Arden Consulting Engineers Ltd. is a consulting engineering firm specializing in the design of decentralized on-site wastewater treatment systems from initial site reconnaissance, to system design, to construction review Arden Consulting Engineers Ltd. staff prides themselves on their ability to provide affordable and practical solutions to onsite wastewater treatment problems. We are up to date on the latest legislation and policy governing sewage disposal. Staff regularly attend national conferences in the on-site wastewater treatment industry to stay current on new and innovative technologies. more... See more text