Wiegner Ponds is a contractor based in Santa Rosa, CA, specializing in the construction and maintenance of various types of ponds. Their services include building backyard koi ponds, pondless waterfalls, and larger agricultural or farm ponds used for irrigation and water storage. They serve multiple counties including Sonoma, Solano, Contra Costa, and El Dorado. One of their notable capabilities is the installation of biological filtration systems with variable speed motors, enhancing pond water quality and ecosystem health.

Clear Pond Solutions is a pond and lake management company based in Santa Rosa, CA. They offer services including pond liner installation and repair, aquatic weed and algae control, lake dredging, and organic sludge treatment. The company specializes in restoring and maintaining ponds and lakes using environmentally friendly methods. Established in 2014, Clear Pond Solutions is fully licensed and insured, providing professional and experienced service to the local community.