Hydrohistorian
Water purification works, Cincinnati, Ohio
Library of Congress · 1939 · Public Works Administration
Library of Congress, Prints & Photographs Division, LC-USZ6-2340 No known restrictions on publication. Archive record ↗ · Rights
Source Archival record · verify at Library of Congress ↗
The same city's purification works from the air, forty years on from the plate beside it. Treatment had become a landscape by then -- acres of rectangles, arranged for flow.
Shows: The scale treatment reached once it was routine, and what it looks like as a plan.
What this does not let you conclude: What is in the water. A works this size guarantees process, not outcome; the outcome is what the sampling record beside it reports.
Placed on
- Topic quality · plate
The archive’s record page
The archive’s record did not answer our check on 2026-10-12 (refused automated check, HTTP 403). Our copy above is unaffected; the credit stands. A person will look.