Summary of Project The Pittsburgh Water and Sewer Authority (PWSA) operates and maintains a collection system which consists of approximately 1,234 miles of sewer, 28,500 manholes and over 24,500 inlets. Over 73 % of the PWSA system is combined. Prior to 2003, the
data management system consisted of excel spreadsheets and poorly organized VHS tapes. Bentley Microstation based index drawings were the primary tool through which sewer size and location was managed.
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