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Tap water quality report

Rock Point Ntua

EPA monitoring tested this supplier for 70 contaminants and detected 8. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

70
contaminants tested
8
detected
1,029
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
127
violations on file
0
still open
ViolationTypeStatusPeriod
MON Monitoring Resolved 2023-03-01 → 2023-03-31
Other Monitoring Resolved 2023-03-01
Other Monitoring Resolved 2023-03-01
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
Other Monitoring Resolved 2016-04-01

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
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2025
Fluoride
1430 µg/L 36%
of the EPA limit 4000 µg/L
worst single sample: 1730 µg/L
6/6 SYR4 2013–2018
Barium
692 µg/L 35%
of the EPA limit 2000 µg/L
worst single sample: 808 µg/L
5/5 SYR4 2013–2018
Arsenic
3.095 µg/L 31%
of the EPA limit 10 µg/L
worst single sample: 3.1 µg/L
2/5 SYR4 2013–2018
Gross Alpha, Excl. Radon And U
2.205 pCi/L 15%
of the EPA limit 15 pCi/L
worst single sample: 2.3 pCi/L
2/2 SYR4 2015–2017
Mercury
0.4950 µg/L 25%
of the EPA limit 2 µg/L
worst single sample: 0.5000 µg/L
2/4 SYR4 2013–2018
Combined Radium (-226 And -228)
0.7000 pCi/L 14%
of the EPA limit 5 pCi/L
 1/2 SYR4 2015–2017
Nitrite
300 µg/L 30%
of the EPA limit 1000 µg/L
 1/12 SYR4 2013–2019
62 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 TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMethoxychlorNitrateOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTTHMTetrachloroethyleneThallium, 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 Rock Point Ntua

Is Rock Point Ntua tap water safe to drink?

EPA monitoring detected 8 contaminants in Rock 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 Rock Point Ntua's water?

EPA monitoring detected Lead, Fluoride, Barium, Arsenic, 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 Rock Point Ntua serve?

Rock Point Ntua reports serving 1,029 people in Arizona, per its EPA record.

Has Rock Point Ntua had any water quality violations?

The EPA has 127 violations on file for Rock Point 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.