What Not To Flush and Backflow

What Not to Flush

What Not to Flush

Important: Just because it says “flushable” doesn’t mean it’s true. Many items can cause clogs, sewer backups and overflows that may damage property & the environment. The City maintains & clears City lines up to the curb. Homeowners are responsible for blockages and clogs at their own residence to the curb. 

To help prevent clogs and backflow issues at home or in City sewer lines, don’t flush anything except toilet paper and human waste. Here are some items you should never flush down a toilet or drain (dispose of these items in the trash or recycling where accepted instead):

  • Diapers, adult protective underwear, (cloth, disposable or “flushable”)
  • Sanitary napkins, tampons & applicators, condoms & non-organic material
  • Tissues, napkins, paper towels, baby wipes, disinfectant wipes, moist wipes or scrub pads
  • Clothing, wash cloths, towels or other clothing
  • Dental floss, toothpaste, medicine or syringes
  • Egg shells, nutshells, & coffee grounds
  • Fats, oils, and greases 
  • Food items containing seeds & peelings
  • Plastic of any kind
  • Cans, bottles, bricks, glass, wood

Rags_in_ManholeWhat is Backflow?

Backflow is the reversal of flow of a non-potable water supply into the piping of a public potable water supply which occurs when the conditions inside of the public water system change, causing the water to flow in the opposite direction. Backflow can easily cause potable water to become contaminated and polluted, making it unsafe for human consumption.

To Help Prevent Backflow, keep your pipes clean.

  • Submerge hoses in buckets, pools, tanks, sinks or ponds
  • Use spray attachments without backflow prevention device
  • Connect waste pipes from water softeners or other treatment systems to the sewer or submerged drain pipes
  • Use a hose to unplug blocked toilets or sewers


  • Keep the ends of hoses clear of all possible contaminants
  • Install hose bib type vacuum breakers
  • Install approved backflow prevention assembly on underground lawn irrigation system (plumbing permit required).
  • Educate others on the importance of Backflow Prevention

Need to test your pipes for Backflow?

Provided here for your reference is a List of Certified Testers (PDF)

Backflow Prevention Test & Maintenance Report (PDF)