---
schema_version: "secwatch.filing_event.v1"
accession: "0001410636-25-000119"
form_type: "8-K"
ticker: "AWK"
cik: "0001410636"
company_name: "American Water Works Company, Inc."
filed_at: "2025-05-22T23:59:59+00:00"
generated_at: "2026-05-20T17:59:42.337213+00:00"
event_type: "regulatory"
sentiment: "positive"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Iowa American Water granted $12.7M annualized rate increase by IUC

## Summary
- IUC approved $12.7M annualized revenue increase for Iowa American Water, excluding $0.9M surcharges.
- Authorized ROE of 9.60% on rate base of $262.1M; increase driven by over $157M capital investments.
- Interim rates effective May 11, 2024; final effective date set after IUC review of rate filing.
- Parent American Water Works (AWK) benefits from subsidiary's regulatory outcome.

## SEC filing metadata
- accession: 0001410636-25-000119
- form_type: 8-K
- ticker: AWK
- cik: 0001410636
- company_name: American Water Works Company, Inc.
- filed_at: 2025-05-22T23:59:59+00:00
- event_type: regulatory
- sentiment: positive
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1410636/000141063625000119/0001410636-25-000119-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1410636/000141063625000119/awk-20250521.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001410636-25-000119
- JSON: https://secwatch.observer/filing/0001410636-25-000119.json
- Plain text: https://secwatch.observer/filing/0001410636-25-000119.txt

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