Public water system · ME0000641

Active

Rsu 03 Unity Elementary School

At a glance

Rsu 03 Unity Elementary School (PWSID ME0000641) is an active non-transient non-community water system in Waldo County, Maine. It reports serving 45 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 8 violations for this system; none is health-based, and the most recent began in November 2021.

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

Population served

Service connections

Primary source

Groundwater

System type

NTNCWS

Non-transient non-community water system

System record

PWSIDME0000641

System typeNon-transient non-community water system

Activity statusActive

Population served45

Service connections1

Primary water sourceGroundwater

Owner typeLocal government

Primacy agencyME state drinking water program

City servedUnity

StateMaine

ZIP—

CountyWaldo County

How does Rsu 03 Unity Elementary School compare with other water systems in Waldo County?

By EPA's size categories, Rsu 03 Unity Elementary School is a very small system (500 people or fewer). Waldo County has 75 active public water systems. Its population served is well below the county average of 257 people per system, and accounts for 0.2% of the 19,252 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 Rsu 03 Unity Elementary School is well below 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 Rsu 03 Unity Elementary School?

EPA lists Rsu 03 Unity Elementary 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. 14 of the 75 active systems in Waldo County (19%) are also owned by a local government.

Does Rsu 03 Unity Elementary School have drinking water violations?

EPA's records list 8 violations for this system; none is health-based, and the most recent began in November 2021. The violations listed here began between July 2004 and November 2021. By type: 6 monitoring and reporting, 1 public notice, recordkeeping or other and 1 reporting. The contaminant or rule involved most often is Lead and Copper Rule (3 of them). EPA lists 6 as resolved, 1 as unaddressed and 1 as archived. 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. 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.

Began	Violation	Contaminant or rule	Health-based	Status
2021-11-13	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Unaddressed
2021-10-01	ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B	Revised Total Coliform Rulecode 8000	No	Resolved
2021-07-01	Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52	Lead and Copper Rulecode 5000	No	Resolved
2017-01-01	Monitoring and reportingMonitoring, Regular · code 03	Cyanidecode 1024	No	Archived
2013-04-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved
2013-01-01	Monitoring and reportingMonitoring, Regular · code 03	Nitratecode 1040	No	Resolved
2011-10-01	Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52	Lead and Copper Rulecode 5000	No	Resolved
2004-07-11	Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52	Lead and Copper Rulecode 5000	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.

Rsu 03 Unity Elementary School: frequently asked questions

Who runs Rsu 03 Unity Elementary School?

Rsu 03 Unity Elementary School (PWSID ME0000641) 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 Rsu 03 Unity Elementary School serve?

Rsu 03 Unity Elementary School reports serving 45 people through 1 service connection in Waldo County, Maine.

Where does Rsu 03 Unity Elementary 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 Rsu 03 Unity Elementary School have any drinking water violations?

EPA's records list 8 violations for this system; none is health-based, and the most recent began in November 2021. 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 Rsu 03 Unity Elementary 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. EPA's records list 8 violations for this system; none is health-based, and the most recent began in November 2021. For current results, consult EPA ECHO, or the ME state drinking water program.

Where can I find Rsu 03 Unity Elementary School's water quality report?

The annual Consumer Confidence Report requirement applies to community water systems. Rsu 03 Unity Elementary 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 Waldo County

Water system	County	Population served	Type	Source
Belfast Water District	Waldo	5,698	Community	Groundwater
Searsport Water District	Waldo	2,763	Community	Groundwater
Rsu 03 Mt View School	Waldo	1,100	Non-transient non-community	Groundwater
Winterport Water District	Waldo	763	Community	Groundwater
Fort Knox	Waldo	592	Transient non-community	Groundwater
Northport Village Corp Water Dept	Waldo	550	Community	Purchased groundwater

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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, “Rsu 03 Unity Elementary School, PWSID ME0000641, Maine”, https://aquacensus.com/water-systems/maine/rsu-03-unity-elementary-school-me0000641 (data as of October 1, 2026).