---
schema_version: "secwatch.filing_event.v1"
accession: "0001410636-26-000113"
form_type: "8-K/A"
ticker: "AWK"
cik: "0001410636"
company_name: "American Water Works Company, Inc."
filed_at: "2026-07-06T20:21:42+00:00"
generated_at: "2026-07-06T20:23:14.124592+00:00"
event_type: "regulatory"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Missouri American Water files rate request seeking $179M annual revenue increase, driven by $1.6B investments

## Summary
- Request filed with MoPSC for $179M annualized incremental revenue, plus $32M in infrastructure surcharges.
- Driven by $1.6B in capital investments from June 2025 through May 2028 for water and wastewater upgrades.
- Proposed ROE of 10.50% with 50.3% equity; new rates expected to take effect June 2027.
- Average residential bill in St. Louis County would rise ~$23/month; outside county ~$15/month.
- Investments include 140 miles of pipeline replacement, lead service line removal, and PFAS treatment upgrades.

## SEC filing metadata
- accession: 0001410636-26-000113
- form_type: 8-K/A
- ticker: AWK
- cik: 0001410636
- company_name: American Water Works Company, Inc.
- filed_at: 2026-07-06T20:21:42+00:00
- event_type: regulatory
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1410636/000141063626000113/0001410636-26-000113-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1410636/000141063626000113/awk-20260701.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001410636-26-000113
- JSON: https://secwatch.observer/filing/0001410636-26-000113.json
- Plain text: https://secwatch.observer/filing/0001410636-26-000113.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.