American Water Works Company Inc

ITEM 1. LEGAL PROCEEDINGS

The following information updates and amends the information provided in the Company’s Form 10-K in Item 3—Legal Proceedings, and in our Quarterly Report on Form 10-Q for the quarter ended June 30, 2024, in Part II, Item 1—Legal Proceedings. Capitalized terms used but not otherwise defined herein have the meanings set forth in the Company’s Form 10-K and Form 10-Q. In accordance with the SEC’s disclosure rules, the Company has elected to disclose environmental proceedings involving the Company and a governmental authority if the amount of potential monetary sanctions, exclusive of interest and costs, that the Company reasonably believes will result from such proceeding is $1 million or more.

Alternative Water Supply in Lieu of Carmel River Diversions

Monterey Peninsula Water Supply Project

Water Supply Project Land Acquisition and Slant Well Site Use

The July 15, 2024, trial date previously set by the Monterey County Superior Court for the City’s May 2020 lawsuit has been vacated pending receipt of the SWRCB’s expert advisory opinion. On September 19, 2024, the SWRCB administrative hearing officer sent a letter to the court advising that the full draft report of the SWRCB advisory opinion addressing the questions referred by the court would not be received until at least November 1, 2024, and would then be likely considered by the SWRCB at its public board meeting scheduled for December 2024. The court therefore scheduled another status conference for January 28, 2025.

Regional Water Quality Control Board Approval of NPDES Permit Amendment

A requirement of the desalination plant that is a key component of the Water Supply Project is the discharge of brine through Monterey One Water's outfall. As a condition to Cal Am’s coastal development permit, an amendment of a National Pollutant Discharge Elimination System, or NPDES, permit must be obtained by Monterey One Water as the outfall owner from the Regional Water Quality Control Board (the “RWQCB”). The RWQCB must also determine that the proposed brine discharge complies with the desalination facility requirements under the California Ocean Plan. Working in cooperation with Monterey One Water staff and consultants, Cal Am prepared an application for submission to the RWQCB, which application and submission were approved by Monterey One Water's Board on September 30, 2024.

Cal Am’s Action for Damages Following Termination of Regional Desalination Project (“RDP”)

Following a hearing held on August 16, 2024, the court approved supplemental briefing on certain issues and continued the hearing to November 1, 2024. The trial date in this matter remains vacated and will be rescheduled at a later date.

Proposed Acquisition of Monterey System Assets — MPWMD Condemnation Action

MPWMD Condemnation Action

On February 26, 2024, Cal Am filed a motion requesting the Monterey County Superior Court dismiss the MPWMD’s eminent domain lawsuit seeking to condemn Cal Am’s Monterey system assets. Hearings on the motion were held on May 3, 2024, and August 23, 2024, and a decision on the motion from the court remains pending.

Dunbar, West Virginia Water Main Break Class Action Litigation

By order dated June 28, 2024, the Circuit Court set a date of December 3, 2024, for a class trial on issues relating to duty and breach of that duty. This trial will not find class-wide or punitive damages. Before trial begins, mediation is scheduled to take place during the fourth quarter of 2024.

Mountaineer Gas Company Main Break

The West Virginia Business Court has set a trial date of October 7, 2025, for the matter of Mountaineer Gas Company v. West Virginia-American Water Company.

On December 6, 2023, WVAWC initiated a process whereby Mountaineer Gas customers could file claims with WVAWC and seek payment from WVAWC of up to $2,000 in damages per affected household for the inconvenience arising from a loss of use of their appliances and documented out-of-pocket expenses as a result of the natural gas outage. In light of the diminishing number of new claims being filed, the claims process was concluded on March 8, 2024. As of September 30, 2024, a total of 593 Mountaineer Gas customers completed this claims process, and each of those customers has been paid by WVAWC an average of approximately $1,500. In return, these customers were required to execute a partial release of liability in favor of WVAWC.