; (2) charge such households, in the normal billing process, not more than the difference between the actual cost of the service provided and the amount of the payment made by the State or Indian Tribe pursuant to this section; and (3) within 45 days of providing assistance to a household pursuant to this section, notify in writing such household of the amount of such assistance. (h) State agreements with drinking water and wastewater providers To the maximum extent practicable, a State that receives a grant under this section shall enter into agreements with owners and operators of public water systems, owners and operators of treatment works, municipalities, nonprofit organizations associated with providing drinking water, wastewater, and other social services to rural and small communities, and Indian Tribes, to assist in identifying low-income households and to carry out this section. (i) Administrative costs A State or Indian Tribe that receives a grant under this section may use up to 8 percent of the granted amounts for administrative costs. (j) Federal agency coordination In carrying out this section, the Secretary shall coordinate with the Administrator of the Environmental Protection Agency and consult with other Federal agencies with authority over the provision of drinking water and wastewater services. (k) Audits The Secretary shall require each State and Indian Tribe receiving a grant under this section to undertake periodic audits and evaluations of expenditures made by such State or Indian Tribe pursuant to this section. (l) Reports to Congress The Secretary shall submit to Congress a report on the results of activities carried out pursuant to this section— (1) not later than 1 year after the date of enactment of this section