Shawn F said:
In California, you are in violation of state law to dump ANYWHERE but in a treated sewer system. That means all curbs that drain to storm drain or ocean are also out. When you say "Street Sewer", are you actually talking popping street manhole covers for actual sewage lines? When referrring to curb drains, "Street Sewer" is a misnomer. I have yet to see a curb that goes to a waste-water treatment plant.
The "street curb openings" do NOT go to any sanitary sewer pipes, as Shawn pointed out. They are there to collect and disburse rain water, snow melt (depending on climate), into man made creeks (streams - ditches), which allows this water runoff a controlled exit from our cities, where eventually this runoff ends up in our natural streams, rivers, lakes, and oceans. They are referred to as "storm sewer drains", not to be confused with the sanitary sewer drains that actually go to the local waste water treatment plant.
We use an APO (30 GPM rated). It uses a standard garden hose and has a very subtle discharge (not that that is necessary). Here, we are permitted to discharge that waste water onto the ground, providing it is far enough away from any driveways, sidewalks, or parking lots (can't go into the fish population), and providing the discharge hose is NOT over a septic leach field.
In the almost 10 years of using an APO, no customer has ever said anything to me about using the APO.
Our regs also say that waste water also can't be on the same ground area all the time, but since we are always cleaning at different locations all day long, that is NEVER a problem.
Our APO filters out the lint, fuzz, and crud that are picked up when HWE cleaning so all we are discharging is dirty waste water.
It's amazing how much time is saved when cleaning and using a reliable APO, not to mention we don't haul around hundreds of pounds of dirty water all day long.