0001410636 2026-07-01 2026-07-01 2026-07-01 0001410636 true 8-K/A 2026-07-01 American Water Works Company, Inc. 001-34028 DE 51-0063696 1 Water Street Camden NJ 08102-1658 856 955-4001 false false false false Common stock, par value $0.01 per share AWK NYSE false American Water Works Company, Inc. is filing this amendment to its Current Report on Form 8-K originally filed with the Securities and Exchange Commission on July 1, 2026 (the “Original Form 8-K”), solely to correct the “document period end date” element of the Original Form 8-K’s cover page XBRL tags, provided as noted below under Exhibit 104, which inadvertently referenced an incorrect date. No other changes have been made to the disclosures contained in Items 8.01 and 9.01 of the Original Form 8-K or Exhibit 99.1 thereto. 2026-07-01 2026-07-01