| No. | Shareholder | Number of Shares | Percentage (%) |
|---|---|---|---|
| 1 | Provincial Waterworks Authority | 668,800,000 | 40.20% |
| 2 | The Manila Water Company Inc. | 311,443,190 | 18.72% |
| 3 | Industrial Estate Authority of Thailand | 76,000,000 | 4.57% |
| 4 | Aberdeen Small Cap Fund | 33,786,000 | 2.03% |
| 5 | Thanachart Low Beta | 30,996,200 | 1.86% |
| 6 | BNP PARIBAS SECURITIES SERVICES, LONDON BRANCH | 29,812,100 | 1.79% |
| 7 | Aberdeen Growth Fund | 27,505,000 | 1.65% |
| 8 | Aberdeen Long Term Equity Fund | 27,465,700 | 1.65% |
| 9 | Thanachart Prime Low Beta | 27,170,600 | 1.63% |
| 10 | Mr.Min Tieanworn | 22,330,000 | 1.34% |
| Others | 408,416,359 | 24.55% | |
| Total Number of Shares (Share) | 1,663,725,149 | 100.00% |