INFLOW & INFILTRATION AND STORMWATER STUDY

BELLEVILLE, ILL The City of Belleville owns and operates its sanitary and storm sewer collection system which includes combined sewer in some portions of the system and separate sanitary and storm sewer in other portions. The objective of the I/I Study was to identify inflow and infiltration areas, estimate volume of flow from I/I, recommend available methods for correction, and estimate the cost associated with the correction methods. The study was performed in an effort to provide the City with the condition and capacity of the collection system and thus prioritize improvements to reduce treatment plant operating cost, reduce localized flooding, and potentially provide treatment capacity that could minimize future plant expansions.