Frequent Questions

Will systems submit sampling schedules to EPA or to the state?

Large systems will submit sampling schedules electronically to EPA via the LT2ESWTR data collection system.  Small systems, if the state has primacy, will submit sampling schedules to the state.  If the state does not have primacy when small systems are submitting sampling schedules, small systems will submit to EPA, possibly using the LT2ESWTR data collection system.

For additional guidance on the Long Term 2 Enhanced Surface Water Treatment Rule please visit

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