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TO: Mayor Richard C. Irvin
FROM: Robert Leible, Superintendent of Water Production
DATE: January 23, 2023
SUBJECT:
A Resolution authorizing CDM Smith Inc., to provide professional engineering services to conduct a Corrosion Control Treatment Optimization Study for the Water Production Division in an amount not-to-exceed of $1,168,390.00.
PURPOSE:
To obtain City Council authorization to enter into an agreement for professional engineering services with CDM Smith Inc., (CDM Smith), Chicago, IL for the design, project management, and study completion services for a Corrosion Control Treatment Optimization Study (CCTOS) for the Water Production Division (WPD).
BACKGROUND:
The Safe Drinking Water Act (SDWA) is the principal federal law in the United States intended to ensure safe drinking water for the public and for the protection of public health. Lead is a drinking water contaminant of concern and has been regulated since 1991 by the Lead and Copper Rule under the SDWA. In recent years the focus of lead in drinking water has intensified due to water quality problems with lead in municipal drinking water systems.
Generally speaking, lead in drinking water is not found in treated water leaving a municipal water treatment plant, as is the case in Aurora. Water is known as the universal solvent, and lead is leached into drinking water when the water passes through piping made from lead. A specific example of lead piping is known as a service line, which carries water from the watermain to the home or business. Where present, lead service lines are the most common source of lead found in drinking water.
Regular testing of drinking water in customer homes which have a lead service line is required by the Lead and Copper Rule. Aurora has been in compliance with the Lead and Copper Rule for many years. With the increased scrutiny of lead in drinking water and the development of newer sample collection procedures, the occurrence and level of lead in d...
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