There are two types of microorganisms at work in an activated sludge sewage treatment plant. The first type work to clean the water, while the second type stabilize the heavier materials in the sewage and produce energy.

Whoever first named the food grinder in our kitchen sinks a "garbage disposal" definitely did not work at a treatment plant! Eggshells, coffee grounds, chicken and fish bones and other non-biodegradable material put down garbage disposals causes problems for our plant.  First, we have to try and physically remove as much as possible from the wastewater stream before it can be treated. This wet and…

Baby wipes, tampons, kitty litter, facial towelettes – even a toilet brush – are now being marketed as "flushable" or “biodegradeable.” Despite this marketing trick, they do not break down in the sewer system. For example, while toilet paper breaks down immediately, independent tests show that wipes change very little even after an hour of continuous flushing action. After testing the…

Birth control, antidepressants, anticoagulants, ibuprofen, lotions, sunscreens, antibacterials…. all these and more are showing up in our water supply.

Carmel Area Wastewater District values collaboration with the customers we serve.  The most impactful way is for everyone to make a habit of only flushing bodily waste and toilet paper down our toilets.  Using a toilet like a trash is the main cause of backups and clogs in your home. It also causes trouble in our sewer lines and our treatment system. More importantly it can be extremely dangerous…