The City of Keene's wastewater system collects and transports wastewater from homes and businesses to the City's wastewater treatment system. Proper use of the sewer system helps prevent backups, blockages, and unnecessary damage to sewer infrastructure.

What Can I Flush?

Only toilet paper and human waste should be flushed down the toilet.

Do not flush:
  • Baby wipes or cleaning wipes, even if labeled "flushable"
  • Paper towels
  • Facial tissues
  • Feminine hygiene products
  • Diapers
  • Cotton swabs
  • Dental floss
  • Hair
  • Medication
  • Grease, fats, or oils
  • Cat litter
  • Trash or other household items
When in doubt, throw it in the trash instead of flushing it.

Fats, Oils and Grease

Fats, oils, and grease (FOG) should never be poured down sinks, toilets, or drains. FOG can build up inside sewer pipes and cause blockages, backups, and costly repairs.

Instead:
  1. Allow grease and cooking oil to cool.
  2. Pour or scrape it into a container.
  3. Seal the container and place it in the trash.

Wipe greasy pots, pans, and dishes with a paper towel before washing them.

Report a Sewer Problem

Residents can report sewer-related concerns through the City's Citizen Portal.

You can report issues such as:
  • Sewer backups
  • Overflowing manholes
  • Sewer odors
  • Drainage or wastewater concerns
  • Other sewer system issues

When submitting a report, provide the location and a description of the problem. Photos can be helpful when available.

Report a Sewer Issue

For after-hour emergencies, please call:  817-240-5082.

Inflow and Infiltration

Inflow and infiltration (I&I) occurs when rainwater or groundwater enters the sanitary sewer system through places where it should not.

Inflow is water that enters the sewer system directly, such as through improperly connected downspouts, drains, or other openings.

Infiltration occurs when groundwater enters the sewer system through cracks, damaged pipes, defective joints, or other openings in the sewer infrastructure.

Excess water in the sewer system can increase the amount of wastewater that must be transported and treated and can contribute to sewer overflows and backups.

How You Can Help
Property owners can help reduce inflow and infiltration by:
  • Keeping rain gutters and downspouts directed away from sanitary sewer connections.
  • Making sure outdoor drains are not connected to the sanitary sewer.
  • Maintaining private sewer lines and connections.
  • Repairing damaged or leaking sewer pipes on private property.

The City works to identify and address sources of inflow and infiltration throughout the wastewater system.