Boil order issued for Le Grand
November 23, 2010

Residents of Le Grand, Iowa, have been ordered to boil their water while their water system goes under repairs. The Iowa DNR thinks that the system could lose pressure as a result of the repairs, which would disrupt the system's disinfection quality. What many people may not realize about distribution systems is that low-pressure events can cause leaks, cracks, and loose joints in the pipes to suck contaminants into the water from the surrounding soils. The EPA has addressed this source of contamination as an area for further research and hazard mitigation. One of the ways the hazard can be addressed is through the proper application of air-release valves and vacuum breakers.

November 2010
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last revised November 2010