District Responsibility Externally
The District is responsible for all street side piping and water appurtenances up to and including the curb valve and box used to shut off and turn on water suppling a building or residence. The curb valve and box are generally located near the property line and the public way.

District Responsibility Internally
The District is responsible for the maintenance and repair of the Street-Side Shut Off Valve (aka First Valve) and the Water Meter. Only the District or those authorized by the District are allowed to perform maintenance, repairs, modifications, and upgrades to the:
- Street Side Shut Off Valve (first valve) and
- Water Meter
Property Owner Responsibility Externally
Underground water service pipe, after the curb valve.
Property Owner Responsibility Internally
Excluding the Street Side Shut Off Valve (aka first valve) and the Water Meter, the Property Owner is responsible for all other plumbing appurtenances including the Owner Side Shut Off Valve (aka second valve) and Pressure Reducing Valve (PRV).
The Property Owner is also responsible to protect the Street Side Shut Off Valve and Water Meter from damage, including freezing, vandalism, theft, or other possible causes. Frozen or damaged meters will result in replacement costs billed directly to the Property Owner.

The Owner Side Shut Off Valve (aka second valve) is used to shut off the water coming into the building after the meter.

The Pressure Reducing Valve (PRV) is a bell shaped device used to reduce the street side pressure coming into the building to a level low enough to protect the interior plumbing components. Depending on the year that the PRV was initially installed it may be positioned before or after the meter, in either case the Property Owner owns and is responsible for maintenance, repairs and replacement of Pressure Reducing Valve’s.
Persons or entities seeking to perform work involving the District’s drinking water distribution system including but not limited to water main/service pipe installation, excavation, repair, relocation, or disconnection on both public and private ways/parcels must hold or acquire a valid Water Contractor License issued by the Sudbury Water District. Below is a list of the District’s Licensed Water Contractors: