Safely Coating Southern California Water Infrastructure

Wednesday, February 05, 2014

Water is an incredibly precious resource in Southern California. We know that providing safe drinking water to more than twenty million people in a region with little precipitation is no small task. One of the many important factors in water quality is the coatings used in infrastructure, whether reservoirs, tanks, pipelines, valves or pumps. But if it’s coming into contact with potable water, not just any paint will do. Most paints and coatings either don’t have sufficient water proofing qualities or they contain toxic chemicals that would leach into the water, making it unsafe for drinking. So, what coating can you use for potable water?

The key here is epoxy. Epoxy coatings are essential for new or maintained potable water tanks, pipes, etc. Epoxy coatings meeting NSF/ANSI Standard 61 for drinking water are officially recognized as being non-toxic and safe. While uncured, epoxy is actually fairly toxic and is known to cause severe irritation to users; however, the beauty of epoxy is that it cures into an extremely hard, resistant material that maintains integrity even against very harsh chemicals, so that virtually none of it ever erodes into the water.

Epoxy coatings can be applied successfully to many kinds of surfaces, including the steel and concrete found in potable water tanks, pipelines, and ancillary equipment. Proper surface preparation, including blasting any prior coatings, is still necessary, especially if there is any existing lead-based paint. Once applied, epoxy can take anywhere from a few minutes to several days to cure, depending on the exact material and method the painting contractor uses. But the resulting water proofing shield is both safe and durable.

For further questions on coatings suitable for potable water, or to find out more about maintaining Southern California water infrastructure, contact Cor-Ray Painting Co. at (562) 906-9770. Cor-Ray Painting is an experienced industrial painting contractor serving Southern California, including Santa Fe Springs, Norwalk, Downey, Pico Rivera, La Mirada, Whittier, and well beyond. Feel free to take a look at some of their recent projects like the the Eastgate Reservoir and Tule Flume.

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