A method for improving the service life of passive filtration and infiltration devices. Contaminated water, such as stormwater runoff or wastewater, is filtered through a media comprising of a mixture of filter media and stimuli-responsive polymer particles. The polymer particles reversibly expand/contract in response to changes in certain environmental stimuli, resulting in increased macropores and breakup of sediment and crust that would otherwise reduce hydraulic flow. The method is effective in a variety of passive devices, including conventional particulate filters, infiltration systems, and high loading canister, cartridge and catch basin filter devices.