; or (iii) addressing ground well water contamination. (2) Terms and amounts for loans and subgrants (A) Terms of loans A loan made with grant funds under this section— (i) shall have an interest rate of 1 percent; and (ii) shall have a term not to exceed 20 years. (B) Amounts A loan or subgrant made with grant funds under this section shall not exceed $20,000 for each water well system or decentralized wastewater system described in paragraph (1). (3) Administrative expenses A recipient of a grant made under this section may use grant funds to pay administrative expenses associated with providing the assistance described in paragraph (1), as determined by the Secretary. (4) Water treatment standards Water treatment provided under this section shall— (A) incorporate components that are third-party certified as compliant with relevant consensus-based standards for drinking water treatment units or systems, as determined by the Secretary