Thailand

Top 3 largest Thai Companies in the Utilities—Regulated Water industry by Market Cap

This is the list of the largest public listed companies in the Utilities—Regulated Water industry from Thailand by market capitalization with links to their reference stock.

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Top Utilities—Regulated Water Companies from Thailand as of Jan. 01, 2026

Rank Company Market Cap (USD) Country Sector Industry
1 TTW PCL $1.15 B Thailand Thai Utilities Thai Utilities—Regulated Water
2 WHA Utilities and Power Public Company Ltd $565.6 M Thailand Thai Utilities Thai Utilities—Regulated Water
3 Eastern Water Resources Development and Management Public Company Ltd $83.7 M

(July 1, 2025)

 Thailand Thai Utilities Thai Utilities—Regulated Water

Top Utilities—Regulated Water Companies from Thailand as of Jan. 01, 2026

1. TTW PCL

Company Profile: TTW PCL
Market Cap (USD): $1.15 B
Country: Thailand
Sector: Thai Utilities
Industry: Thai Utilities—Regulated Water

2. WHA Utilities and Power Public Company Ltd

Company Profile: WHA Utilities and Power Public Company Ltd
Market Cap (USD): $565.6 M
Country: Thailand
Sector: Thai Utilities
Industry: Thai Utilities—Regulated Water

3. Eastern Water Resources Development and Management Public Company Ltd

Company Profile: Eastern Water Resources Development and Management Public Company Ltd
Market Cap (USD): $83.7 M (July 1, 2025)
Country: Thailand
Sector: Thai Utilities
Industry: Thai Utilities—Regulated Water

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