Public water system · AZ0403104

Active

Arboretum at Flagstaff

At a glance

Arboretum at Flagstaff (PWSID AZ0403104) is an active transient non-community water system in Coconino County, Arizona. It reports serving 217 people through 3 service connections. Its primary water source is purchased groundwater, and EPA lists it as under public/private ownership. EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in April 2023.

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

Population served

217

Service connections

Primary source

GWP

Purchased groundwater

System type

TNCWS

Transient non-community water system

System record

PWSIDAZ0403104

System typeTransient non-community water system

Activity statusActive

Population served217

Service connections3

Primary water sourcePurchased groundwater

Owner typePublic/private partnership

Primacy agencyAZ state drinking water program

City servedFlagstaff

StateArizona

ZIP—

CountyCoconino County

How does Arboretum at Flagstaff compare with other water systems in Coconino County?

By EPA's size categories, Arboretum at Flagstaff is a very small system (500 people or fewer). Coconino County has 114 active public water systems. Its population served is well below the county average of 1,573 people per system, and accounts for 0.1% of the 179,316 people reported by systems filed under the county. Across Arizona, the 1,769 active systems average 4,369 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Arboretum at Flagstaff is about 51% above that figure.

What does “transient non-community water system” mean?

A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. Arizona has 601 active transient non-community water systems, 34% of the state's 1,769 active systems. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own. 71 Arizona systems (4%) list purchased groundwater as their primary source.

Who owns and regulates Arboretum at Flagstaff?

EPA lists Arboretum at Flagstaff as under public/private ownership. The AZ state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 45 of the 114 active systems in Coconino County (39%) are also under public/private ownership.

Does Arboretum at Flagstaff have drinking water violations?

EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in April 2023. The violations listed here began between January 2018 and April 2023. By type: 4 reporting, 2 monitoring, 1 public notice, recordkeeping or other and 1 required treatment not met. The contaminant or rule involved most often is Revised Total Coliform Rule (7 of them). EPA lists 7 as resolved and 1 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
2023-04-27	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Unaddressed
2022-05-01	ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B	Revised Total Coliform Rulecode 8000	No	Resolved
2022-03-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2021-06-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2020-08-01	ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B	Revised Total Coliform Rulecode 8000	No	Resolved
2019-09-01	ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B	Revised Total Coliform Rulecode 8000	No	Resolved
2018-09-23	Required treatment not metTreatment Technique, Level 1 Assessment (RTCR) · code 2A	Revised Total Coliform Rulecode 8000	Yes	Resolved
2018-01-01	ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B	Revised Total Coliform Rulecode 8000	No	Resolved

All 8 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.

Arboretum at Flagstaff: frequently asked questions

Who runs Arboretum at Flagstaff?

Arboretum at Flagstaff (PWSID AZ0403104) is a transient non-community water system under public/private ownership. It is regulated by the AZ state drinking water program.

How many people does Arboretum at Flagstaff serve?

Arboretum at Flagstaff reports serving 217 people through 3 service connections in Coconino County, Arizona.

Where does Arboretum at Flagstaff get its water?

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

Does Arboretum at Flagstaff have any drinking water violations?

EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in April 2023. 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 Arboretum at Flagstaff'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. EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in April 2023. For current results, consult EPA ECHO, or the AZ state drinking water program.

Where can I find Arboretum at Flagstaff's water quality report?

The annual Consumer Confidence Report requirement applies to community water systems. Arboretum at Flagstaff is a transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.

Other water systems in Coconino County

Water system	County	Population served	Type	Source
Flagstaff City of	Coconino	79,796	Community	Surface water
Grand Canyon National Park	Coconino	16,590	Community	Groundwater
Arizona Water Co - Sedona	Coconino	12,104	Community	Groundwater
Doney Park Water	Coconino	8,996	Community	Groundwater
Arizona Water Co - Pinewood	Coconino	8,089	Community	Groundwater
Page City of	Coconino	7,420	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, “Arboretum at Flagstaff, PWSID AZ0403104, Arizona”, https://aquacensus.com/water-systems/arizona/arboretum-at-flagstaff-az0403104 (data as of October 1, 2026).