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Tap water quality report

Tsaile-Dine College Ntua

EPA monitoring tested this supplier for 71 contaminants and detected 12. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

71
contaminants tested
12
detected
1,190
people served
3
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.

3
health-based violations
118
violations on file
2
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2014-01-01 → 2014-03-31
MCL Health-based Resolved 2014-01-01 → 2014-03-31
MCL Health-based Resolved 2014-01-01 → 2014-03-31
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 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 2018-01-01 → 2018-12-31

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
Arsenic
18.71 µg/L 187%
of the EPA limit, at the 95th percentile of samples — 10 µg/L
worst single sample: 31.4 µg/L
19/58 SYR4 2014–2019
Fluoride
312 µg/L 7.8%
of the EPA limit 4000 µg/L
worst single sample: 450 µg/L
13/13 SYR4 2014–2019
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2025
Barium
210.45 µg/L 11%
of the EPA limit 2000 µg/L
worst single sample: 219 µg/L
10/10 SYR4 2014–2019
Gross Alpha, Excl. Radon And U
32.545 pCi/L 217%
of the EPA limit, at the 95th percentile of samples — 15 pCi/L
worst single sample: 35.2 pCi/L
10/11 SYR4 2013–2017
Combined Radium (-226 And -228)
23.76 pCi/L 475%
of the EPA limit, at the 95th percentile of samples — 5 pCi/L
worst single sample: 27 pCi/L
9/11 SYR4 2013–2017
Combined Uranium
3.25 µg/L 11%
of the EPA limit 30 µg/L
worst single sample: 3.4 µg/L
7/11 SYR4 2013–2017
TTHM
21.275 µg/L 27%
of the EPA limit 80 µg/L
worst single sample: 22.4 µg/L
6/6 SYR4 2013–2018
Total Haloacetic Acids (HAA5)
2.985 µg/L 5%
of the EPA limit 60 µg/L
worst single sample: 3 µg/L
4/6 SYR4 2013–2018
Nitrite
429 µg/L 43%
of the EPA limit 1000 µg/L
worst single sample: 430 µg/L
3/27 SYR4 2012–2019
Selenium
4.9 µg/L 9.8%
of the EPA limit 50 µg/L
worst single sample: 5 µg/L
3/10 SYR4 2014–2019
Mercury
0.8750 µg/L 44%
of the EPA limit 2 µg/L
worst single sample: 0.9000 µg/L
2/7 SYR4 2014–2019
59 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) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMethoxychlorNitrateOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal 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 Tsaile-Dine College Ntua

Is Tsaile-Dine College Ntua tap water safe to drink?

EPA monitoring detected 12 contaminants in Tsaile-Dine College 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 Tsaile-Dine College Ntua's water?

EPA monitoring detected Arsenic, Fluoride, Lead, Barium, Gross Alpha, Excl. Radon And U, and others. The full list with the level and data source for each is above.

How many people does Tsaile-Dine College Ntua serve?

Tsaile-Dine College Ntua reports serving 1,190 people in Arizona, per its EPA record.

Has Tsaile-Dine College Ntua had any water quality violations?

The EPA has 118 violations on file for Tsaile-Dine College Ntua, of which 3 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.