CLEAR WATER AT OUTLET OF SEWAGE TREATMENT PLANT IS CLEANER THAN THE WATER OF THE STREAM IT WILL BE DUMPED INTO - NARA - 543799
Summary
Public domain image - Environmental protection federal program, the 1970s, color photographs, no copyright restrictions - Picryl description
Tags
Date
1972 - 1977
Source
National Archives and Records Administration
Copyright info
public domain