Clean Watersheds Needs Survey

The U. S. Environmental Protection Agency (EPA), in partnership with the States, conducts the Clean Watersheds Needs Survey (CWNS) to identify and document the cost of capital needs required to meet the water quality and water-related public health goals of the Clean Water Act. The CWNS is required under section 205(a) of the Clean Water Act and section 516(b) of the Water Quality Act of 1987, which amended the Clean Water Act.

Every four years, the States and EPA collect information about publicly owned wastewater collection and treatment facilities; combined sewer overflow (CSO) control facilities; storm water management activities; nonpoint source (NPS) pollution control projects; and decentralized wastewater treatment facilities. The information collected about these facilities and projects includes estimated needs, costs and technical information; location and contact information; facility population served, flow, and effluent information.

CWNS 2012 Overview

CWNS 2012 Overview (power point presentation)
CWNews&Notes 27 CWNS Edition

2012 CWNS Schedule and Milestones

March 2012 – MDEQ kicks off the data collection phase by sending facility fact sheets and community needs forms to all communities in the state requesting corrections and documentation of new needs.

Sept. 30, 2012 – Deadline for communities to submit needs documentation to MDEQ for entry into the CWNS database.

Oct. 26, 2012 – Last day to enter data.

Nov. 2012

Dec. 2012 – Data review and reconciliation.

Late 2013 – EPA delivers CWNS 2012 Report to Congress


Small Community Survey Form (population < 10,000)
Large Community Survey Form (population > 10,000)
Sanitary Survey Form
CWNS Fact Sheet – Municipal
CWNS Fact Sheet – Consulting Engineers


For more information contact:

Tony Caldwell, P.E., Chief
Construction Branch
Office of Pollution Control
P O Box 2261
Jackson MS 39225-2261
Telephone # (601) 961-5618
Email Address: