Public water system · CT1000233
ActiveMountainside Treatment Center
At a glance
Mountainside Treatment Center (PWSID CT1000233) is an active non-transient non-community water system in Litchfield County, Connecticut. It reports serving 80 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's Safe Drinking Water Act records list no violations for this system.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
80
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Mountainside Treatment Center compare with other water systems in Litchfield County?
By EPA's size categories, Mountainside Treatment Center is a very small system (500 people or fewer). Litchfield County has 346 active public water systems. Its population served is well below the county average of 340 people per system, and accounts for less than 0.1% of the 117,512 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 Mountainside Treatment Center 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 Mountainside Treatment Center?
EPA lists Mountainside Treatment Center 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. 297 of the 346 active systems in Litchfield County (86%) are also privately owned.
Does Mountainside Treatment Center have drinking water violations?
No SDWA violations on record.
EPA's SDWA violation and enforcement data (via EPA ECHO, updated quarterly) lists no violations for Mountainside Treatment Center. For the latest compliance status, check EPA ECHO for current compliance history.
Mountainside Treatment Center: frequently asked questions
Who runs Mountainside Treatment Center?
Mountainside Treatment Center (PWSID CT1000233) is a non-transient non-community water system privately owned. It is regulated by the CT state drinking water program.
How many people does Mountainside Treatment Center serve?
Mountainside Treatment Center reports serving 80 people through 1 service connection in Litchfield County, Connecticut.
Where does Mountainside Treatment Center 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 Mountainside Treatment Center have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Mountainside Treatment Center'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 Safe Drinking Water Act records list no violations for this system. For current results, consult EPA ECHO, or the CT state drinking water program.
Where can I find Mountainside Treatment Center's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Mountainside Treatment Center 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 Litchfield County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Torrington Water Company | Litchfield | 37,915 | Community | Surface water |
| Watertown Water & Sewer Authority | Litchfield | 9,972 | Community | Purchased surface water |
| Winsted Water Works | Litchfield | 7,784 | Community | Surface water |
| Watertown Fire District | Litchfield | 6,718 | Community | Groundwater |
| Ctwc - Naugatuck Reg-Terryville System | Litchfield | 5,607 | Community | Groundwater |
| Ctwc - Naugatuck Reg-Thomaston System | Litchfield | 3,789 | 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, “Mountainside Treatment Center, PWSID CT1000233, Connecticut”, https://aquacensus.com/water-systems/connecticut/mountainside-treatment-center-ct1000233 (data as of October 1, 2026).