Start with high-confidence water supply books, then narrow by subgenre or adjacent topics.
Water to the Angels
Les Standiford
Land of the Underground Rain
Donald E. Green
Deep Water
Jacques Leslie
Principles of Water Treatment
Kerry J. Howe, David W. Hand
Introduction to Infrastructure
Michael R. Penn, Philip J. Parker
Dynamics of Fluids in Porous Media
Jacob Bear
Where the Water Goes
David Owen
Empire of Water
David Soll
Draining New Orleans
Richard Campanella
The Fourth Phase of Water
Pollack
Water Resources Engineering
Larry W. Mays
Drinking Water
James Salzman
Hydronarratives
Matthew S. Henry
A Ditch in Time
Patricia Nelson Limerick, Jason L. Hanson
Purified
Peter Annin
Falling Films in Desalination
Henning Raach