Public water system · NN0403033

Active

Leupp-Birdsprings-Tolani Lake NTUA

At a glance

Leupp-Birdsprings-Tolani Lake NTUA (PWSID NN0403033) is an active community water system in Arizona. It reports serving 2,100 people through 614 service connections. Its primary water source is groundwater, 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 January 2020.

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

Population served

2,100

Service connections

614

Primary source

Groundwater

System type

CWS

Community water system

System record

PWSIDNN0403033

System typeCommunity water system

Activity statusActive

Population served2,100

Service connections614

Primary water sourceGroundwater

Owner typeNative American

Primacy agencyNN state drinking water program

City servedLeupp, Birdsprings, Tolani Lake

StateArizona

ZIP—

County—

How does Leupp-Birdsprings-Tolani Lake NTUA compare with other water systems in Arizona?

By EPA's size categories, Leupp-Birdsprings-Tolani Lake 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 Leupp-Birdsprings-Tolani Lake 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. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,612 Arizona systems (91%) list groundwater as their primary source.

Who owns and regulates Leupp-Birdsprings-Tolani Lake NTUA?

EPA lists Leupp-Birdsprings-Tolani Lake 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 Leupp-Birdsprings-Tolani Lake 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 January 2020. The violations listed here began between January 2010 and January 2020. By type: 8 monitoring and reporting, 2 contaminant level above the legal limit, 1 required treatment not met and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 10 as resolved and 2 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.

Began	Violation	Contaminant or rule	Health-based	Status
2020-01-01	Monitoring and reportingMonitoring, Routine (IDSE) · code 30	Total trihalomethanes (TTHM)code 2950	No	Resolved
2020-01-01	Monitoring and reportingMonitoring, Routine (IDSE) · code 30	Haloacetic acids (HAA5)code 2456	No	Resolved
2017-07-01	Required treatment not metTreatment Technique, Level 1 Assessment (RTCR) · code 2A	Revised Total Coliform Rulecode 8000	Yes	Resolved
2016-04-01	Public notice, recordkeeping or otherSample Siting Plan Errors (RTCR) · code 5A	Revised Total Coliform Rulecode 8000	No	Unaddressed
2013-10-01	Monitoring and reportingFailure Submit IDSE/Subpart V Plan Rpt · code 35	Stage 2 Disinfectants and Disinfection Byproducts Rulecode 0600	No	Unaddressed
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
2012-07-01	Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24	Total coliform bacteria (TCR)code 3100	No	Resolved
2010-10-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Thalliumcode 1085	Yes	Resolved
2010-10-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Antimonycode 1074	Yes	Resolved
2010-01-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Total trihalomethanes (TTHM)code 2950	No	Resolved
2010-01-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Haloacetic acids (HAA5)code 2456	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.

Leupp-Birdsprings-Tolani Lake NTUA: frequently asked questions

Who runs Leupp-Birdsprings-Tolani Lake NTUA?

Leupp-Birdsprings-Tolani Lake NTUA (PWSID NN0403033) is a community water system Native American-owned. It is regulated by the NN state drinking water program.

How many people does Leupp-Birdsprings-Tolani Lake NTUA serve?

Leupp-Birdsprings-Tolani Lake NTUA reports serving 2,100 people through 614 service connections in Arizona.

Where does Leupp-Birdsprings-Tolani Lake NTUA get its water?

EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.

Does Leupp-Birdsprings-Tolani Lake 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 January 2020. 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 Leupp-Birdsprings-Tolani Lake 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 January 2020. For current results, consult the system's annual water quality report, EPA ECHO, or the NN state drinking water program.

Where can I find Leupp-Birdsprings-Tolani Lake NTUA's water quality report?

As a community water system, Leupp-Birdsprings-Tolani Lake 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, “Leupp-Birdsprings-Tolani Lake NTUA, PWSID NN0403033, Arizona”, https://aquacensus.com/water-systems/arizona/leupp-birdsprings-tolani-lake-ntua-nn0403033 (data as of October 1, 2026).