Public water system · NH0732020
ActiveGreen Mountain Treatment Ctr
At a glance
Green Mountain Treatment Ctr (PWSID NH0732020) is an active non-transient non-community water system in Carroll County, New Hampshire. It reports serving 150 people through 14 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in November 2017.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
150
Service connections
14
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Green Mountain Treatment Ctr compare with other water systems in Carroll County?
By EPA's size categories, Green Mountain Treatment Ctr is a very small system (500 people or fewer). Carroll County has 366 active public water systems. Its population served is about 32% below the county average of 221 people per system, and accounts for 0.2% of the 81,013 people reported by systems filed under the county. Across New Hampshire, the 2,450 active systems average 508 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Green Mountain Treatment Ctr is about 65% 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. New Hampshire has 453 active non-transient non-community water systems, 18% of the state's 2,450 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 2,374 New Hampshire systems (97%) list groundwater as their primary source.
Who owns and regulates Green Mountain Treatment Ctr?
EPA lists Green Mountain Treatment Ctr as privately owned. The NH state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 328 of the 366 active systems in Carroll County (90%) are also privately owned.
Does Green Mountain Treatment Ctr have drinking water violations?
Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in November 2017. The violations listed here began between July 2002 and November 2017. By type: 4 contaminant level above the legal limit, 4 monitoring and reporting, 3 public notice, recordkeeping or other and 1 required treatment not met. The contaminant or rule involved most often is Total coliform bacteria (TCR) (6 of them). EPA lists 9 as resolved and 3 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. 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 |
|---|---|---|---|---|
| 2017-11-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, E. coli (RTCR) · code 1A | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 2014-11-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 2013-06-02 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2012-10-18 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2012-10-01 | Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 2011-12-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 2009-10-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2009-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2009-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2003-12-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2002-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2002-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | 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.
Green Mountain Treatment Ctr: frequently asked questions
Who runs Green Mountain Treatment Ctr?
Green Mountain Treatment Ctr (PWSID NH0732020) is a non-transient non-community water system privately owned. It is regulated by the NH state drinking water program.
How many people does Green Mountain Treatment Ctr serve?
Green Mountain Treatment Ctr reports serving 150 people through 14 service connections in Carroll County, New Hampshire.
Where does Green Mountain Treatment Ctr 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 Green Mountain Treatment Ctr have any drinking water violations?
Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in November 2017. 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 Green Mountain Treatment Ctr'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, 5 are health-based, and the most recent began in November 2017. For current results, consult EPA ECHO, or the NH state drinking water program.
Where can I find Green Mountain Treatment Ctr's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Green Mountain Treatment Ctr 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 Carroll County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Wolfeboro Water and Sewer | Carroll | 6,000 | Community | Surface water |
| North Conway Water Pct | Carroll | 5,500 | Community | Groundwater |
| Lower Bartlett Water Pct | Carroll | 3,850 | Community | Groundwater |
| Conway Water and Sewer | Carroll | 2,745 | Community | Groundwater |
| Paradise Shores | Carroll | 2,060 | Community | Groundwater |
| Sanbornville Water Dept | Carroll | 1,425 | Community | 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, “Green Mountain Treatment Ctr, PWSID NH0732020, New Hampshire”, https://aquacensus.com/water-systems/new-hampshire/green-mountain-treatment-ctr-nh0732020 (data as of October 1, 2026).