CSD is an On-Site Wastewater Treatment System Design Company devoted to High Quality and Cost Effectiveness. We strive for pin-point accuracy and down to earth service for Our Customers. We work well with local county regulators and jurisdictions to achieve your intentsions. We are known for our Honesty and Integrity throughout the industry. Environment and Public health is our concern. We will work with you to evaluate the situation and come up with an innovative process to accommodate your needs. CSD is Washington State Certified specializing in King and Pierce Counties. CSD has been performing designs since 1994 and has been in the industry since 1991. We have been incorporated since 2006. In the early years we installed septic systems. CSD has the knowledge of not only designing, but