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The quality of water being supplied is tested regularly. Click here for a summary of test results taken island-wide.
Schemes which are presently in operation
| Region | Scheme | Total no. of Connections end of Jan 2020 | Average Monthly Production (m3/ month) |
| Dehiwala Region | Dehiwala | 62,849 | 3,659,839 |
| Moratuwa | 48,588 | ||
| Kalutara Region | Wadduwa | 17,385 | 274,875 |
| Kalutara | 18,794 | 482,845 | |
| Bombuwala | 3,538 | 70,510 | |
| Pilaminawatte | |||
| Payagala | 10,483 | 217,766 | |
| Beruwala | 11,402 | 272,327 | |
| Aluthgama | 10,837 | 169,600 | |
| Matugama | 479 | 10,366 | |
| Panadura/Horana Region | Horana | 14,222 | 349,948 |
| Bandaragama | 18,108 | 341,000 | |
| Keselwatte | 45,339 | 1,034,687 | |
| Panadura | |||
| Ingiriya | 1,354 | 21,290 | |
| Kubuka | 11,905 | 210,242 | |
| Total | 275,283 | 7,115,295 | |
Service Standard Indicators
| Service Indicators |
At end of January 2020 |
| Regional Average | |
| Water Coverage (%) Pipe System maintained by NWSDB | 56.85% |
| Water Availability (hours) | 24 |
| Water Quality - Bacteriological Quality Compliance | 100% |
| Water Quality - Bacteriological Testing Compliance | 100% |
| Water Quality - All Samples Compliance | 100% |
Operational Indicators
| Operational Indicators |
At end of January 2020 |
| Regional Average | |
| Non-Revenue Water (%) | 24.69% |
| Defective Meters per '000 connections | 3.65 |
| Operational Staff/ 1000 connection | 2.63 |
| Estimated Bills/ 1000 connections | 16.76 |
Performance in Customer Service
| Customer Service Indicators | At end of January 2020 |
| Regional Average | |
| Response to requests for new service connections (%) | 100% |
| Customer Complaints Volume (Complaints/ 1000 connection) | 36.33 |
| Customer Complaints Sold |
Key Performance Indicators (KPIs)
| Financial KPIs | At end of January 2020 |
| Regional Average | |
| Accounts Receivable Period (months) | 1.30 |
| Operating Ratio | 0.49 |
| Stock Efficiency (LKR/ connection) | 1,280.99 |
Repository on Supply of Water in the RSC Western South Data book for RSC (W-S) click here to download the book