Water Utilities & Treatment

~THB 100B+ sector; MWA, PWA state, TTW, EASTW, BEM listed concessions, EEC industrial water, climate drivers

Last updated: Live coverage

Reports in this sector

2

Market profiles

5

Cited sources

30

Primary-grade share

67%

Key statistics

Public reference figures, each linked to source-level context.

2020-2024
~THB 100B+ (2024)

Thailand water utilities sector revenue (2020-2024)

Metropolitan Waterworks Authority, Provincial Waterworks Authority, TTW SET filings, Eastern Water Resources Development and Management, WHA Utilities and Power

2020-2024
Combined ~THB 11B (2024)

TTW and Eastern Water (EASTW) revenue (2020-2024)

TTW SET annual reports, Eastern Water Resources Development and Management, CH. Karnchang infrastructure investment disclosures, TTW Listed Company Snapshot YE2024

2024 demand share
Municipal ~70%

Thailand water demand: municipal vs industrial split

Thailand Board of Investment, Hydro-Informatics Institute, Metropolitan Waterworks Authority, Provincial Waterworks Authority, EASTW investor presentations

2020-2024 end-rainy-season storage
~14-18 BCM

Chao Phraya basin reservoir storage (2020-2024)

Royal Irrigation Department, Hydro-Informatics Institute, ADB SEADS basin report, ReliefWeb RID Chao Phraya drought response

FY2023-2024 operational baseline
~6.0M m3/day

MWA Bangkok daily water delivery

Metropolitan Waterworks Authority, MWA operational disclosures, World Benchmarking Alliance Urban benchmarks, Wikipedia compiled MWA statistics

FY2024
74 provinces

PWA provincial water network coverage

Provincial Waterworks Authority, PWA Annual Report, Bangkok Post PWA 2024 drought relief launch, TTW concession disclosures

installed capacity as of 2024
~24,000-25,000 m3/day

Patong-Phuket desalination and reuse capacity

UNESCAP Phuket water management briefing, IWA Publishing wastewater reclamation trends in Thailand, NSTDA open archive, AIT-Visu wastewater reuse potentials paper

FY2024
~34% safely treated

Thailand wastewater treatment coverage

UN SDG 6 data, Thai-German Cooperation DSPOT programme, IWA Publishing wastewater reclamation trends, Pollution Control Department

2023–2024
~2.4M connections (Bangkok Metro)

Metropolitan Waterworks Authority (MWA) Service Connections

MWA Annual Report, Ministry of Interior

2023–2024
~230 provinces and districts; ~3.7M connections

Provincial Waterworks Authority (PWA) Service Coverage

PWA Annual Report, ONWR Thailand

FY2023–2024
~THB 3B–4B

Eastern Water Resources Development (EASTW) Annual Revenue

EASTW Annual Report, SET filings

2024–2030 (forecast)
~2–3x current Eastern Seaboard volumes

EEC Industrial Water Demand Forecast (2030)

EEC Office, ONWR, EASTW investor presentations

2022–2024
~20–30% (utility average)

Thailand Non-Revenue Water (NRW) Rate

MWA Annual Report, PWA Annual Report, ONWR 20-Year Water Plan

Market profiles in this sector

5 free profiles tied to reports, filings, regulations, and source-backed context.

Browse Market Atlas →

Available reports

Thailand Water Utilities Market Intelligence

Thai water: MWA, PWA state municipal, TTW, EASTW, BEM listed concessions, industrial. ~THB 100B+ sector; climate, drought, EEC industrial demand drive cycle.

Thailand Water Utilities Supply & Treatment Market Intelligence

Thai water utilities ~THB 105B FY2024 sector. MWA, PWA state monopolies dominate municipal retail. TTW, EASTW, UU, WHAUP, BEM listed concessions. EEC industrial demand, 2024 drought, 2025 La Nina rainfall, desalination pilots shape capex.

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Full sector report

Thailand Water Utilities Market Intelligence

15 min read · 2026 Edition

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Water Utilities & Treatment · Insight