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Tap water quality report

Graham County Utilities - Pima

EPA monitoring tested this supplier for 80 contaminants and detected 10. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

80
contaminants tested
10
detected
3,799
people served
21
health-based violations
Arizona rankingsLead in ArizonaPFAS in Arizona
Water source
Ground water
Ownership
Private
Counties served
Graham

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.

21
health-based violations
148
violations on file
3
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2025-02-23
TT Health-based Resolved 2025-02-23
TT Health-based Resolved 2025-02-23
TT Health-based Resolved 2022-07-01
TT Health-based Resolved 2022-07-01
TT Health-based Resolved 2022-07-01
TT Health-based Resolved 2022-07-01
TT Health-based Resolved 2022-07-01
TT Health-based Resolved 2022-07-01
TT Health-based Resolved 2022-07-01

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
Copper
18.3 µg/L 1.4%
of the EPA limit 1300 µg/L
worst single sample: 26 µg/L
15/30 SYR4 2012–2018
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 14/14 LCR 2024
TTHM
5.565 µg/L 7%
of the EPA limit 80 µg/L
worst single sample: 5.6 µg/L
8/8 SYR4 2012–2019
Arsenic
9.64 µg/L 96%
of the EPA limit 10 µg/L
worst single sample: 10 µg/L
4/4 SYR4 2012–2018
Barium
15.6 µg/L 0.8%
of the EPA limit 2000 µg/L
worst single sample: 16 µg/L
3/3 SYR4 2012–2018
Chromium
4.97 µg/L 5%
of the EPA limit 100 µg/L
worst single sample: 5 µg/L
3/3 SYR4 2012–2018
Fluoride
1280 µg/L 32%
of the EPA limit 4000 µg/L
worst single sample: 1300 µg/L
3/3 SYR4 2012–2018
Bromoform
3.675 µg/L
No EPA limit set
worst single sample: 3.7 µg/L
2/2 SYR4 2019
Dibromochloromethane
0.8950 µg/L
No EPA limit set
worst single sample: 0.9000 µg/L
2/2 SYR4 2019
Lead
1.285 µg/L 8.6%
of the EPA limit 15 µg/L
worst single sample: 1.3 µg/L
2/30 SYR4 2012–2018
70 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 TetrachlorideChlordaneChloroformCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDichloroacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitrateNitrate-NitriteNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
BRYCE, JOSHUA
Phone
928-485-2451
Email
[email protected]

Frequently asked questions about Graham County Utilities - Pima

Is Graham County Utilities - Pima tap water safe to drink?

EPA monitoring detected 10 contaminants in Graham County Utilities - Pima'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 Graham County Utilities - Pima's water?

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

How many people does Graham County Utilities - Pima serve?

Graham County Utilities - Pima reports serving 3,799 people in Arizona, per its EPA record.

Has Graham County Utilities - Pima had any water quality violations?

The EPA has 148 violations on file for Graham County Utilities - Pima, of which 21 are health-based (a contaminant limit or required treatment was breached) and 3 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.