Public water system · NH0162160
ActiveCow Hill Wellhouse
At a glance
Cow Hill Wellhouse (PWSID NH0162160) is an active community water system in Carroll County, New Hampshire. It reports serving 150 people through 58 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 6 violations for this system; 4 are health-based, and the most recent began in March 2015.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
150
Service connections
58
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Cow Hill Wellhouse compare with other water systems in Carroll County?
By EPA's size categories, Cow Hill Wellhouse 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 community water system reports serving 6,703 people, so Cow Hill Wellhouse 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. 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 Cow Hill Wellhouse?
EPA lists Cow Hill Wellhouse 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 Cow Hill Wellhouse have drinking water violations?
EPA's records list 6 violations for this system; 4 are health-based, and the most recent began in March 2015. The violations listed here began between February 1996 and March 2015. By type: 3 contaminant level above the legal limit, 1 public notice, recordkeeping or other, 1 required treatment not met and 1 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 6 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 |
|---|---|---|---|---|
| 2015-03-03 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2015-01-16 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2008-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1999-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1996-06-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1996-02-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 6 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.
Cow Hill Wellhouse: frequently asked questions
Who runs Cow Hill Wellhouse?
Cow Hill Wellhouse (PWSID NH0162160) is a community water system privately owned. It is regulated by the NH state drinking water program.
How many people does Cow Hill Wellhouse serve?
Cow Hill Wellhouse reports serving 150 people through 58 service connections in Carroll County, New Hampshire.
Where does Cow Hill Wellhouse 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 Cow Hill Wellhouse have any drinking water violations?
EPA's records list 6 violations for this system; 4 are health-based, and the most recent began in March 2015. 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 Cow Hill Wellhouse'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 6 violations for this system; 4 are health-based, and the most recent began in March 2015. For current results, consult the system's annual water quality report, EPA ECHO, or the NH state drinking water program.
Where can I find Cow Hill Wellhouse's water quality report?
As a community water system, Cow Hill Wellhouse 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 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, “Cow Hill Wellhouse, PWSID NH0162160, New Hampshire”, https://aquacensus.com/water-systems/new-hampshire/cow-hill-wellhouse-nh0162160 (data as of October 1, 2026).