Lead Service Line Replacement Information

City of Monmouth, IL (0234998.01) 1-1 Woodard & Curran, Inc.
Lead Service Line Replacement Plan April 2024

1. INTRODUCTION
The City of Monmouth (City), located in Warren County, is submitting the first draft of its Lead Service Line
Replacement (LSLR) Plan outlining the City’s approach to replacing all known lead and galvanized service
lines within the City’s service area. Replacement of lead and galvanized service lines is necessary to improve
the health and safety of the City’s residents and is required by the Illinois Lead Service Line Replacement
and Notification Act (the Act), codified as 415 ILCS 5/17.12. This act requires the submission of a LSLR Plan
yearly on April 15 from 2024 through 2027 to the Illinois Environmental Protection Agency (IEPA). The final
LSLR Plan is due April 15, 2027. Following the final submission, the City will continue to submit an updated
plan annually for the first 10 years. After this period of time, the City will submit the report every three years
until all lead and galvanized service lines have been replaced.

Background
The City of Monmouth owns and operates a public, community water system that provides water to
approximately 9,840 people. It operates under the Water System Name and Number: Monmouth,
IL1870150. The system includes: a North and South Water Treatment Plant, distribution system piping, six
(6) groundwater wells, and three (3) elevated storage tanks.

Makeup of Customer Base
The current customer base consists of approximately 3,750 metered services which includes industrial,
commercial, and residential users. Of these users, the City has identified 55 high-risk facilities that are
detailed further in Section 2.2.1. Since 2020, records show that the City has replaced at least 18 lead service
lines.