EPA has developed the Revised Total Coliform Rule Assessment and Corrective Actions Guidance Manual for public water systems (for example, owners and operators) to assist in complying with the requirements of the Revised Total Coliform Rule.

Please check and verify requirements with your state, state requirements may vary from the federal rule requirements as presented below.

For more information, please see the Revised Total Coliform Rule and Total Coliform Rule page.

• Revised Total Coliform Rule Assessment and Corrective Actions Guidance Manual (PDF)(164 pp, 2 MB, September 2014, EPA 815-R-14-006)