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Tap water quality report

Red Valley North Ntua

EPA monitoring tested this supplier for 70 contaminants and detected 14. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

70
contaminants tested
14
detected
756
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
37
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 → 2020-12-31
MR Monitoring Resolved 2020-01-01 → 2020-12-31
MR Monitoring Resolved 2020-01-01 → 2020-12-31
MR Monitoring Resolved 2013-10-01
MR Monitoring Resolved 2013-10-01
MR Monitoring Resolved 2013-10-01
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
334.5 µg/L 8.4%
of the EPA limit 4000 µg/L
worst single sample: 340 µg/L
12/12 SYR4 2012–2019
Lead
0.0025 mg/L 17%
of the EPA limit 0.0150 mg/L
 12/12 LCR 2025
Barium
391.3 µg/L 20%
of the EPA limit 2000 µg/L
worst single sample: 403 µg/L
10/10 SYR4 2012–2019
TTHM
10.975 µg/L 14%
of the EPA limit 80 µg/L
worst single sample: 13.2 µg/L
6/6 SYR4 2013–2018
Combined Radium (-226 And -228)
2.86 pCi/L 57%
of the EPA limit 5 pCi/L
worst single sample: 3 pCi/L
5/5 SYR4 2012–2018
Gross Alpha, Excl. Radon And U
4.79 pCi/L 32%
of the EPA limit 15 pCi/L
worst single sample: 5 pCi/L
4/5 SYR4 2012–2018
Nitrate
300 µg/L 3%
of the EPA limit 10000 µg/L
 4/38 SYR4 2012–2019
Nitrite
361 µg/L 36%
of the EPA limit 1000 µg/L
worst single sample: 370 µg/L
4/19 SYR4 2012–2019
Mercury
0.7900 µg/L 40%
of the EPA limit 2 µg/L
worst single sample: 0.8000 µg/L
3/8 SYR4 2012–2019
Chromium
1.065 µg/L 1.1%
of the EPA limit 100 µg/L
worst single sample: 1.1 µg/L
2/10 SYR4 2012–2019
Combined Uranium
1.1 µg/L 3.7%
of the EPA limit 30 µg/L
 2/5 SYR4 2012–2018
Di(2-ethylhexyl) Phthalate
3.275 µg/L 55%
of the EPA limit 6 µg/L
worst single sample: 3.4 µg/L
2/8 SYR4 2012–2019
Cadmium
1.4 µg/L 28%
of the EPA limit 5 µg/L
 1/10 SYR4 2012–2019
Thallium, Total
0.1000 µg/L 5%
of the EPA limit 2 µg/L
 1/8 SYR4 2012–2019
56 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, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMethoxychlorOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneTolueneTotal 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 Red Valley North Ntua

Is Red Valley North Ntua tap water safe to drink?

EPA monitoring detected 14 contaminants in Red Valley North 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 Red Valley North Ntua's water?

EPA monitoring detected Fluoride, Lead, Barium, TTHM, Combined Radium (-226 And -228), and others. The full list with the level and data source for each is above.

How many people does Red Valley North Ntua serve?

Red Valley North Ntua reports serving 756 people in Arizona, per its EPA record.

Has Red Valley North Ntua had any water quality violations?

The EPA has 37 violations on file for Red Valley North 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.