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Tap water quality report

Chilchinbeto Ntua

EPA monitoring tested this supplier for 70 contaminants and detected 12. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

70
contaminants tested
12
detected
1,276
people served
0
health-based violations
Arizona rankingsLead in ArizonaPFAS in Arizona
Water source
Ground water
Ownership
Native American

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
42
violations on file
1
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2024-01-01 → 2024-12-31
MR Monitoring Resolved 2024-01-01 → 2024-12-31
MR Monitoring Resolved 2017-01-01 → 2017-12-31
MR Monitoring Resolved 2017-01-01 → 2017-12-31
MR Monitoring Resolved 2017-01-01 → 2017-12-31
MR Monitoring Resolved 2017-01-01 → 2017-12-31
MR Monitoring Resolved 2017-01-01 → 2017-12-31
MR Monitoring Resolved 2017-01-01 → 2017-12-31
MON Monitoring Resolved 2016-07-01 → 2016-07-31
MON Monitoring Resolved 2016-07-01 → 2016-07-31

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
1300 µg/L 13%
of the EPA limit 10000 µg/L
 32/32 SYR4 2012–2019
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2025
Chromium
14 µg/L 14%
of the EPA limit 100 µg/L
 5/6 SYR4 2012–2017
Arsenic
6.2 µg/L 62%
of the EPA limit 10 µg/L
 4/5 SYR4 2014–2018
Barium
10 µg/L 0.5%
of the EPA limit 2000 µg/L
 4/4 SYR4 2014–2017
TTHM
11.8 µg/L 15%
of the EPA limit 80 µg/L
 4/6 SYR4 2013–2019
Combined Uranium
4.5 µg/L 15%
of the EPA limit 30 µg/L
 3/3 SYR4 2012–2015
Combined Radium (-226 And -228)
0.8000 pCi/L 16%
of the EPA limit 5 pCi/L
 2/3 SYR4 2012–2015
Fluoride
731 µg/L 18%
of the EPA limit 4000 µg/L
 2/2 SYR4 2014
Gross Alpha, Excl. Radon And U
0.5000 pCi/L 3.3%
of the EPA limit 15 pCi/L
 2/3 SYR4 2012–2015
Mercury
0.5000 µg/L 25%
of the EPA limit 2 µg/L
 2/4 SYR4 2014–2017
Nitrite
310 µg/L 31%
of the EPA limit 1000 µg/L
 1/16 SYR4 2012–2019
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, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMethoxychlorOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)Total Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
David Shoultz
Phone
9287296277
Email
davids@ntua.com

Frequently asked questions about Chilchinbeto Ntua

Is Chilchinbeto Ntua tap water safe to drink?

EPA monitoring detected 12 contaminants in Chilchinbeto Ntua'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 Chilchinbeto Ntua's water?

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

How many people does Chilchinbeto Ntua serve?

Chilchinbeto Ntua reports serving 1,276 people in Arizona, per its EPA record.

Has Chilchinbeto Ntua had any water quality violations?

The EPA has 42 violations on file for Chilchinbeto Ntua, of which 0 are health-based (a contaminant limit or required treatment was breached) and 1 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.