# EDGAR Filing Document

**Accession Number:** 0001410636
**File Stem:** 9999999995-25-003962
**Filing Date:** 2025-12
**Character Count:** 1283
**Document Hash:** 0c4f0326edd37b89b47391afc5fc4543
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**9999999995-25-003962.hdr.sgml**: 20251231

**ACCESSION NUMBER**: 9999999995-25-003962

**CONFORMED SUBMISSION TYPE**: EFFECT

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20251230

**DATE AS OF CHANGE**: 20251231

**EFFECTIVENESS DATE**: 20251230

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** American Water Works Company, Inc.
- **CENTRAL INDEX KEY:** 0001410636
- **STANDARD INDUSTRIAL CLASSIFICATION:** WATER SUPPLY [4941]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 510063696
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** EFFECT
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-292182
- **FILM NUMBER:** 251615638

**BUSINESS ADDRESS:**
- **STREET 1:** 1 WATER STREET
- **CITY:** CAMDEN
- **STATE:** NJ
- **ZIP:** 08102-1658
- **BUSINESS PHONE:** 856-955-4001

**MAIL ADDRESS:**
- **STREET 1:** 1 WATER STREET
- **CITY:** CAMDEN
- **STATE:** NJ
- **ZIP:** 08102-1658

### UNITED STATES
### SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## Notice of Effectiveness

**Date:** December 30, 2025

**Time:** 17:00:00

**Form Type:** S-4

---

**CIK:** 0001410636

**Company Name:** American Water Works Company, Inc.

**File Number:** 333-292182