; and (bb) the accuracy of information presented, and risk communication, in consumer confidence reports; and (II) with respect to community water systems that serve 10,000 or more persons, to require each such community water system to provide, by mail, electronic means, or other methods described in clause (ii), a consumer confidence report to each customer of the system at least biannually. (ii) Electronic delivery Any revision of regulations pursuant to clause (i) shall allow delivery of consumer confidence reports by methods consistent with methods described in the memorandum Safe Drinking Water Act—Consumer Confidence Report Rule Delivery Options issued by the Environmental Protection Agency on January 3, 2013. . 3. Contractual agreements (a) In general Section 1414(h)(1) of the Safe Drinking Water Act ( 42 U.S.C. 300g–3(h)(1) ) is amended— (1) in subparagraph (B), by striking or after the semicolon; (2) in subparagraph (C), by striking the period at the end and inserting ; or