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Tap water quality report

Crownpoint-Littlewater-Three Mile Point Ntua

EPA monitoring tested this supplier for 101 contaminants and detected 12. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

101
contaminants tested
12
detected
3,950
people served
7
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.

7
health-based violations
73
violations on file
1
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2013-08-01 → 2013-08-31
MCL Health-based Resolved 2007-08-01 → 2007-08-31
MCL Health-based Resolved 2007-08-01 → 2007-08-31
MCL Health-based Resolved 2007-08-01 → 2007-08-31
MCL Health-based Resolved 2002-04-01 → 2002-04-30
MCL Health-based Resolved 2002-04-01 → 2002-04-30
MCL Health-based Archived 2002-04-01 → 2002-04-30
Other Monitoring Unaddressed 2016-04-01
MR Monitoring Resolved 2012-12-01 → 2012-12-31
MR Monitoring Resolved 2012-12-01 → 2012-12-31

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
Fluoride
655.5 µg/L 16%
of the EPA limit 4000 µg/L
worst single sample: 760 µg/L
12/12 SYR4 2015–2017
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
 11/11 LCR 2025
Barium
65.6 µg/L 3.3%
of the EPA limit 2000 µg/L
worst single sample: 66 µg/L
9/9 SYR4 2015–2017
TTHM
4.46 µg/L 5.6%
of the EPA limit 80 µg/L
worst single sample: 4.6 µg/L
5/5 SYR4 2013–2019
Combined Uranium
28.37 µg/L 95%
of the EPA limit 30 µg/L
worst single sample: 29 µg/L
4/5 SYR4 2012–2019
Lithium
53 µg/L
No EPA limit set
 4/4 UCMR-5 2024
Selenium
18.9 µg/L 38%
of the EPA limit 50 µg/L
worst single sample: 20 µg/L
3/9 SYR4 2015–2017
Gross Alpha, Excl. Radon And U
3.595 pCi/L 24%
of the EPA limit 15 pCi/L
worst single sample: 3.7 pCi/L
2/5 SYR4 2012–2019
Mercury
0.4900 µg/L 25%
of the EPA limit 2 µg/L
worst single sample: 0.5000 µg/L
2/6 SYR4 2016–2017
Nitrite
338 µg/L 34%
of the EPA limit 1000 µg/L
worst single sample: 340 µg/L
2/23 SYR4 2012–2019
Arsenic
11.1 µg/L 111%
of the EPA limit, at the 95th percentile of samples — 10 µg/L
 1/9 SYR4 2015–2017
Chromium
19 µg/L 19%
of the EPA limit 100 µg/L
 1/9 SYR4 2015–2017
89 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, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMethoxychlorNetfosaaNfdhaNmefosaaNitrateOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, 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 Crownpoint-Littlewater-Three Mile Point Ntua

Is Crownpoint-Littlewater-Three Mile Point Ntua tap water safe to drink?

EPA monitoring detected 12 contaminants in Crownpoint-Littlewater-Three Mile Point 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 Crownpoint-Littlewater-Three Mile Point Ntua's water?

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

How many people does Crownpoint-Littlewater-Three Mile Point Ntua serve?

Crownpoint-Littlewater-Three Mile Point Ntua reports serving 3,950 people in Arizona, per its EPA record.

Has Crownpoint-Littlewater-Three Mile Point Ntua had any water quality violations?

The EPA has 73 violations on file for Crownpoint-Littlewater-Three Mile Point Ntua, of which 7 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.