| | | | | |
| Name | Jurisdiction of Organization |
| H2O America Land Company | California |
| San Jose Water Company | California |
| Chester Realty, Inc. | Connecticut |
| Connecticut Water Service, Inc. | Connecticut |
| The Connecticut Water Company | Connecticut |
| New England Water Utility Services, Inc. | Connecticut |
| H2O America NE LLC | Delaware |
| National Water Utility Service, LLC | Delaware |
| The Maine Water Company | Maine |
| H2O America TX Holdings, Inc | Texas |
| SJWTX, Inc., dba The Texas Water Company | Texas |
| Texas Water Operation Services LLC | Texas |
| H2O America Risk Solutions, Inc. | Utah |