Public water system · NH1405010
ActiveLoudon Elementary Sch
At a glance
Loudon Elementary Sch (PWSID NH1405010) is an active non-transient non-community water system in Merrimack County, New Hampshire. It reports serving 321 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 2 violations for this system; all are health-based, and the most recent began in July 2014.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
321
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Loudon Elementary Sch compare with other water systems in Merrimack County?
By EPA's size categories, Loudon Elementary Sch is a very small system (500 people or fewer). Merrimack County has 244 active public water systems. Its population served is about 37% below the county average of 509 people per system, and accounts for 0.3% of the 124,152 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 Loudon Elementary Sch is about 25% 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 Loudon Elementary Sch?
EPA lists Loudon Elementary 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. 40 of the 244 active systems in Merrimack County (16%) are also owned by a local government.
Does Loudon Elementary Sch have drinking water violations?
EPA's records list 2 violations for this system; all are health-based, and the most recent began in July 2014. The violations listed here began between July 2010 and July 2014. By type: 2 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 1 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 |
|---|---|---|---|---|
| 2014-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2010-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
All 2 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.
Loudon Elementary Sch: frequently asked questions
Who runs Loudon Elementary Sch?
Loudon Elementary Sch (PWSID NH1405010) 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 Loudon Elementary Sch serve?
Loudon Elementary Sch reports serving 321 people through 1 service connection in Merrimack County, New Hampshire.
Where does Loudon Elementary 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 Loudon Elementary Sch have any drinking water violations?
EPA's records list 2 violations for this system; all are health-based, and the most recent began in July 2014. 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 Loudon Elementary 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 2 violations for this system; all are health-based, and the most recent began in July 2014. For current results, consult EPA ECHO, or the NH state drinking water program.
Where can I find Loudon Elementary Sch's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Loudon Elementary 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 Merrimack County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Concord Water Dept | Merrimack | 44,215 | Community | Surface water |
| Franklin Water Works | Merrimack | 7,200 | Community | Groundwater |
| Pembroke Water Works | Merrimack | 5,200 | Community | Groundwater |
| Central Hooksett Water Pct | Merrimack | 4,650 | Community | Purchased surface water |
| Penacook Boscawen Water Pct | Merrimack | 3,800 | Community | Groundwater |
| New London Springfield Water | Merrimack | 3,250 | 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, “Loudon Elementary Sch, PWSID NH1405010, New Hampshire”, https://aquacensus.com/water-systems/new-hampshire/loudon-elementary-sch-nh1405010 (data as of October 1, 2026).