Public water system · NH1418010
ActiveMt Washington Cog Rw/Peppersas
At a glance
Mt Washington Cog Rw/Peppersas (PWSID NH1418010) is an active transient non-community water system in Coos County, New Hampshire. It reports serving 999 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in September 2020.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
999
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Mt Washington Cog Rw/Peppersas compare with other water systems in Coos County?
By EPA's size categories, Mt Washington Cog Rw/Peppersas is a small system (501 to 3,300 people). Coos County has 112 active public water systems. Its population served is about 171% above the county average of 368 people per system, and accounts for 2.4% of the 41,217 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 Mt Washington Cog Rw/Peppersas is about 6.9 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 Mt Washington Cog Rw/Peppersas?
EPA lists Mt Washington Cog Rw/Peppersas 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. 74 of the 112 active systems in Coos County (66%) are also privately owned.
Does Mt Washington Cog Rw/Peppersas have drinking water violations?
EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in September 2020. The violations listed here began between April 2017 and September 2020. By type: 2 required treatment not met and 2 reporting. The contaminant or rule involved most often is Revised Total Coliform Rule (4 of them). EPA lists 4 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 |
|---|---|---|---|---|
| 2020-09-01 | Required treatment not metTreatment Technique, Level 2 Assessment (RTCR) · code 2B | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 2020-09-01 | ReportingReporting, Assessment Forms (RTCR) · code 4A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-04-01 | Required treatment not metTreatment Technique Startup Procedures (RTCR) · code 2D | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 2017-04-01 | ReportingReport Startup Procedures Cert Form (RTCR) · code 4C | 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.
Mt Washington Cog Rw/Peppersas: frequently asked questions
Who runs Mt Washington Cog Rw/Peppersas?
Mt Washington Cog Rw/Peppersas (PWSID NH1418010) is a transient non-community water system privately owned. It is regulated by the NH state drinking water program.
How many people does Mt Washington Cog Rw/Peppersas serve?
Mt Washington Cog Rw/Peppersas reports serving 999 people through 1 service connection in Coos County, New Hampshire.
Where does Mt Washington Cog Rw/Peppersas 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 Mt Washington Cog Rw/Peppersas have any drinking water violations?
EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in September 2020. 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 Mt Washington Cog Rw/Peppersas' 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; 2 are health-based, and the most recent began in September 2020. For current results, consult EPA ECHO, or the NH state drinking water program.
Where can I find Mt Washington Cog Rw/Peppersas' water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Mt Washington Cog Rw/Peppersas 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 Coos County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Berlin Water Works | Coos | 9,575 | Community | Surface water |
| Groveton Water Sys | Coos | 2,650 | Community | Groundwater |
| Gorham Water and Sewer Dept | Coos | 2,630 | Community | Surface water |
| Lancaster Water Dept | Coos | 2,500 | Community | Surface water |
| Whitefield Water | Coos | 1,640 | Community | Groundwater |
| Colebrook Water Works | Coos | 1,300 | 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, “Mt Washington Cog Rw/Peppersas, PWSID NH1418010, New Hampshire”, https://aquacensus.com/water-systems/new-hampshire/mt-washington-cog-rw-peppersas-nh1418010 (data as of October 1, 2026).