Public water system · ME0000399

Active

Msad 01 Mapleton Elem School

At a glance

Msad 01 Mapleton Elem School (PWSID ME0000399) is an active non-transient non-community water system in Aroostook County, Maine. It reports serving 236 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in December 2023.

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

Population served

236

Service connections

Primary source

Groundwater

System type

NTNCWS

Non-transient non-community water system

System record

PWSIDME0000399

System typeNon-transient non-community water system

Activity statusActive

Population served236

Service connections1

Primary water sourceGroundwater

Owner typeLocal government

Primacy agencyME state drinking water program

City servedMapleton

StateMaine

ZIP—

CountyAroostook County

How does Msad 01 Mapleton Elem School compare with other water systems in Aroostook County?

By EPA's size categories, Msad 01 Mapleton Elem School is a very small system (500 people or fewer). Aroostook County has 123 active public water systems. Its population served is about 28% below the county average of 329 people per system, and accounts for 0.6% of the 40,518 people reported by systems filed under the county. Across Maine, the 1,862 active systems average 503 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Msad 01 Mapleton Elem School is about half of that figure.

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

A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. Maine has 385 active non-transient non-community water systems, 21% of the state's 1,862 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,780 Maine systems (96%) list groundwater as their primary source.

Who owns and regulates Msad 01 Mapleton Elem School?

EPA lists Msad 01 Mapleton Elem School as owned by a local government. The ME state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 21 of the 123 active systems in Aroostook County (17%) are also owned by a local government.

Does Msad 01 Mapleton Elem School have drinking water violations?

Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in December 2023. The violations listed here began between July 2011 and December 2023. By type: 9 monitoring and reporting, 2 public notice, recordkeeping or other and 1 required treatment not met. The contaminant or rule involved most often is Lead and Copper Rule (8 of them). EPA lists 9 as resolved, 2 as archived 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. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status. 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
2023-12-30	Monitoring and reportingLead Consumer Notice · code 66	Lead and Copper Rulecode 5000	No	Resolved
2022-10-01	Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52	Lead and Copper Rulecode 5000	No	Unaddressed
2022-04-09	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2022-04-09	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2021-09-29	Monitoring and reportingLead Consumer Notice · code 66	Lead and Copper Rulecode 5000	No	Resolved
2021-07-01	Monitoring and reportingWater Quality Parameter M/R · code 53	Lead and Copper Rulecode 5000	No	Archived
2021-07-01	Monitoring and reportingWater Quality Parameter M/R · code 53	Lead and Copper Rulecode 5000	No	Archived
2021-07-01	Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52	Lead and Copper Rulecode 5000	No	Resolved
2021-04-01	Required treatment not metOCCT/SOWT Study/Recommendation · code 57	Lead and Copper Rulecode 5000	Yes	Resolved
2016-12-30	Monitoring and reportingLead Consumer Notice · code 66	Lead and Copper Rulecode 5000	No	Resolved
2012-07-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved
2011-07-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	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.

Msad 01 Mapleton Elem School: frequently asked questions

Who runs Msad 01 Mapleton Elem School?

Msad 01 Mapleton Elem School (PWSID ME0000399) is a non-transient non-community water system owned by a local government. It is regulated by the ME state drinking water program.

How many people does Msad 01 Mapleton Elem School serve?

Msad 01 Mapleton Elem School reports serving 236 people through 1 service connection in Aroostook County, Maine.

Where does Msad 01 Mapleton Elem School 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 Msad 01 Mapleton Elem School have any drinking water violations?

Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in December 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 Msad 01 Mapleton Elem School'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, one is health-based, and the most recent began in December 2023. For current results, consult EPA ECHO, or the ME state drinking water program.

Where can I find Msad 01 Mapleton Elem School's water quality report?

The annual Consumer Confidence Report requirement applies to community water systems. Msad 01 Mapleton Elem School is a non-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 Aroostook County

Water system	County	Population served	Type	Source
Presque Isle Utilities District	Aroostook	6,128	Community	Groundwater under influence of surface water
Houlton Water Company	Aroostook	4,735	Community	Groundwater
Caribou Utilities District	Aroostook	3,943	Community	Groundwater
Madawaska Water District	Aroostook	2,738	Community	Groundwater
Van Buren Water District	Aroostook	2,190	Community	Groundwater
Fort Fairfield Utilities District	Aroostook	2,025	Community	Surface water

Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.

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, “Msad 01 Mapleton Elem School, PWSID ME0000399, Maine”, https://aquacensus.com/water-systems/maine/msad-01-mapleton-elem-school-me0000399 (data as of October 1, 2026).