Frequently Asked Questions (FAQ)

What is the PW Customer-Invoice Payment Status Inquiry?

The PW Customer-Invoice Payment Status Inquiry (IPSI) is a web-based application that gives customers the ability to view the status of their Public Works Invoices online.

The status of invoices that remained unpaid at the end of Fiscal Year 2007-08 (6/30/2008) or invoices generated in or after Fiscal Year 2008-09 in the electronic Countywide Accounting and Purchasing System (eCAPS) are available in the system. The status for invoices generated from other systems such as the Hazardous Materials System (HMS) and the Waterworks Customer Information System (CIS) are not available in IPSI.

Customers have the ability to check on the posting of their payments made against Public Works invoices and to view facsimiles of most Public Works invoices dated on or after August 25, 2011. A valid Customer Number and Address ID are required to use this application. The web application can be accessed from the Public Works home page at

IPSI Financial budget auditing FIS Fiscal accounting cashiering payables receivables audits FAS invoice