Water reports · 1

Water reports by ZIP code in 1

1 ZIP codes in 1 have federal drinking water monitoring records. Each links to what those records show, and to what they do not cover.

1 is the primacy agency code, which is how EPA files a water system rather than where a postcode sits. For most systems it is the state; for systems on tribal land or under direct federal oversight it is a tribe or an EPA region.

A ZIP missing from this list reaches no water system in the federal records we hold. That is not a finding about its water. It is most often a ZIP served by a system too small to have been sampled, or one that is only PO boxes.

All states and agencies