Backflow testing requirements in Stonington, Connecticut
Start with the verified utility guides and state water-system records below. The responsible utility—not the town name alone—sets the property's accepted form, testing schedule, and submission route.
Best available local guidance
Utility guides associated with Stonington
Connecticut DPH inventory
Public water systems listing Stonington
These systems list Stoningtonas their principal municipality in the active DPH inventory. This is a discovery aid, not proof that a particular address is inside a system's service boundary.
Aquarion-Mystic
PWS ID CT1370011 · surface water
10,788 population listed
5,032 service connections
CTWC - Shoreline Region-Masons Island
PWS ID CT1370051 · SWP
445 population listed
190 service connections
Aquarion-Arlington Acres
PWS ID CT1370071 · groundwater
392 population listed
150 service connections
Classee Water System - Latimer Point
PWS ID CT1378011 · SWP
316 population listed
79 service connections
2
Non-transient, non-community systems
12
Transient non-community systems
How to verify an address
Use the source trail before relying on a filing route
- 1
Identify the water provider from the property’s water bill, DPH inventory, or the state Exclusive Service Area map.
- 2
Open the utility guide when available and check its review date, testing cadence, accepted form, and submission method.
- 3
Confirm property-specific requirements with the utility before the appointment; hazards, device type, and deadlines can differ.
For testing companies
Keep every customer, assembly, and due date in one place.
Import your existing customer book and keep utility guidance attached to the work.