---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-23-109889"
form_type: "8-K"
ticker: "CWT"
cik: "0001035201"
company_name: "CALIFORNIA WATER SERVICE GROUP"
filed_at: "2023-10-18T23:59:59+00:00"
generated_at: "2026-06-09T21:35:57.290961+00:00"
event_type: "regulatory"
sentiment: "positive"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Cal Water files CPUC advice letter; ROE rises to 10.27% effective Jan 1, 2024

## Summary
- Authorized ROE increases 70 bps to 10.27% from 9.57% effective Jan 1, 2024.
- Authorized rate of return increases 38 bps to 7.46% from 7.08% effective Jan 1, 2024.
- Estimated to increase annual operating revenue for fiscal 2024 by approximately $10 million.
- Cost of debt of 4.23% and capital structure (53.4% equity / 46.6% debt) unchanged.
- Triggered by WCCM: Moody’s Aa Utilities Bond Index rose approx 140 bps over measurement period.

## SEC filing metadata
- accession: 0001104659-23-109889
- form_type: 8-K
- ticker: CWT
- cik: 0001035201
- company_name: CALIFORNIA WATER SERVICE GROUP
- filed_at: 2023-10-18T23:59:59+00:00
- event_type: regulatory
- sentiment: positive
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1035201/000110465923109889/0001104659-23-109889-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1035201/000110465923109889/tm2328726d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-23-109889
- JSON: https://secwatch.observer/filing/0001104659-23-109889.json
- Plain text: https://secwatch.observer/filing/0001104659-23-109889.txt

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