A new interconnection is a new source of water from a finished water source. These may be emergency interconnections (used 14 days or less per calendar year) or permanent interconnections (used more than 14 days per calendar year). As a new source of water, a new interconnection does require submittal of a PWS permit application package. The permit application package shall include:
- Module 3C: Interconnection (3900-PM-BSDW0254D)
- The purchasing agreement between the PWSs
- A description of the materials used
- A quantity analysis
- An updated comprehensive monitoring plan
- An inter-water system coordination plan
- Items 1-10 on the PWS Permit Applications webpage
Additionally, systems with an interconnection to a seller/parent system which withdraws surface water must apply for a Subsidiary Water Allocation Permit.