E/One offers free sewer system design software on its web site. Visit the Design Center, fill out the form, and you will receive a link to download the software. When you click get the email, click the provided link and installation will begin. Design Assistant 8 is exclusively for designing a system with E/One grinder pumps.
(If you don't receive your link within a few minutes of filling out the form, check your spam filter or junk folder. Send an email to firstname.lastname@example.org if you experience problems.)