ANSI/NSF 240-2011
Drainfield Trench Product Sizing for Gravity Dispersal Onsite Wastewater Treatment and Dispersal Systems

Standard No.

ANSI/NSF 240-2011

Release Date

2011

Published By

American National Standards Institute （ANSI)

Latest

ANSI/NSF 240-2011

Scope

Issue 1 - Revision 5: The purpose of this ballot is to create an American National Standard that provides laboratory and field evaluation methods for comparing gravity dispersal drainfield products based on hydraulic performance used in place of conventional coarse aggregate within onsite wastewater treatment and dispersal systems.

ANSI/NSF 240-2011 history

• 2011 ANSI/NSF 240-2011 Drainfield Trench Product Sizing for Gravity Dispersal Onsite Wastewater Treatment and Dispersal Systems