Welcome to Sidener Environmental Services, Inc, a water and wastewater products distributor and service company based in St. Louis, MO.

Established in 1967, we specialize in water and wastewater maintenance, equipment sales and services to provide municipalities and the global water treatment market the highest quality water.

As a Walchem, Evoqua, Sherwood and Integrity Municipal Systems authorized service provider and parts distributor, we can properly diagnose faulty or failing equipment with the latest technology.


Sidener Environmental is proud to partner with Walchem An Iwaki America Company, a leading manufacturer of on-line analytical instruments and electronic metering pumps. Walchem provides innovative solutions by integrating their instruments, sensors, fluid handling and extensive remote data communications technologies. As a Walchem reseller, Sidener Envirnmental Services is the preferred dealer in Southern Illinois, Missouri, Kansas and Nebraska.


Sidener Environmental is a Manufacturer’s Representative/Stocking Distributor for Wallace and Tiernan/Evoqua Water Technologies, a leader in water and wastewater treatment products, systems and services for industrial and municipal customers that offer a wide range of proven product brands and advanced water and wastewater treatment technologies, mobile and emergency water supply solutions and service contract options. As an Evoqua reseller, Sidener Environmental Services proudly serves Illinois, Missouri, Kansas, Oklahoma, and Western Kentucky markets.


Sherwood Valve produces valves for all segments of the compressed gas industry including industrial, chlorine, medical, welding, specialty, semiconductor, life support, LPG and refrigeration. Sidener Environmental Services is a preferred parts distributor and authorized service center, supporting and servicing these valves throughout the United States.


Integrity Municipal Systems is an engineering company devoted to designing and supplying innovative, pre-assembled process solutions for the water and wastewater industry. Products include fluoride and ammonia feed systems, lime slakers, packaged odor control systems, and emergency chlorine scrubbers. Sidener Environmental Services maintains, services and stocks these products for clientele throughout the United States.

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