| Key Statistics | 2011 | 2012 | Variation (%) | 2014 |
2015 |
Variation(%) | ||
| Water Supply | ||||||||
| Piped Water Production (million cu. m.) | 323 | 323 | - | 575 | 600 | (4.3) | ||
| Deep Wells (Nos.) | (a) | Drilled | 490 | 490 | - | 350 | 179 | (95.5) |
| (b) | Successful | 342 | 342 | - |
305 |
162 | (88.3) | |
| Non-Revenue Water (%) | (a) | Western Province | 34.03 | 32.66 | (4) | 32.20 | 30.31 | (5.9) |
| (b) | Other Provinces | 25.02 | 26.06 | (4.2) | 23.54 | 23.39 | (0.6) | |
| (c) | Island-wide | 30.36 | 29.89 | (1.5) | 28.54 | 27.30 | (4.3) | |
| Domestic Connections (Nos.) | (a) | Western Province | 630,157 | 677,427 | 7.5 | 764,500 | 804,082 | (5.2) |
| (b) | Other Provinces | 706,679 | 789,189 | 11.7 | 928,855 | 1027,467 | 10.6 | |
| Total Domestic Connections | 1,336,836 | 1,466,616 | 9.7 | 1,693,355 | 1,831,549 | 8.2 | ||
| Public Stand Posts (Nos.) | (a) | Western Province | 3,940 | 2,345 | (40.5) | 518 | 503 | (2.9) |
| (b) | Other Provinces | 2,436 | 2,403 | (1.4) | 1,261 | 1,182 | (6.3) | |
| Total Public Stand Posts | 6,376 | 4,748 | (25.5) | 1,779 | 1,685 | (5.3) | ||
| Non-Domestic Connections (Nos.) | (a) | Western Province | 57,401 | 58,595 | 2.1 | 69,148 | 74,297 | 7.4 |
| (b) | Other Provinces | 55,064 | 57,704 | 4.8 | 69,495 | 47,875 | (31.1) | |
| Total Non-Domestic Connections | 112,465 | 121,047 | 7.6 | 138,643 | 122,172 | (11.9) | ||
| Total No. of Service Connections | 1,449,301 | 1,587,663 | 9.5 | 1,831,998 | 1,953,721 | 6.6 | ||
| Average Household Monthly Consumption (cu. m. per house connection) | (a) | Western Province | 17.22 | 17.24 | 0.1 | 17.13 | 17.29 | (0.9) |
| (b) | Other Provinces | 13.16 | 13.13 | (0.2) | 12.76 | 12.48 | (2.2) | |
| Average Household Billing per Month (Rs.) | (a) | Western Province | 573.21 | 622.76 | 8.6 | 735.54 | 729.44 | (0.8) |
| (b) | Other Provinces | 319.03 | 346.06 | 8.5 | 435.05 | 405.85 | (6.7) | |
| Total Recurrent Expenditure (Rs. million) | 11,033 | 13,230* | 19.9 | 19,871 | 19,549 | (1.6) | ||
| Development Expenditure (Rs. million) | 29,337 | 29,337 | - | 35,668.26 | 27,544.18 | (22.8) | ||
| Total Revenue (Rs. million) | 13,343 | 15,088 | 13.1 | 19,785 | 20,472 | (3.5) | ||
| O&M Staff / 1,000 Connections | 5.25 | 5.1 | (2.9) | 4.78 | 4.41 | (7.7) | ||
| Total Staff / 1,000 Connections | 6.35 | 6.09 | (4.1) | 5.72 | 5.24 | (8.4) | ||
| Average O&M Cost of Water Production (Rs./ cu. m.) | 22.5 | 25.3* | 12.4 | |||||
| Collection Efficiency | 0.99 | 0.98 | (11.1) | 1.00 | 1.03 | (3.0) | ||
| Sewerage | ||||||||
| Sewerage Connections in Dehiwala - Mt. Lavinia Sewerage System | 2,413 | 2,413 | - | |||||
| Sewerage Connections in Kolonnawa Sewerage System | 1,595 | 1,595 | - | |||||
| Sewerage Connections for Institutions | 7 | 7 | - | |||||
| Sewerage Connections in Housing Schemes in Greater Colombo | 2,290 | 2,290 | - | |||||
| Sewerage Connections in Housing Schemes outside Greater Colombo and maintained by Greater Colombo Sewerage Section | 4,868 | 4,868 | - | |||||
| Total No. of Connections Maintained by Greater Colombo Sewerage Section | 11,173 | 11,173 | - | |||||
| * Abbreviations | ||
| cu. m. | : | cubic meters |
| O&M | : | Operation & Maintenance |
* Figures are estimated