TSIC Activity
Wastewater Management (Sewerage)
ประกอบกิจการบริการเกี่ยวกับระบบน้ำเสียหรือการบำบัดน้ำเสียอย่างถูกวิธี
What this activity covers
Companies in this sector manage and treat wastewater from various sources using a range of methods and systems.
- Wastewater Treatment — Operations for treating wastewater from communities and industrial plants
- Collection Services — Transporting wastewater to collection systems
- Septic Tank Maintenance — Cleaning and maintaining septic tanks and drainage systems
- Waste Disposal — Disposing of waste and treating wastewater
- Water Quality Services — Providing services to ensure water quality
- System Management — Managing and operating wastewater treatment systems
What companies here also do
Seen in real company registrations under this code — beyond the official definition, so licensing may differ.
- Environmental Consulting — Advising on water pollution control and environmental issues
- Pipe Cleaning — Cleaning and unblocking drainage pipes
- System Installation — Designing and installing wastewater treatment systems
Industry at a glance
as of 23 ก.ค. 69The whole registered industry under this activity, every registration year, from the DBD DataWarehouse.
net profitrevenue
Foreign investment
new registrations · 2026 YTDForeigners are strongly represented in new investment under this activity.
1 of the 5 largest companies here are foreign-owned Thailand subsidiaries.
New in 2026
registrations, YTD
Registered capital
since year-end
Largest by revenue
Latest filed-year revenue, not a multi-year total
Largest by registered capital
- 1C & G Environmental Protection (Thailand) Co., Ltd.intlBangkok฿2.0B
- 2Betagro Land Co., Ltd.Bangkok฿550.0M
- 3UTILITY BUSINESS ALLIANCE CO., LTD. (PUBLIC)Bangkok฿300.0M
Source: Department of Business Development DataWarehouse. Financial figures are combined totals of companies that filed statements; revenue and profit shown for the latest three reporting years.
Companies registered since 2022
Browse allNew DBD registrations under this activity since 2022, the period the registry snapshot covers, not the full historical register.
New registrations per year
Largest active companies by registered capital
- UTILITY BUSINESS ALLIANCE CO., LTD. (PUBLIC)Public limited company · กรุงเทพมหานคร฿300.0M
- SIAM ENVIRONMENTAL TECHNOLOGY PUBLIC COMPANY LIMITEDPublic limited company · สมุทรปราการ฿122.5M
- S. NAPHA WATER RAYONG CO., LTD.Private limited company · กรุงเทพมหานคร฿95.0M
- SU ZHENG TECHNOLOGY (THAILAND) CO., LTD.Registered ordinary partnership · ระยอง฿5.0M
- VITAL SIAM SOLUTION CO., LTD.Private limited company · ปทุมธานี฿5.0M
- AQUA NISHIHARA ENVIRONMENT CO., LTD.Private limited company · กรุงเทพมหานคร฿5.0M
- WATER SENTIENT CO., LTD.Registered ordinary partnership · ชลบุรี฿5.0M
- LINK TO LINK DRAINAGE SOLUTION CO., LTD.Private limited company · กรุงเทพมหานคร฿5.0M
- MILITECH SERVICE AND TECHNOLOGY CO., LTD.Private limited company · กรุงเทพมหานคร฿5.0M
- D.C. M&E ENGINEERING CO., LTD.Private limited company · ปทุมธานี฿5.0M
- SIKON ENGINEERING AND CONSTRUCTION CO., LTD.Private limited company · กรุงเทพมหานคร฿5.0M
- บจ.ฮวนเหม่ย เทคโนโลยีสิ่งแวดล้อม (ประเทศไทย) จำกัดPrivate limited company · นนทบุรี฿5.0M
Source: Department of Business Development (DBD) new-registration records, 2022 to present. Counts cover companies first registered in that window, reflect the latest snapshot load, and may lag the live register.
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