; (B) the approved installation by a qualified third-party installer of an eligible drinking water quality improvement product; (C) the purchase and approved installation by a qualified third-party installer of a replacement certified filter component; (D) the approved maintenance of an eligible drinking water quality improvement product; or (E) qualified water quality tests to support products and services described in subparagraphs (A) through (D). (2) Nonprofit organizations A nonprofit organization that receives a grant under this section shall use the grant, in a manner consistent with the uses described in paragraph (1) and as directed by the Secretary— (A) to offer qualified water quality tests for eligible end users on a voluntary basis; (B) to facilitate the analysis of qualified water quality test results for eligible end users; (C) to assist an eligible end user in determining the response options available and supporting the selection by the eligible end user of a response that best fits the needs of the eligible end user, informed by— (i) a qualified water quality test; and (ii) an understanding of the relevant plumbing systems and environmental factors that will impact point-of-use or point-of-entry water safety