Zoeller pumps have become synonymous with quality in the plumbing industry. Zoeller sump pumps or dewatering pumps and effluent or septic tank system pumps are corrosion resistant and watertight. Zoeller pumps are 100% factory tested and have become a benchmark in the plumbing industry for the past 25 years. Zoeller Pump Company continues to offer high quality products, services and technologies designed to provide value, while efficiently serving society and protecting the environment. Zoeller Pump Company, Often Imitated. Never Duplicated