Public water system · NH1618370
Active603 Marketplace
At a glance
603 Marketplace (PWSID NH1618370) is an active transient non-community water system in Carroll County, New Hampshire. It reports serving 70 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in December 2022.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
70
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does 603 Marketplace compare with other water systems in Carroll County?
By EPA's size categories, 603 Marketplace is a very small system (500 people or fewer). Carroll County has 366 active public water systems. Its population served is well below the county average of 221 people per system, and accounts for less than 0.1% of the 81,013 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 603 Marketplace is about half of 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 603 Marketplace?
EPA lists 603 Marketplace 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. 328 of the 366 active systems in Carroll County (90%) are also privately owned.
Does 603 Marketplace have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in December 2022. The violations listed here began between October 2016 and December 2022. By type: 6 reporting and 6 monitoring. The contaminant or rule involved most often is Revised Total Coliform Rule (12 of them). EPA lists 12 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 |
|---|---|---|---|---|
| 2022-12-07 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2022-10-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2020-03-10 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2020-02-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2019-02-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2019-02-01 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2018-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2018-07-01 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-10-01 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-10-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2016-10-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2016-10-01 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
The 12 most recent 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.
603 Marketplace: frequently asked questions
Who runs 603 Marketplace?
603 Marketplace (PWSID NH1618370) is a transient non-community water system privately owned. It is regulated by the NH state drinking water program.
How many people does 603 Marketplace serve?
603 Marketplace reports serving 70 people through 1 service connection in Carroll County, New Hampshire.
Where does 603 Marketplace 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 603 Marketplace have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in December 2022. 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 603 Marketplace'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. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in December 2022. For current results, consult EPA ECHO, or the NH state drinking water program.
Where can I find 603 Marketplace's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. 603 Marketplace 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 Carroll County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Wolfeboro Water and Sewer | Carroll | 6,000 | Community | Surface water |
| North Conway Water Pct | Carroll | 5,500 | Community | Groundwater |
| Lower Bartlett Water Pct | Carroll | 3,850 | Community | Groundwater |
| Conway Water and Sewer | Carroll | 2,745 | Community | Groundwater |
| Paradise Shores | Carroll | 2,060 | Community | Groundwater |
| Sanbornville Water Dept | Carroll | 1,425 | 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, “603 Marketplace, PWSID NH1618370, New Hampshire”, https://aquacensus.com/water-systems/new-hampshire/603-marketplace-nh1618370 (data as of October 1, 2026).