Public water system · NN0403055

Active

Teec Nos Pos NTUA

At a glance

Teec Nos Pos NTUA (PWSID NN0403055) is an active community water system in Arizona. It reports serving 752 people through 220 service connections. Its primary water source is purchased surface water, and EPA lists it as Native American-owned. Of the 12 most recent violations in EPA's records, 3 are health-based, and the most recent began in April 2016.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

752

Service connections

220

Primary source

SWP

Purchased surface water

System type

CWS

Community water system

System record

PWSIDNN0403055

System typeCommunity water system

Activity statusActive

Population served752

Service connections220

Primary water sourcePurchased surface water

Owner typeNative American

Primacy agencyNN state drinking water program

City servedTeec Nos Pos

StateArizona

ZIP—

County—

How does Teec Nos Pos NTUA compare with other water systems in Arizona?

By EPA's size categories, Teec Nos Pos NTUA is a small system (501 to 3,300 people). Across Arizona, the 1,769 active systems average 4,369 people each. Nationally, the average active community water system reports serving 6,703 people, so Teec Nos Pos NTUA is well below that figure.

What does “community water system” mean?

A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Arizona has 936 active community water systems, 53% of the state's 1,769 active systems. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 22 Arizona systems (1.2%) list purchased surface water as their primary source.

Who owns and regulates Teec Nos Pos NTUA?

EPA lists Teec Nos Pos NTUA as Native American-owned. The NN state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act.

Does Teec Nos Pos NTUA have drinking water violations?

Of the 12 most recent violations in EPA's records, 3 are health-based, and the most recent began in April 2016. The violations listed here began between January 2008 and April 2016. By type: 8 monitoring and reporting, 3 contaminant level above the legal limit and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Combined Radium (-226 and -228) (2 of them). EPA lists 12 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.

Began	Violation	Contaminant or rule	Health-based	Status
2016-04-01	Public notice, recordkeeping or otherSample Siting Plan Errors (RTCR) · code 5A	Revised Total Coliform Rulecode 8000	No	Resolved
2013-10-01	Monitoring and reportingFailure Submit IDSE/Subpart V Plan Rpt · code 35	Stage 2 Disinfectants and Disinfection Byproducts Rulecode 0600	No	Resolved
2013-01-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Combined Radium (-226 and -228)code 4010	Yes	Resolved
2012-12-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved
2012-11-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved
2012-10-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Combined Radium (-226 and -228)code 4010	Yes	Resolved
2011-01-01	Monitoring and reportingMonitoring, Regular · code 03	Fluoridecode 1025	No	Resolved
2010-10-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Combined Uraniumcode 4006	Yes	Resolved
2010-01-01	Monitoring and reportingMonitoring, Regular · code 03	Nitritecode 1041	No	Resolved
2008-01-01	Monitoring and reportingMonitoring, Regular · code 03	Seleniumcode 1045	No	Resolved
2008-01-01	Monitoring and reportingMonitoring, Regular · code 03	Arseniccode 1005	No	Resolved
2008-01-01	Monitoring and reportingMonitoring, Regular · code 03	Bariumcode 1010	No	Resolved

The 12 most recent violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.

Teec Nos Pos NTUA: frequently asked questions

Who runs Teec Nos Pos NTUA?

Teec Nos Pos NTUA (PWSID NN0403055) is a community water system Native American-owned. It is regulated by the NN state drinking water program.

How many people does Teec Nos Pos NTUA serve?

Teec Nos Pos NTUA reports serving 752 people through 220 service connections in Arizona.

Where does Teec Nos Pos NTUA get its water?

EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.

Does Teec Nos Pos NTUA have any drinking water violations?

Of the 12 most recent violations in EPA's records, 3 are health-based, and the most recent began in April 2016. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.

Is Teec Nos Pos NTUA's water safe to drink?

AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. Of the 12 most recent violations in EPA's records, 3 are health-based, and the most recent began in April 2016. For current results, consult the system's annual water quality report, EPA ECHO, or the NN state drinking water program.

Where can I find Teec Nos Pos NTUA's water quality report?

As a community water system, Teec Nos Pos NTUA must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.

Other water systems in Arizona

Water system	County	Population served	Type	Source
Phoenix City of	Maricopa	1,695,000	Community	Surface water
Tucson City of	Pima	732,906	Community	Groundwater
Mesa City of	Maricopa	466,000	Community	Surface water
Gilbert, Town of	Maricopa	247,600	Community	Surface water
Chandler City of	Maricopa	247,328	Community	Surface water
Scottsdale City of	Maricopa	241,361	Community	Surface water

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About this data

Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.

Cite as: AquaCensus, “Teec Nos Pos NTUA, PWSID NN0403055, Arizona”, https://aquacensus.com/water-systems/arizona/teec-nos-pos-ntua-nn0403055 (data as of October 1, 2026).