Here are some quick facts about the ARA Pfäffikon, which is my residential WWTP.
Name: ARA Pfäffikon
Size: It sustains about 17 000 People
Serves these villages: Pfäffikon, Bäretswil, Hittnau, Fehraltolf
Location: Schanzweg 2, 8330 Pfäffikon (See map below)
Fun Fact: The ARA is located opposite of the "Schanz" which is our "Wertstoff-Sammelstelle"
Source: züriost
Source: map.geo.admin