Selecting High-Impact Landscape Irrigation Conservation Behaviors: Formative Research to Inform Behavior-Change Efforts
Authors: Warner Laura A. , Diaz John M. , Dukes Michael D. 
Published: January 2022

Background

This work addresses the increasing prevalence of water scarcity. Droughts are projected to worsen as a result of climate change and urbanization, increasing the need for all sectors to reduce the amount of water used. Home landscape irrigation represents an important opportunity to reduce water use in the United States.

Focus of the Article

This formative research study used social marketing techniques to estimate potential impact of irrigation water conservation behaviors, weight and prioritize the behaviors to guide behavior selection in the context of residential irrigation conservation.

Research Objective

The objectives were to estimate (1) the potential impact of, (2) current adoption levels and likelihood of adoption of, and to (3) prioritize various landscape irrigation water conservation behaviors.

Program Design/Approach

When addressing any issue, including water scarcity, identifying target behaviors is the first, foundational step for a successful social marketing campaign. This research focuses on formative social marketing research to inform local interventions designed to reduce the amount of water applied to residential yards across the United States.

Importance to the Social Marketing Field

This study outlines a process to compare and prioritize water conservation behaviors with the goal of reducing residential landscape irrigation usage. We demonstrate a technique for obtaining this type of formative research, the lack of which can serve as a barrier to change agents promoting behaviors in any context.

Methods

We employed a two-pronged quantitative survey research approach to collect technical experts’ impact ranking and U.S. residents’ current adoption levels and likelihood of adopting potential irrigation water conservation behaviors. The 14-member expert panel was selected using purposive and snowball sampling techniques, and the residential sample ( N = 2601) was recruited using purposive sampling.

Results

Mean weights ranged from −46.55 to 61.13. Singly considering impact, current adoption levels, or likelihood of adoption would result in a different behavior receiving priority for a campaign (eliminating irrigated areas in landscapes, installing smart irrigation controllers, and following local watering restrictions, respectively). However, when these values were considered together, installing drought-tolerant plants in the yard had the greatest overall weight.

Limitations

A possible conceptual limitation of this case study was the national scope of our research. The findings provide valuable baseline data for behavior change practitioners working across the country, and it is advisable to replicate this process at a local scale corresponding to the targeted intervention.

Recommendations for Research or Practice

The findings underscore the importance of including technical experts and target audience members early in social marketing program planning and reveal the importance of systematically approaching behavior change selection to thoroughly consider different components of potential behaviors. Behavior change practitioners working on water issues can use the weights reported here to prioritize behaviors for targeted interventions, and those working in all areas can follow the process to prioritize behaviors at the local level. There are exciting opportunities to decompose likelihood into behavioral antecedents for both research and application.