Groundwater is contaminated by leaks of pollutants such as gasoline and MTBE from leaking underground storage tanks, and injection of hazardous waste into deep wells - which is being phased out. The effectiveness of any drinking water treatment device is measured by the performance of its filter. A close review of NSF certification listings shows that solid carbon block filters are the most effective for reducing a wide range of contaminants including those that may be found in groundwater. In the early 1970s, solid carbon block filter technology was developed for the purpose of treating contaminants for health reasons as well as aesthetically improving water quality. The technology combines mechanical filtration, chemical reaction and physical adsorption into a single device to reduce a broad spectrum of harmful contaminants.
Activated carbon is the primary raw material used in solid carbon block filters.
Many carbons are selected with a high surface area and high retentivity characteristics. Years of research, development and manufacturing experience give compacted carbon block filters distinctive performance advantages over other treatment alternatives. Technological advantages As evidenced by the NSF certification of solid carbon block filters, we have been successful in developing the technology to produce filters that provide greater chemical adsorption and mechanical filtration. Materials are formed into a carbon block, which is densely compacted. With a solid carbon block, the water contact time is longer and provides for greater adsorption of many different chemicals, pesticides, herbicides and certain heavy metals.