Public water system · NH1852020
ActiveGage Hill
At a glance
Gage Hill (PWSID NH1852020) is an active community water system in Hillsborough County, New Hampshire. It reports serving 73 people through 29 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, one is health-based, and the most recent began in January 2011.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
73
Service connections
29
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Gage Hill compare with other water systems in Hillsborough County?
By EPA's size categories, Gage Hill is a very small system (500 people or fewer). Hillsborough County has 279 active public water systems. Its population served is well below the county average of 1,206 people per system, and accounts for less than 0.1% of the 336,507 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 Gage Hill 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 Gage Hill?
EPA lists Gage Hill 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. 238 of the 279 active systems in Hillsborough County (85%) are also privately owned.
Does Gage Hill have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in January 2011. The violations listed here began between January 1994 and January 2011. By type: 11 monitoring and reporting and 1 contaminant level above the legal limit. The contaminants or rules involved are Gross alpha (excluding radon and uranium), Chlorine, Lead and Copper Rule and Total coliform bacteria (TCR). EPA lists 11 as resolved and 1 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 |
|---|---|---|---|---|
| 2011-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Gross alpha (excluding radon and uranium)code 4000 | Yes | Resolved |
| 2010-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 1995-01-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1994-11-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1994-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Carbon tetrachloridecode 2982 | No | Resolved |
| 1994-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Trichloroethylenecode 2984 | No | Resolved |
| 1994-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | o-Dichlorobenzenecode 2968 | No | Resolved |
| 1994-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Benzenecode 2990 | No | Resolved |
| 1994-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1,1-Trichloroethanecode 2981 | No | Resolved |
| 1994-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Toluenecode 2991 | No | Resolved |
| 1994-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Ethylbenzenecode 2992 | No | Resolved |
| 1994-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chlorobenzenecode 2989 | 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.
Gage Hill: frequently asked questions
Who runs Gage Hill?
Gage Hill (PWSID NH1852020) is a community water system privately owned. It is regulated by the NH state drinking water program.
How many people does Gage Hill serve?
Gage Hill reports serving 73 people through 29 service connections in Hillsborough County, New Hampshire.
Where does Gage Hill 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 Gage Hill have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in January 2011. 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 Gage Hill'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, one is health-based, and the most recent began in January 2011. For current results, consult the system's annual water quality report, EPA ECHO, or the NH state drinking water program.
Where can I find Gage Hill's water quality report?
As a community water system, Gage Hill 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 Hillsborough County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Manchester Water Works | Hillsborough | 123,500 | Community | Surface water |
| Pennichuck Water Works | Hillsborough | 88,853 | Community | Surface water |
| Merrimack Village Dist | Hillsborough | 25,500 | Community | Groundwater |
| Hudson Water Dept | Hillsborough | 16,700 | Community | Groundwater |
| Milford Water Utilities Dept | Hillsborough | 9,500 | Community | Purchased surface water |
| Litchfield | Hillsborough | 6,920 | Community | Purchased surface water |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Gage Hill, PWSID NH1852020, New Hampshire”, https://aquacensus.com/water-systems/new-hampshire/gage-hill-nh1852020 (data as of October 1, 2026).