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Can a system receive 40/30 certification if individual samples exceed 40/30 levels, but annual averages for TTHM and HAA5 are below these levels?

No, a system cannot receive 40/30 certification if any samples exceed 40/30, even if the system’s averages are below 40/30.

For additional guidance on the Stage 2 Disinfectants and Disinfection Byproducts rule please visit http://water.epa.gov/lawsregs/rulesregs/sdwa/stage2/regulations.cfm.

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Topic Information
  • Topic #: 23002-14490
  • Date Created: 3/10/2006
  • Last Modified Since: 3/19/2012
  • Viewed: 5868

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