What American Water Works Company, Inc. told the SEC could break it.

Stringent water-quality/environmental rules (PFAS-driven capex, EPA standards, SWRCB Carmel River diversion-reduction orders requiring Cal Am's $324M Water Supply Project) drive significant compliance cost and capital spend.

“Cal Am has incurred $324 million in aggregate costs as of December 31, 2025, related to the Water Supply Project, which includes $107 million in AFUDC.”

Earnings depend on state-PUC rate/cost-recovery proceedings and revenue-stability mechanisms; the company also faces municipal eminent-domain/condemnation risk (e.g., ongoing Cal Am Monterey system litigation).

“the use by municipalities of the power of eminent domain or other authority to condemn the systems of one or more of the Company's utility subsidiaries, including without limitation litigation and other proceedings with respect to the water system assets of the Company's California subsidiary (“Cal Am”) located in Monterey, California (the “Monterey system assets”), or the assertion by private landowners of similar rights against such utility subsidiaries;”

American Water agreed (Oct 26, 2025) to a stock-for-stock merger with Essential Utilities (0.305 AWK shares per Essential share), expected to close by end of Q1 2027 — a large combination with attendant approval and integration risk.

“The Essential Merger Agreement provides that, upon the completion of the proposed merger, Essential's shareholders will receive 0.305 shares of parent company common stock in exchange for each share of Essential common stock eligible for exchange in the merger. Upon completion of the proposed merger, Essential will be a wholly owned subsidiary of parent company ... The Company currently estimates that the closing of the proposed merger will occur by the end of the first quarter of 2027.”

Operations depend on supply of pipe, chemicals, power and fuel; price increases are largely recoverable through rates, but supplier non-performance or supply-chain disruption could materially affect operations.

“The Company's risks associated with price increases for chemicals, electricity and other commodities are reduced through contractual arrangements and the expected ability to recover price increases through rates, in the next general rate case proceeding or other regulatory mechanism, as authorized by each regulatory jurisdiction. Non-performance by these commodity suppliers could have a material adverse impact on the Company's results of operations, financial position and cash flows.”