| SHIDIFU WATER PURIFICATION TECHNOLOGY (HK) LIMITED | Private company limited by shares | Live |
| APLICAT WATER TECHNOLOGIES (HK) LIMITED | Private company limited by shares | Live |
| SILVER WATER TECHNOLOGIES PVT (HK) LIMITED | Private company limited by shares | Live |
| UCL WATER TECHNOLOGY (HK) LIMITED | Private company limited by shares | Live |
| CNC (H.K.) WATER TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| WATER SMART TECHNOLOGY (HK) LIMITED | Private company limited by shares | Live |
| EVERBRIGHT WATER TREATMENT (H.K.) LIMITED | Private company limited by shares | Dissolved |
| UNITED WATER RESOURCE (HK) INVESTMENT LIMITED | Private company limited by shares | Live |
| Veolia Water Solutions & Technologies (HK) Limited | Private company limited by shares | Live |
| VICTORY WATER (HK) LIMITED | Private company limited by shares | Dissolved |
| WAPOTEC WATER TECHNOLOGY (HK) LIMITED | Private company limited by shares | Dissolved |
| Watts Water Technologies (HK) Holding Limited | Private company limited by shares | Live |
| WHEELABRATOR WATER TECHNOLOGIES (HK) CO. LIMITED | Private company limited by shares | Dissolved |
| YOUNIO WATER METER (HK) CO., LIMITED | Private company limited by shares | Live |
| KERRY CQ WATER (HOHHOT) LIMITED | Private company limited by shares | Live |
| WATER HOLDING LIMITED | | Live |
| Ecolab Water Holding Limited | Private company limited by shares | Live |
| WATER RESOURCES (ANPING) INVESTMENTS HOLDING COMPANY LIMITED | Private company limited by shares | Live |
| GT Water Holdings Limited | Private company limited by shares | Live |
| Biyuan Water Holdings Company Limited | Private company limited by shares | Live |
| Bright Water Holdings Limited | Private company limited by shares | Live |
| DO LONG WATER BUSINESS HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| CHINA WATER HOLDINGS COMPANY LIMITED | Private company limited by shares | Dissolved |
| CHINA WATER RESOURCES INVESTMENT (HOLDINGS) LIMITED | Private company limited by shares | Live |
| CHINA WATER RESOURCES HOLDINGS LIMITED | Private company limited by shares | Live |
| Clear Water Holdings Limited | Private company limited by shares | Live |
| CHINA WATER & ENERGY HOLDINGS LIMITED | Private company limited by shares | Live |
| EVER PROSPEROUS WATER UTILITY HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| EVERBEST WATER HOLDINGS COMPANY LIMITED | Private company limited by shares | Live |
| WATER FAIRIES HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| WATER FLOWER HOLDINGS LIMITED | Private company limited by shares | Live |
| STRATEGIC WATER GROUP (HOLDINGS) LIMITED | Private company limited by shares | Live |
| Red Water (Hong Kong) Holdings Limited | | Live |
| HONG KONG MAGNETIZED WATER (HOLDINGS) LIMITED | Private company limited by shares | Dissolved |
| HONG KONG WATER WOOD HOLDINGS LIMITED | Private company limited by shares | Live |
| Sky Water Investment Holdings Limited | Private company limited by shares | Live |
| Space Water Investment Holdings Limited | Private company limited by shares | Live |
| Jade Water Holdings Limited | Private company limited by shares | Live |
| Everbright Water (Ji'nan) Holdings Limited | Private company limited by shares | Live |
| WATER MARK HOLDINGS LIMITED | Private company limited by shares | Live |
| Water Oasis Shanghai Holdings Limited | Private company limited by shares | Live |
| ANGLO WATER OVERSEAS HOLDINGS COMPANY LIMITED | Private company limited by shares | Live |
| EVERBRIGHT WATER (QINGDAO) HOLDINGS LIMITED | Private company limited by shares | Live |
| Asia Water Resources (Holdings) Limited | Private company limited by shares | Dissolved |
| Water Scientific Holdings Limited | Private company limited by shares | Dissolved |
| LAO SHAN MINERAL WATER (HOLDINGS) LIMITED | Private company limited by shares | Dissolved |
| S.I. United Water Holdings Limited | Private company limited by shares | Live |
| SouthChina Water Holdings Limited | Private company limited by shares | Dissolved |
| HAND STONE WATER HOLDINGS LIMITED | Private company limited by shares | Live |
| Everbright Water (Suizhou) Holdings Limited | Private company limited by shares | Live |
| CHINESE WATER TECHNOLOGIES HOLDINGS LIMITED | Private company limited by shares | Live |
| ADVANCED WATER TREATMENT TECHNOLOGIES HOLDINGS LIMITED | Private company limited by shares | Live |
| Water Technology Holdings Limited | Private company limited by shares | Live |
| Wind Water Holdings Limited | Private company limited by shares | Dissolved |
| Water Wood Holdings Limited | Private company limited by shares | Live |
| Everbright Water (Wuxi) Holdings Limited | Private company limited by shares | Live |
| Everbright Water (Xuzhou) Holdings Limited | Private company limited by shares | Live |
| Everbright Water (Zibo) Holdings Limited | Private company limited by shares | Live |
| HOLLAND WATER COMPANY LIMITED | Private company limited by shares | Live |
| Water Air Sun & Home Company Limited | Private company limited by shares | Live |
| HOMES WATER SYSTEMS LIMITED | Private company limited by shares | Live Commenced dormancy on 22-Aug-2016 |
| Abengoa Water Hong Kong, Co. Limited | Private company limited by shares | Live |
| HONG KONG WATER SKI ASSOCIATION LIMITED | Company limited by guarantee | Live |
| HONG KONG BAMA WATER LIMITED | Private company limited by shares | Live |
| HONG KONG WATER BOAT LIMITED | Private company limited by shares | Live |
| CAMBRIDGE WATER TECHNOLOGY (HONG KONG) LIMITED | Private company limited by shares | Live |
| CHIN HONG WATER ELECTRIC ENGINEERING LIMITED | | Live |
| CHINA WATER AND ELECTRIC (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| CHINA WATER COMPANY (HONG KONG) LIMITED -THE- | Private company limited by shares | Dissolved |
| HONG KONG & CHINA WATER LIMITED | Private company limited by shares | Live Commenced dormancy on 01-Feb-2005 |
| China (Hong Kong) Water Resources Limited | Private company limited by shares | Live |
| Clean Water Hong Kong Limited | Private company limited by shares | Live |
| AIR WATER HONG KONG CO., LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Tian Yuan Water Co., Limited | | Live |
| DIAMOND MINERAL WATER COMPANY (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| HONG KONG OASIS DISTILLED WATER COMPANY LIMITED | Private company limited by shares | Dissolved |
| Water Drop Hong Kong Co. Limited | Private company limited by shares | Live |
| Fiji Water Hong Kong Limited | Private company limited by shares | Live |
| FINEST WATER (HONG KONG) LIMITED | Private company limited by shares | Live |
| HONG KONG WATER FOCUS LIMITED | Company limited by guarantee | Live |
| Hong Kong and China Water (Foshan) Limited | Private company limited by shares | Live |
| CHINA WATER FULL (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| HONG KONG GREEN WATER MINING LIMITED | | Live |
| WATER GREENLAND (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| Hong Kong O.Best International Water Industry Group Responsibility Co., Limited | Private company limited by shares | Live |
| HONG KONG WATER GROUP COMPANY LIMITED | Private company limited by shares | Dissolved |
| HONG KONG WATER GROUP COMPANY LIMITED | Private company limited by shares | Live |
| INNA WATER HONG KONG LIMITED | Private company limited by shares | Live |
| Water Eye (Hong Kong) Investment Co. Limited | Private company limited by shares | Live |
| HONG KONG WATER COMPANY LIMITED | Private company limited by shares | Dissolved |
| WATER (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| Are Water Hong Kong Limited | Private company limited by shares | Live |
| HONG KONG ONE WATER LIMITED | | Live |
| Water Bear Capital (Hong Kong) Limited | Private company limited by shares | Live |
| Water Skin (Hong Kong) Cosmetic Limited | Private company limited by shares | Live |
| Kingtop Water Investment Hong Kong Company Limited | Private company limited by shares | Live |
| Quantization Water (Hong Kong) Limited | Private company limited by shares | Dissolved |
| RQY WATER ELEMENT (HONG KONG) TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Hong Kong and China Water (Maanshan) Limited | Private company limited by shares | Live |
| MAGIC WATER (HONG KONG) LIMITED | Private company limited by shares | Live |