Source chain
We combine SIC sector classification, SEC company coverage, and financial statistics into one industry profile.
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15 public companies · 15 exchange-listed
Source: SEC EDGAR XBRL filings and Sprytne sector aggregates. Updated 2026-03-29T05:56:57.120Z. The page is designed for comparative research, not investment advice.
Source: SEC EDGAR XBRL filings and Sprytne sector aggregates. Updated 2026-03-29T05:56:57.120Z.
Why this industry page is useful for search, retrieval, and sector benchmarking.
Source chain
We combine SIC sector classification, SEC company coverage, and financial statistics into one industry profile.
Retrieval model
The page surfaces the strongest sector signals first so Google and LLMs can jump directly into the right company graph.
Quality gate
Only sectors with real SEC-linked company coverage are published, and the page reflects the latest available source snapshot 2026-03-29T05:56:57.120Z.
Tiny provenance blocks keep this hub citation-friendly and easier for retrieval systems to chunk.
Sector core
SIC classification, SEC coverage, and benchmark stats define the sector identity layer.
Comparative layer
Top performers, state concentration, and related sectors give the page a strong internal comparison path.
Retrieval shape
Short structured blocks help Google and LLMs move from the sector overview into the right company graph.
15
Total Companies
15
Exchange Listed
13
Filed 10-K
9
States Represented
Total Sector Revenue
$10.10B
Aggregate of 12 companies with XBRL data
Avg Net Margin
-1.5%
Intensely competitive· Based on 12 filings
Sector Analysis · Sprytne.com
As of July 2026, the Water Supply sector (SIC 4941) reports a combined revenue of $10.10B across 12 SEC-tracked entities. With an average net margin of -1.5%, this industry is classified as loss-making on average. American Water Works Company, Inc. leads the sector with $5.12B in reported revenue. The data is derived exclusively from official SEC EDGAR XBRL submissions and reflects the most recently filed 10-K annual reports.
Data aggregated from SEC EDGAR XBRL submissions · Updated March 2026
| Rank | Company | Revenue | Net Income | Net Margin | vs Industry Avg |
|---|---|---|---|---|---|
| #1 | American Water Works Company, Inc.AWK | $5.12B | $1.11B | 21.7% | +23.2pp |
| #2 | Essential Utilities, Inc.WTRG | $2.47B | $616.4M | 24.9% | +26.4pp |
| #3 | CALIFORNIA WATER SERVICE GROUPCWT | $963.7M | $128.2M | 13.3% | +14.8pp |
| #4 | H2O AMERICAHTO | $805.6M | $102.6M | 12.7% | +14.2pp |
| #5 | MIDDLESEX WATER COMSEX | $191.8M | $42.8M | 22.3% | +23.8pp |
| Industry Average | $841.8M | $181.5M | -1.5% | baseline | |
AMERICAN STATES WATER CO
CIK: 0001056903 · CA · 10-K: 2026-02-18
American Water Works Company, Inc.
CIK: 0001410636 · DE · 10-K: 2026-02-18
ARTESIAN RESOURCES CORP
CIK: 0000863110 · DE · 10-K: 2026-03-16
CABO VERDE CAPITAL INC.
CIK: 0001127007 · NV · 10-K: 2024-01-29
CADIZ INC
CIK: 0000727273 · DE · 10-K: 2025-03-28
CALIFORNIA WATER SERVICE GROUP
CIK: 0001035201 · DE · 10-K: 2026-02-27
COMPANHIA DE SANEAMENTO BASICO DO ESTADO DE SAO PAULO-SABESP
CIK: 0001170858 · D5
Consolidated Water Co. Ltd.
CIK: 0000928340 · E9 · 10-K: 2026-03-16
EESTech, Inc.
CIK: 0001138867 ·
Essential Utilities, Inc.
CIK: 0000078128 · PA · 10-K: 2026-02-26
Global Water Resources, Inc.
CIK: 0001434728 · DE · 10-K: 2026-03-04
H2O AMERICA
CIK: 0000766829 · DE · 10-K: 2026-02-26
MIDDLESEX WATER CO
CIK: 0000066004 · NJ · 10-K: 2026-02-19
PURE CYCLE CORP
CIK: 0000276720 · CO · 10-K: 2025-11-12
YORK WATER CO
CIK: 0000108985 · PA · 10-K: 2026-03-03
Water Supply is the SEC SIC category used to group companies with similar business models and financial reporting patterns.
The page is refreshed from the underlying SEC-driven company index on deploy and when the cached data changes.
Some companies do not have recent usable XBRL filings or do not expose enough data for every benchmark on the page.
Use them to compare leaders, spot high-margin companies, and move into the individual company pages for deeper analysis.