Public water system · NH0461010
ActiveClaremont Water Dept
At a glance
Claremont Water Dept (PWSID NH0461010) is an active community water system in Sullivan County, New Hampshire. It reports serving 9,000 people through 3,600 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, 6 are health-based, and the most recent began in January 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
9,000
Service connections
3,600
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Claremont Water Dept compare with other water systems in Sullivan County?
By EPA's size categories, Claremont Water Dept is a medium system (3,301 to 10,000 people). Sullivan County has 65 active public water systems, and Claremont Water Dept is the largest of them by population served. Its population served is about 18 times the county average of 510 people per system, and accounts for 27% 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 Claremont Water Dept is about 34% above 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 Claremont Water Dept?
EPA lists Claremont Water Dept 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 Claremont Water Dept have drinking water violations?
Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in January 2026. The violations listed here began between April 1994 and January 2026. By type: 5 monitoring and reporting, 4 contaminant level above the legal limit, 2 required treatment not met and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 of them). EPA lists 10 as resolved and 2 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. 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 |
|---|---|---|---|---|
| 2026-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Unaddressed |
| 2026-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Unaddressed |
| 2025-01-01 | Required treatment not metSingle Turbidity Exceed (Enhanced SWTR) · code 43 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Resolved |
| 2014-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2014-03-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2009-03-30 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2009-02-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2007-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1997-06-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
| 1994-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1994-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1994-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | 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.
Claremont Water Dept: frequently asked questions
Who runs Claremont Water Dept?
Claremont Water Dept (PWSID NH0461010) is a community water system owned by a local government. It is regulated by the NH state drinking water program.
How many people does Claremont Water Dept serve?
Claremont Water Dept reports serving 9,000 people through 3,600 service connections in Sullivan County, New Hampshire.
Where does Claremont Water Dept 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 Claremont Water Dept have any drinking water violations?
Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in January 2026. 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 Claremont Water Dept'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, 6 are health-based, and the most recent began in January 2026. For current results, consult the system's annual water quality report, EPA ECHO, or the NH state drinking water program.
Where can I find Claremont Water Dept's water quality report?
As a community water system, Claremont Water Dept 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 |
|---|---|---|---|---|
| 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 |
| Sunapee Water Works | Sullivan | 1,680 | Community | Surface water |
| 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, “Claremont Water Dept, PWSID NH0461010, New Hampshire”, https://aquacensus.com/water-systems/new-hampshire/claremont-water-dept-nh0461010 (data as of October 1, 2026).