About NWSDB Key Services & Initiatives Smart & Customer Services Regional Presence & Infrastructure Centre of Excellence – CEWAS Head Office & Contact Why It Matters
The National Water Supply & Drainage Board (NWSDB), founded in 1975 under Sri Lankan law, is the national authority for water supply and sanitation. Operating under the Ministry of Water Supply & Drainage, it oversees the design, construction, and management of urban and rural water and sewerage systems.
• Operation and maintenance of water supply and sewerage systems nationwide
• Implementation of new urban and rural water projects
• Sector planning, feasibility studies, detailed engineering, tendering, and contract supervision
• Research and Development through a dedicated R&D division
• Environmental & Social safeguards including water quality monitoring, climate resilience, and inclusive policies
• E-billing, SMS alerts, and NWSDB Self-Care mobile apps for account management
• Online payment portal for bills, meter services, reconnections
• 24/7 customer support via hotline (1939), WhatsApp (011 204 4800), and Facebook Messenger Chatbot
NWSDB operates through 12 Regional Support Centres across all provinces, ensuring localized service delivery, groundwater management, and rural sanitation schemes.
Hosts a world-class conference and training facility near Colombo, offering modern AV, catering, gym, parking and hospitality amenities.
Address: Galle Road, Ratmalana, Sri Lanka
Phone: +94 11 263 8999, +94 11 261 1589, +94 11 263 6449
Email: [email protected]
Hotline: 1939 (24/7)
SmartZone Apps: NWSDB Self-Care, SmartPay, Navigator, Field Services, Bill Calculator, E-bill & SMS registration
NWSDB is critical to public health and infrastructure development in Sri Lanka. It ensures reliable clean water, manages wastewater, drives innovation in water services, and provides critical frontline support during emergencies.
| Accepted Currencies: | Sri Lankan Rupees |
|---|---|
| Payment Types: | Cash, Credit Card |
| Mon |
08:30 AM - 04:15 PM |
|---|---|
| Tue |
08:30 AM - 04:15 PM |
| Wed |
08:30 AM - 04:15 PM |
| Thu |
08:30 AM - 04:15 PM |
| Fri |
08:30 AM - 04:15 PM |
| Sat | Closed |
| Sun | Closed |
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