Water is rapidly becoming our most precious resource and California Filtration Specialists LLC. was founded to assist builders municipalities and individuals in protecting this resource.

California Filtration Specialists was founded by Whitson Contracting & Management Inc. in 2015 when its staff discovered the need for cost-effective space-saving ways to meet the ever-changing requirements in the stormwater industry. Our products provide solutions to project requirements and design problems related to filtration infiltration biofiltration and rain water harvesting.