Water Conservation
In 2007, the 80th Texas Legislature amended Section 13.146 of the Texas Water Code to require each retail public utility that provides potable water service to 3,300 or more connections to submit a water conservation plan to the Texas Water Development Board no later than May 1, 2009. On April 27, 2009, the City Council adopted a City Water Conservation Plan and approved submission of the plan to the Texas Water Development Board.
The City of Alamo Heights’ sole source of water is the Edwards Aquifer which is one of the world’s most unique groundwater resources. The aquifer covers over a 3,000 square mile area. In 2008, the Edwards Aquifer Authority (EAA) implemented new Stage Water Restrictions which reduce the amount of water that may be pumped by a water utility during drought conditions. The adopted Stage Water Restrictions are as follows:
| Critical Period (Reduction) Stage* | Index Well J-17 Level (MSL) | San Marcos Spring Flow (CFS) | Comal Springs Springs Flow (CFS) | Withdrawal Reduction – San Antonio Pool |
| I | <660 | <96 | <225 | 20% |
| II | <650 | <80 | <200 | 30% |
| III | <640 | N/A | <150 | 35% |
| IV | <630 | N/A | <100 | 40% |
* Implementation of Stage I is based on a 10-day average. A change to a critical period stage with higher withdrawal reduction percentages is triggered if the 10-day average of daily springflows at the Comal Springs or the San Marcos Springs or the 10-day average of daily aquifer levels at the J-17 Index Well drops below the lowest number of any of the trigger levels. A change to a critical period stage with lower withdrawal reduction percentages is triggered only when the 10-day average of daily springflows at the Comal Springs or the San Marcos Springs and the 10-day average of daily aquifer levels at the J17 Index Well are all above the same stage trigger level.