Public water system · NH2036020
ActivePolar Caves
At a glance
Polar Caves (PWSID NH2036020) is an active transient non-community water system in Grafton County, New Hampshire. It reports serving 600 people through 4 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 4 violations for this system; none is health-based, and the most recent began in November 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
600
Service connections
4
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Polar Caves compare with other water systems in Grafton County?
By EPA's size categories, Polar Caves is a small system (501 to 3,300 people). Grafton County has 270 active public water systems. Its population served is about 52% above the county average of 394 people per system, and accounts for 0.6% 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 transient non-community water system reports serving 144 people, so Polar Caves is about 4.2 times 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 Polar Caves?
EPA lists Polar Caves 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. 213 of the 270 active systems in Grafton County (79%) are also privately owned.
Does Polar Caves have drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in November 2025. The violations listed here began between June 2018 and November 2025. By type: 2 reporting and 2 monitoring. The contaminant or rule involved most often is Revised Total Coliform Rule (4 of them). EPA lists 2 as resolved, 1 as unaddressed 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement. 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 |
|---|---|---|---|---|
| 2025-11-12 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Unaddressed |
| 2025-10-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Archived |
| 2018-06-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2018-06-01 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
All 4 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.
Polar Caves: frequently asked questions
Who runs Polar Caves?
Polar Caves (PWSID NH2036020) is a transient non-community water system privately owned. It is regulated by the NH state drinking water program.
How many people does Polar Caves serve?
Polar Caves reports serving 600 people through 4 service connections in Grafton County, New Hampshire.
Where does Polar Caves 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 Polar Caves have any drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in November 2025. 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 Polar Caves' 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 4 violations for this system; none is health-based, and the most recent began in November 2025. For current results, consult EPA ECHO, or the NH state drinking water program.
Where can I find Polar Caves' water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Polar Caves 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 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, “Polar Caves, PWSID NH2036020, New Hampshire”, https://aquacensus.com/water-systems/new-hampshire/polar-caves-nh2036020 (data as of October 1, 2026).