Public water system · ME0092355
ActiveMsad 30 Mt Jefferson Junior High
At a glance
Msad 30 Mt Jefferson Junior High (PWSID ME0092355) is an active non-transient non-community water system in Penobscot County, Maine. It reports serving 97 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in August 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
97
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Msad 30 Mt Jefferson Junior High compare with other water systems in Penobscot County?
By EPA's size categories, Msad 30 Mt Jefferson Junior High is a very small system (500 people or fewer). Penobscot County has 169 active public water systems. Its population served is well below the county average of 547 people per system, and accounts for 0.1% of the 92,416 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 30 Mt Jefferson Junior High 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 Msad 30 Mt Jefferson Junior High?
EPA lists Msad 30 Mt Jefferson Junior High as privately owned. 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. 127 of the 169 active systems in Penobscot County (75%) are also privately owned.
Does Msad 30 Mt Jefferson Junior High have drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in August 2025. The violations listed here began between January 2008 and August 2025. By type: 5 monitoring and reporting, 4 monitoring, 2 contaminant level above the legal limit and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Revised Total Coliform Rule (5 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 |
|---|---|---|---|---|
| 2025-08-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2023-12-30 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2023-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2023-10-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2023-09-20 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2023-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, E. coli (RTCR) · code 1A | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 2012-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2009-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2008-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2008-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chlordanecode 2959 | No | Resolved |
| 2008-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Polychlorinated biphenyls (PCBs), totalcode 2383 | 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 30 Mt Jefferson Junior High: frequently asked questions
Who runs Msad 30 Mt Jefferson Junior High?
Msad 30 Mt Jefferson Junior High (PWSID ME0092355) is a non-transient non-community water system privately owned. It is regulated by the ME state drinking water program.
How many people does Msad 30 Mt Jefferson Junior High serve?
Msad 30 Mt Jefferson Junior High reports serving 97 people through 1 service connection in Penobscot County, Maine.
Where does Msad 30 Mt Jefferson Junior High 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 30 Mt Jefferson Junior High have any drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in August 2025. 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 30 Mt Jefferson Junior High'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, 2 are health-based, and the most recent began in August 2025. For current results, consult EPA ECHO, or the ME state drinking water program.
Where can I find Msad 30 Mt Jefferson Junior High's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Msad 30 Mt Jefferson Junior High 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 Penobscot County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Bangor Water District | Penobscot | 27,298 | Community | Surface water |
| Brewer Water Department | Penobscot | 8,860 | Community | Surface water |
| Old Town Water District | Penobscot | 7,648 | Community | Groundwater |
| Orono-Veazie Water District | Penobscot | 5,793 | Community | Groundwater |
| Maine Water Company Millinocket Division | Penobscot | 5,400 | Community | Surface water |
| Hampden Water District | Penobscot | 4,628 | Community | Purchased 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, “Msad 30 Mt Jefferson Junior High, PWSID ME0092355, Maine”, https://aquacensus.com/water-systems/maine/msad-30-mt-jefferson-junior-high-me0092355 (data as of October 1, 2026).