; and (B) under which the use of excess capacity in a Bureau conveyance facility for carriage of non-Reclamation project water for aquifer recharge is allowed. (b) Aquifer recharge on eligible land (1) In general Subject to paragraphs (3) and (4), a holder of a water service or repayment contract for a Reclamation project may— (A) directly use water available under the contract for aquifer recharge on eligible land; or (B) enter into an agreement with an individual or entity to transfer water available under the contract for aquifer recharge on eligible land. (2) Authorized project use Notwithstanding any other provision of law, the use of water for aquifer recharge under paragraph (1) shall be considered an authorized use for the Reclamation project under the reclamation laws. (3) Modifications to contracts The Secretary may modify an existing water contract described in paragraph (1) if the Secretary determines that the modification is— (A) necessary to allow for the use of water available under the contract for aquifer recharge under this subsection; (B) in the best interest of the Reclamation project and the United States; and (C) approved by the association of water users that is responsible for repaying the cost of construction, operations, and maintenance of the facility that delivers the water under the contract. (4) Requirements The use or transfer of water for aquifer recharge under this subsection shall be subject to the requirements that— (A) the use or transfer shall not be implemented in a manner that is detrimental to any water or power service for the Reclamation project; and (B) before the use or transfer, the Secretary shall determine that the use or transfer— (i) (I) results in a net water storage benefit for the Reclamation project; or (II) contributes to the recharge of a depleted aquifer on eligible land