What type of controllers does MWELO require for irrigation?

The California Model Water Efficient Landscape Ordinance (MWELO) mandates the use of smart controllers for irrigation systems, which can utilize either evapotranspiration (ET) data or soil moisture sensors. These smart controllers are designed to optimize water usage by tailoring irrigation schedules to the actual needs of the landscape, taking into account local weather conditions and moisture levels in the soil.

This technology helps to prevent overwatering, reduces water waste, and ensures that plants receive the appropriate amount of water based on their specific requirements and environmental conditions. The focus on efficiency in landscape irrigation aligns with California's broader goals of water conservation and sustainable water management, particularly in light of the state's recurring drought conditions. By employing smart controllers, landscape architects and irrigation professionals can significantly enhance the overall effectiveness of irrigation practices within the guidelines set forth by MWELO, fostering responsible stewardship of water resources in landscaping.