Public water system · NH2271010
ActiveSunapee Water Works
At a glance
Sunapee Water Works (PWSID NH2271010) is an active community water system in Sullivan County, New Hampshire. It reports serving 1,680 people through 507 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 11 are health-based, and the most recent began in January 2020.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,680
Service connections
507
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Sunapee Water Works compare with other water systems in Sullivan County?
By EPA's size categories, Sunapee Water Works is a small system (501 to 3,300 people). Sullivan County has 65 active public water systems, and Sunapee Water Works is the 5th-largest of them by population served. Its population served is about 3.3 times the county average of 510 people per system, and accounts for 5.1% of the 33,165 people reported by systems filed under the county. Across New Hampshire, the 2,450 active systems average 508 people each. Nationally, the average active community water system reports serving 6,703 people, so Sunapee Water Works is well below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. New Hampshire has 706 active community water systems, 29% of the state's 2,450 active systems. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 39 New Hampshire systems (1.6%) list surface water as their primary source.
Who owns and regulates Sunapee Water Works?
EPA lists Sunapee Water Works as owned by a local government. 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. 19 of the 65 active systems in Sullivan County (29%) are also owned by a local government.
Does Sunapee Water Works have drinking water violations?
Of the 12 most recent violations in EPA's records, 11 are health-based, and the most recent began in January 2020. The violations listed here began between January 2004 and January 2020. By type: 11 contaminant level above the legal limit and 1 monitoring and reporting. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (9 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 |
|---|---|---|---|---|
| 2020-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2019-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2019-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2019-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2019-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2018-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2018-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2018-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2008-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2007-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2007-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2004-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | 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.
Sunapee Water Works: frequently asked questions
Who runs Sunapee Water Works?
Sunapee Water Works (PWSID NH2271010) is a community water system owned by a local government. It is regulated by the NH state drinking water program.
How many people does Sunapee Water Works serve?
Sunapee Water Works reports serving 1,680 people through 507 service connections in Sullivan County, New Hampshire.
Where does Sunapee Water Works get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Sunapee Water Works have any drinking water violations?
Of the 12 most recent violations in EPA's records, 11 are health-based, and the most recent began in January 2020. 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 Sunapee Water Works' 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, 11 are health-based, and the most recent began in January 2020. For current results, consult the system's annual water quality report, EPA ECHO, or the NH state drinking water program.
Where can I find Sunapee Water Works' water quality report?
As a community water system, Sunapee Water Works must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Sullivan County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Claremont Water Dept | Sullivan | 9,000 | Community | Surface water |
| Newport Water Works | Sullivan | 5,000 | Community | Surface water |
| Village Dist of Eastman | Sullivan | 3,400 | Community | Groundwater |
| Charlestown Water Works | Sullivan | 2,850 | Community | Groundwater |
| Springfield Rest Area | Sullivan | 999 | Transient non-community | Groundwater |
| Fall Mountain Regional Hs | Sullivan | 850 | Non-transient non-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, “Sunapee Water Works, PWSID NH2271010, New Hampshire”, https://aquacensus.com/water-systems/new-hampshire/sunapee-water-works-nh2271010 (data as of October 1, 2026).