
13
detected
1,796
people served
4
health-based violations
Arizona rankingsLead in ArizonaPFAS in Arizona
Water source
Ground water
Ownership
Mixed public/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.

4
health-based violations
23
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2024-10-17
TT Health-based Resolved 2024-10-17
TT Health-based Resolved 2024-10-17
TT Health-based Resolved 2024-10-17
RPT Monitoring Resolved 2024-10-17
RPT Monitoring Resolved 2024-10-17
RPT Monitoring Resolved 2024-10-17
RPT Monitoring Resolved 2024-10-17
RPT Monitoring Resolved 2020-10-01
RPT Monitoring Resolved 2020-10-01

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
Copper
380 µg/L 29%
of the EPA limit 1300 µg/L
 32/32 SYR4 2014–2018
TTHM
91 µg/L 114%
of the EPA limit, in the worst sample — 80 µg/L
 20/20 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
18 µg/L 30%
of the EPA limit 60 µg/L
 18/18 SYR4 2012–2019
Nitrate
3900 µg/L 39%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Lead
5.9 µg/L 39%
of the EPA limit 15 µg/L
 13/32 SYR4 2014–2018
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 11/11 LCR 2024
Arsenic
5 µg/L 50%
of the EPA limit 10 µg/L
 1/1 SYR4 2012
Barium
45 µg/L 2.3%
of the EPA limit 2000 µg/L
 1/1 SYR4 2012
Combined Radium (-226 And -228)
0.5000 pCi/L 10%
of the EPA limit 5 pCi/L
 1/3 SYR4 2012–2018
Di(2-ethylhexyl) Phthalate
1 µg/L 17%
of the EPA limit 6 µg/L
 1/1 SYR4 2018
Fluoride
260 µg/L 6.5%
of the EPA limit 4000 µg/L
 1/1 SYR4 2012
Nitrate-Nitrite
3700 µg/L 37%
of the EPA limit 10000 µg/L
 1/1 SYR4 2012
Selenium
6.2 µg/L 12%
of the EPA limit 50 µg/L
 1/1 SYR4 2012
58 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 TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
CAVALIER, RYAN
Phone
602-294-2151
Email
rcavalier@azwater.com

Frequently asked questions about Arizona Water Co - Tierra Grande

Is Arizona Water Co - Tierra Grande tap water safe to drink?

EPA monitoring detected 13 contaminants in Arizona Water Co - Tierra Grande'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 Arizona Water Co - Tierra Grande's water?

EPA monitoring detected Copper, TTHM, Total Haloacetic Acids (HAA5), Nitrate, Lead, and others. The full list with the level and data source for each is above.

How many people does Arizona Water Co - Tierra Grande serve?

Arizona Water Co - Tierra Grande reports serving 1,796 people in Arizona, per its EPA record.

Has Arizona Water Co - Tierra Grande had any water quality violations?

The EPA has 23 violations on file for Arizona Water Co - Tierra Grande, of which 4 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.