Public water system · NH1165020
ActiveHolderness Central Sch
At a glance
Holderness Central Sch (PWSID NH1165020) is an active non-transient non-community water system in Grafton County, New Hampshire. It reports serving 185 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 3 violations for this system; none is health-based, and the most recent began in July 2012.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
185
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Holderness Central Sch compare with other water systems in Grafton County?
By EPA's size categories, Holderness Central Sch is a very small system (500 people or fewer). Grafton County has 270 active public water systems. Its population served is about half of the county average of 394 people per system, and accounts for 0.2% of the 106,236 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 Holderness Central Sch is about 57% 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 Holderness Central Sch?
EPA lists Holderness Central Sch 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. 37 of the 270 active systems in Grafton County (14%) are also owned by a local government.
Does Holderness Central Sch have drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in July 2012. The violations listed here began between July 1993 and July 2012. By type: 3 monitoring and reporting. The contaminant or rule involved most often is Lead and Copper Rule (2 of them). EPA lists 3 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 |
|---|---|---|---|---|
| 2012-07-01 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1996-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1993-07-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
All 3 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.
Holderness Central Sch: frequently asked questions
Who runs Holderness Central Sch?
Holderness Central Sch (PWSID NH1165020) is a non-transient non-community water system owned by a local government. It is regulated by the NH state drinking water program.
How many people does Holderness Central Sch serve?
Holderness Central Sch reports serving 185 people through 1 service connection in Grafton County, New Hampshire.
Where does Holderness Central Sch 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 Holderness Central Sch have any drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in July 2012. 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 Holderness Central Sch'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 3 violations for this system; none is health-based, and the most recent began in July 2012. For current results, consult EPA ECHO, or the NH state drinking water program.
Where can I find Holderness Central Sch's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Holderness Central Sch 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 Grafton County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Lebanon Water Dept | Grafton | 13,600 | Community | Surface water |
| Hanover Water Dept | Grafton | 9,600 | Community | Surface water |
| Plymouth Vlg Water and Sewer | Grafton | 6,700 | Community | Groundwater |
| Littleton Water and Light | Grafton | 6,500 | Community | Surface water |
| Bristol Water Works | Grafton | 3,575 | Community | Groundwater |
| Lincoln Water Works | Grafton | 3,300 | Community | Surface water |
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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, “Holderness Central Sch, PWSID NH1165020, New Hampshire”, https://aquacensus.com/water-systems/new-hampshire/holderness-central-sch-nh1165020 (data as of October 1, 2026).