Start with high-confidence water supply books, then narrow by subgenre or adjacent topics.
Water to the Angels
Les Standiford
Cadillac Desert
Marc Reisner
Land of the Underground Rain
Donald E. Green
Principles of Water Treatment
Kerry J. Howe, David W. Hand
Dynamics of Fluids in Porous Media
Jacob Bear
Where the Water Goes
David Owen
Empire of Water
David Soll
Beyond <i>chinatown</i>
Steven P. Erie, Harold Brackman
Water Resources Engineering
Larry W. Mays
Drinking Water
James Salzman
A Ditch in Time
Patricia Nelson Limerick, Jason L. Hanson
Purified
Peter Annin
The Middle East Water Question
Tony Allan
Falling Films in Desalination
Henning Raach