Reclaimed Water Infiltration Study
The LOTT Clean Water Alliance is conducting a multi-year study with the goal of providing local scientific data and community perspectives to help policymakers make informed decisions about future reclaimed water treatment and uses.
Addressing Community Questions
To address community questions about using reclaimed water to recharge groundwater, the LOTT Clean Water Alliance is conducting a multi-year study. Findings will help LOTT and our communities understand potential risks from infiltrating reclaimed water to groundwater and how to reduce those risks.
View Study Introductory Materials
The study effort began in 2012 with consulting assistance from HDR Engineering Inc. The effort is divided into three phases.
Your input about the study is welcome! Please share your questions, concerns, or interests regarding the study or sign up to receive updates about study progress and opportunities for public involvement by clicking here.
Design of the Study: Framework and Scope of Work
Phase 3 of the study is designed to answer these questions:
What are the risks from infiltrating reclaimed water into groundwater because of chemicals that may remain in the water from products people use every day, and what can be done to reduce those risks?
To accomplish that, the study framework focuses on four key areas: water quality characterization; treatment effectiveness evaluation; risk assessment; and cost/benefit analysis.
View videos on the design of Phase 3 work:
Community Advisory Group
A Community Advisory Group was formed to assist the LOTT Alliance Board of Directors and study team to gain an understanding of community perspectives and questions, ensure the study is designed to address community concerns, and help identify effective ways to engage the public throughout the study. This group has completed two phases of work.
View Community Advisory Group Materials:
Questions regarding the Community Advisory Group can be directed to Lisa Dennis-Perez, LOTT Public Communications Manager, at (360) 528-5719 or send an email.
Study Products and Reports
Study work will result in a variety of products, resources, and reports. Check here occasionally to view additional materials as they become available.
State of the Science Summary of the State of the Science, based on a review of existing scientific research regarding study topics.
Case Study Summary Case studies for six different projects across the country that involve infiltrating reclaimed water into groundwater.
Study Scope of Work Phase 3 Description of work associated with the implementation phase of the study.
Peer Review Panel Report, February 2014 Final report from panel's review of the study design and draft Phase 3 scope of work.
Study Team Response to Panel Responses to comments and recommendations made by Peer Review Panel regarding study design and draft scope.
Public Involvement Plan A guide that will be adjusted as the study progresses to effectively engage the public, gather input and feedback, and encourage community dialogue about the study and related issues.
Focus Group Report Summary of three citizen focus groups conducted in the fall of 2013 to learn how best to communicate about the study and the technical topics involved.
Public Opinion Phone Survey Report Summary of a phone survey conducted in early 2013 of 400 residents to gain an understanding of public awareness, knowledge, interest, and perceptions regarding water, wastewater, reclaimed water, groundwater recharge, and related issues.
Public Opinion Interviews Report Summary of structured interviews conducted in early 2013 with 53 community members to gauge awareness, interest, and opinions about study related issues.
Here is a list of additional resources (presentations, documents, studies, and reports) that may be of interest. Check here occasionally as this list will be updated over time.
Videos from 2012 Symposium on Compounds of Emerging Concern - LOTT and the Washington State Department of Health co-sponsored a science symposium about compounds of emerging concern in March 2012 that featured five internationally-renowned experts in the field of chemicals in the environment.:
Question and Answer Session with All Five Presenters Symposium speakers respond to questions from the audience about their presentations and compounds of emerging concern.
LOTT welcomes public comment and input about these issues. You are invited to share any questions, concerns, or interests you may have regarding reclaimed water, residual chemicals, groundwater recharge, the Reclaimed Water Infiltration Study, or related issues. Comments can be submitted by email by clicking here .
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