Pure Water Overview Water that contains no detergents or other additives (pure water) can be a very effective cleaning agent. It can remove aqueous-based (water-based) machining coolants, chlorides, and other ionic contaminants and bulk soils such as dirt, grit, and grease. Pure water is most frequently used in steam systems and in high- and low-pressure spray systems. Some water supplies need to be demineralized before use to prevent water spots or other residues. Water used in precision cleaning applications may need to be deionized and highly filtered. The water can often be recycled and reused, especially water from rinse steps. The waste stream may need to be treated, depending on the type of soil that is mixed with the water. State Information | Glossary | Conversion Checklist | Comments Home | Process Advisor | Alternatives | Links | Search All SAGE material, Copyright© 1992, Research Triangle Institute Last Update: 18 March 1995 sage@rti.org http://clean.rti.org/alt.cfm?id=wt&cat=ov