Public water system · CT0509123
ActiveBolderdash
At a glance
Bolderdash (PWSID CT0509123) is an active non-transient non-community water system in Middlesex County, Connecticut. It reports serving 25 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 2 violations for this system; none is health-based, and the most recent began in April 2009.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
25
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Bolderdash compare with other water systems in Middlesex County?
By EPA's size categories, Bolderdash is a very small system (500 people or fewer). Middlesex County has 277 active public water systems. Its population served is well below the county average of 353 people per system, and accounts for less than 0.1% of the 97,777 people reported by systems filed under the county. Across Connecticut, the 2,363 active systems average 1,247 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Bolderdash is well 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. Connecticut has 483 active non-transient non-community water systems, 20% of the state's 2,363 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 2,263 Connecticut systems (96%) list groundwater as their primary source.
Who owns and regulates Bolderdash?
EPA lists Bolderdash as privately owned. The CT state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 223 of the 277 active systems in Middlesex County (81%) are also privately owned.
Does Bolderdash have drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in April 2009. The violations listed here began between January 2008 and April 2009. By type: 2 monitoring and reporting. The contaminants or rules involved are Total coliform bacteria (TCR) and Endrin. EPA lists 2 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 |
|---|---|---|---|---|
| 2009-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2008-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Endrincode 2005 | No | Resolved |
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.
Bolderdash: frequently asked questions
Who runs Bolderdash?
Bolderdash (PWSID CT0509123) is a non-transient non-community water system privately owned. It is regulated by the CT state drinking water program.
How many people does Bolderdash serve?
Bolderdash reports serving 25 people through 1 service connection in Middlesex County, Connecticut.
Where does Bolderdash 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 Bolderdash have any drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in April 2009. 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 Bolderdash'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; none is health-based, and the most recent began in April 2009. For current results, consult EPA ECHO, or the CT state drinking water program.
Where can I find Bolderdash's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Bolderdash 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 Middlesex County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Middletown Water Department | Middlesex | 41,019 | Community | Surface water |
| Cromwell Fire District Water Department | Middlesex | 14,316 | Community | Groundwater |
| Ctwc - Shoreline Region-Chester System | Middlesex | 5,030 | Community | Surface water |
| Portland Water Department | Middlesex | 5,010 | Community | Purchased surface water |
| Connecticut Valley Hospital | Middlesex | 2,928 | Community | Surface water |
| Pratt & Whitney | Middlesex | 2,800 | Non-transient non-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, “Bolderdash, PWSID CT0509123, Connecticut”, https://aquacensus.com/water-systems/connecticut/bolderdash-ct0509123 (data as of October 1, 2026).