Centralized Sewage Treatment

Adds

 * +60 Happiness
 * +4 Sewage Treatment

Recipe

 * Aluminum 12
 * Basic Circuitry 12
 * Copper 14
 * Oil 8
 * Rubber 22
 * Steel 48

Requires

 * Workshop: Technology 6
 * Power 10

Limit

 * 1 per Settlement