Public water system · NH0137010

Active

Calef Lake Campground

At a glance

Calef Lake Campground (PWSID NH0137010) is an active transient non-community water system in Rockingham County, New Hampshire. It reports serving 150 people through 143 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 9 violations for this system; 3 are health-based, and the most recent began in September 2018.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

150

Service connections

143

Primary source

Groundwater

System type

TNCWS

Transient non-community water system

System record

PWSIDNH0137010

System typeTransient non-community water system

Activity statusActive

Population served150

Service connections143

Primary water sourceGroundwater

Owner typePrivate

Primacy agencyNH state drinking water program

City servedAuburn

StateNew Hampshire

ZIP—

CountyRockingham County

How does Calef Lake Campground compare with other water systems in Rockingham County?

By EPA's size categories, Calef Lake Campground is a very small system (500 people or fewer). Rockingham County has 554 active public water systems. Its population served is well below the county average of 492 people per system, and accounts for less than 0.1% of the 272,726 people reported by systems filed under the county. Across New Hampshire, the 2,450 active systems average 508 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Calef Lake Campground is roughly in line with that figure.

What does “transient non-community water system” mean?

A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. New Hampshire has 1,291 active transient non-community water systems, 53% 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 Calef Lake Campground?

EPA lists Calef Lake Campground 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. 477 of the 554 active systems in Rockingham County (86%) are also privately owned.

Does Calef Lake Campground have drinking water violations?

EPA's records list 9 violations for this system; 3 are health-based, and the most recent began in September 2018. The violations listed here began between July 2002 and September 2018. By type: 3 public notice, recordkeeping or other, 2 required treatment not met, 1 monitoring and reporting, 1 reporting, 1 monitoring and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Public Notice (3 of them). EPA lists 9 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
2018-09-07	Monitoring and reportingMonitoring, Source Water (GWR) · code 34	E. colicode 3014	No	Resolved
2018-07-11	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2018-05-02	Required treatment not metFailure To Address Deficiency · code 45	Groundwater Rulecode 0700	Yes	Resolved
2018-05-01	ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B	Revised Total Coliform Rulecode 8000	No	Resolved
2018-05-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2013-02-12	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2012-12-07	Required treatment not metFailure To Address Deficiency · code 45	Groundwater Rulecode 0700	Yes	Resolved
2002-10-10	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2002-07-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved

All 9 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.

Calef Lake Campground: frequently asked questions

Who runs Calef Lake Campground?

Calef Lake Campground (PWSID NH0137010) is a transient non-community water system privately owned. It is regulated by the NH state drinking water program.

How many people does Calef Lake Campground serve?

Calef Lake Campground reports serving 150 people through 143 service connections in Rockingham County, New Hampshire.

Where does Calef Lake Campground 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 Calef Lake Campground have any drinking water violations?

EPA's records list 9 violations for this system; 3 are health-based, and the most recent began in September 2018. 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 Calef Lake Campground'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 9 violations for this system; 3 are health-based, and the most recent began in September 2018. For current results, consult EPA ECHO, or the NH state drinking water program.

Where can I find Calef Lake Campground's water quality report?

The annual Consumer Confidence Report requirement applies to community water systems. Calef Lake Campground is a 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 Rockingham County

Water system	County	Population served	Type	Source
Aquarion Water/Nh	Rockingham	34,000	Community	Groundwater
Portsmouth Water Works	Rockingham	33,000	Community	Surface water
Salem Water Dept	Rockingham	21,000	Community	Surface water
Derry Water Dept	Rockingham	17,370	Community	Purchased surface water
Seabrook Water Dept	Rockingham	14,000	Community	Groundwater
Exeter Water Dept	Rockingham	12,236	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, “Calef Lake Campground, PWSID NH0137010, New Hampshire”, https://aquacensus.com/water-systems/new-hampshire/calef-lake-campground-nh0137010 (data as of October 1, 2026).