§ 245.307. Affected or diminished water supplies.

 (a)  A responsible party who affects or diminishes a water supply as a result of a release shall restore or replace the affected or diminished supply with an alternate source of water adequate in quantity and quality for the purposes served by the supply, at no cost to the owner of the affected or diminished water supply.

 (b)  Where a responsible party restores or replaces an affected or diminished water supply by providing access to a public water system regulated under the Pennsylvania Safe Drinking Water Act (35 P. S. § §  721.1—721.17), the responsible party will not be required to pay for the quantity of water supplied to the water supply user by the public water system.

 (c)  A temporary water supply shall be provided as soon as practicable but not later than 48 hours after one of the following:

   (1)  The responsible party receives information which establishes that the responsible party has affected or diminished the water supply.

   (2)  The responsible party is notified by the Department that the responsible party has affected or diminished the water supply.

 (d)  A permanent water supply shall be provided within 90 days, or within an alternative time frame as determined by the Department, after one of the following:

   (1)  The responsible party receives information which establishes that the responsible party has affected or diminished the water supply.

   (2)  The responsible party is notified by the Department that the responsible party has affected or diminished the water supply.

   This section cited in 25 Pa. Code §  245.306 (relating to interim remedial actions); and 25 Pa. Code §  245.309 (relating to site characterization).