; (B) $1,225 for each lease or unit or communitization agreement with 1 to 10 wells, with any combination of active or inactive wells; (C) $4,900 for each lease or unit or communitization agreement with 11 to 50 wells, with any combination of active or inactive wells; and (D) $9,800 for each lease or unit or communitization agreement with more than 50 wells, with any combination of active or inactive wells. (3) Due date Payment of the fee under this section shall be due not later than 30 days after the Secretary provides notice of the assessment of the fee. (4) Penalty If the designated operator fails to pay the full amount of the fee as prescribed in this section, the Secretary may, in addition to utilizing any other applicable enforcement authority, assess civil penalties against the operator under section 109 in the same manner as if this section were a mineral leasing law. . (b) Assessment for fiscal year 2018 The Secretary of the Interior shall assess the fee under the amendment made by subsection (a) for fiscal year 2018, and provide notice of such assessment to each designated operator who is liable for such fee, by not later than 60 days after the date of the enactment of this Act. 423. Protection of water resources (a) Mineral Leasing Act requirements Section 17 of the Mineral Leasing Act ( 30 U.S.C. 226 ) is amended by adding at the end the following: (r) Water requirements (1) An operator producing oil or gas (including coalbed methane) under a lease issued under this Act shall— (A) replace the water supply of a water user who obtains all or part of such user’s supply of water for domestic, agricultural, or other purposes from an underground or surface source that has been affected by contamination, diminution, or interruption proximately resulting from drilling operations for such production