Tap WaterIndex

← Arizona

Tap water quality report

Pinon-District 4 Ntua

EPA monitoring tested this supplier for 100 contaminants and detected 16. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

100
contaminants tested
16
detected
5,195
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
49
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2020-01-01 → 2020-12-31
MR Monitoring Resolved 2020-01-01 → 2020-12-31
MR Monitoring Resolved 2020-01-01 → 2020-12-31
MR Monitoring Resolved 2020-01-01 → 2020-03-31
MR Monitoring Resolved 2020-01-01 → 2020-03-31
MR Monitoring Resolved 2020-01-01 → 2020-03-31
MR Monitoring Resolved 2020-01-01 → 2020-12-31
MR Monitoring Resolved 2020-01-01 → 2020-12-31
MR Monitoring Resolved 2020-01-01 → 2020-12-31
MR Monitoring Resolved 2017-01-01 → 2017-03-31

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 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
1400 µg/L 14%
of the EPA limit 10000 µg/L
 56/66 SYR4 2012–2019
Fluoride
2071 µg/L 52%
of the EPA limit 4000 µg/L
worst single sample: 2440 µg/L
19/19 SYR4 2012–2019
Arsenic
8.595 µg/L 86%
of the EPA limit 10 µg/L
worst single sample: 14.8 µg/L
18/20 SYR4 2012–2019
Chromium
18.4 µg/L 18%
of the EPA limit 100 µg/L
worst single sample: 21 µg/L
14/15 SYR4 2012–2019
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
 12/12 LCR 2025
Combined Uranium
3.7 µg/L 12%
of the EPA limit 30 µg/L
 10/12 SYR4 2012–2018
Lithium
84.3 µg/L
No EPA limit set
 8/8 UCMR-5 2023
Combined Radium (-226 And -228)
1.875 pCi/L 38%
of the EPA limit 5 pCi/L
worst single sample: 2.3 pCi/L
6/12 SYR4 2012–2018
Gross Alpha, Excl. Radon And U
3.65 pCi/L 24%
of the EPA limit 15 pCi/L
worst single sample: 4 pCi/L
6/12 SYR4 2012–2018
TTHM
5.175 µg/L 6.5%
of the EPA limit 80 µg/L
worst single sample: 5.2 µg/L
6/6 SYR4 2013–2018
Barium
6.25 µg/L 0.3%
of the EPA limit 2000 µg/L
worst single sample: 7 µg/L
4/15 SYR4 2012–2019
Mercury
0.6000 µg/L 30%
of the EPA limit 2 µg/L
 3/11 SYR4 2012–2019
Nitrite
404 µg/L 40%
of the EPA limit 1000 µg/L
worst single sample: 410 µg/L
3/33 SYR4 2012–2019
Selenium
9.4 µg/L 19%
of the EPA limit 50 µg/L
worst single sample: 10 µg/L
3/15 SYR4 2012–2019
Beryllium, Total
6 µg/L 150%
of the EPA limit, at the 95th percentile of samples — 4 µg/L
 1/15 SYR4 2012–2019
Di(2-ethylhexyl) Phthalate
0.7000 µg/L 12%
of the EPA limit 6 µg/L
 1/11 SYR4 2012–2018
84 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMethoxychlorNetfosaaNfdhaNmefosaaOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, 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 Pinon-District 4 Ntua

Is Pinon-District 4 Ntua tap water safe to drink?

EPA monitoring detected 16 contaminants in Pinon-District 4 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 Pinon-District 4 Ntua's water?

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

How many people does Pinon-District 4 Ntua serve?

Pinon-District 4 Ntua reports serving 5,195 people in Arizona, per its EPA record.

Has Pinon-District 4 Ntua had any water quality violations?

The EPA has 49 violations on file for Pinon-District 4 Ntua, of which 0 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.