Frequent Questions

Are non-transient, non-community water systems (NTNCWSs) (e.g., hospitals) required to monitor for lead and copper?

All community water systems (CWSs) and NTNCWSs must collect lead and copper tap samples.  The frequency of the monitoring and number of samples to be collected and analyzed is based primarily on the number of people served and tap water monitoring results.  For an outline of monitoring requirements (e.g., number of samples) consult the Lead and Copper Monitoring and Reporting Guidance for Public Water Systems (EPA816-R-02-009, February 2002) .  This document as well as additional regulatory guidance is available at

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