Statement of Intent – Per the Michigan Department of Environment, Great Lakes and Energy (EGLE), homes built prior to 1989 are considered at risk for containing lead water service lines (LSLs).  Although the City of Novi believes no LSLs exist in the City, we are required to complete a Distribution System Material Inventory (DSMI).  This inventory involves randomly selecting a subset of the pre-1989 homes to physically inspect the pipe materials.  The inspection process includes two steps – 1) observing the pipe material inside the home at the water meter, and 2) digging up the area around the water shutoff valve (typically in the front yard) to inspect the pipe material on either side of the valve.  The City will be inspecting approximately 370 homes in this manner.

DSMI – The purpose of a DSMI is to characterize, record, and maintain a comprehensive inventory of distribution system materials, including service line materials on both public and private property.

Inspections - OHM Advisors, the City’s engineering consultant, will be assisting with the inspections.  OHM personnel have been authorized to contact residents, and to perform the internal home inspection at the water meter.  All OHM personnel shall have clothing with their logo.  The Water and Sewer Division can be contacted with any questions or concerns about the inspections. 

Hydro Excavating Sample Location

Hydro Excavating

Sample Location


PDF Icon Example of letter sent to selected homes

PDF Icon Public Notification of Lead Service Line Investigation

Materials Available Online

  • Click on link "Lead and Copper"
    • General Information
      • Reduce exposure
      • Particulate lead
      • Construction activities
    • ​Regulatory links
    • School information
    • Council information

  • Act 399
  • Administrative Rules
  • Strike bold copy of the Rule changes
  • Regulatory links

PDF Icon Lead Service Line Requirements Summary

PDF Icon Distribution System Materials Inventory Overview

PDF Icon Printer Friendly Materials Available Online

If you have any questions, please contact the Water and Sewer Division at 248-735-5661