Wastewater Treatment Plant

The Leavitt E Magrath Wastewater Treatment Plant (WWTP) is owned by the Town of Hampton and is operated by the Public Works Department. It is a grade 4 secondary treatment, activated sludge facility. Located on Hardardt’s Way, behind the closed landfill, the WWTP presently treats the domestic and industrial wastes from Hampton and Rye. It also accepts septage waste from the local area.

NH celebrates EPA's SepticSmart Week, September 18th through September 22nd

The Town of Hampton is participating in EPA's SepticSmart Week, September 18-22. The week is designed to encourage homeowners and communities to care for and maintain their septic systems. The EPA has a website dedicated to SepticSmart Week.

About six out of every 10 households in New Hampshire depend on septic systems or other types of onsite systems to treat their wastewater. These systems are critical in protecting the state's water resources. These water resources are enjoyed by everyone whether you are swimming at Hampton Beach, kayaking on our ponds and creeks, fishing in our rivers and harbor, simply taking a drink of water out of your own kitchen faucet.

Failure to maintain a septic system can lead to backups and overflows, which can result in costly repairs and can cause health and water quality problems. An improperly maintained system can even be a significant source of groundwater contamination and cause issues with your drinking water well.

During SepticSmart Week, the Hampton Public Works Department is distributing education and outreach resources to help educate residents about their septic systems. Check out GetPumpedNH for more education and a rebate form for your next tank service. The EPA provides homeowners with easy to remember maintenance tips, including:

  • Protect It and Inspect It: Homeowners should generally have their system inspected every three years by a licensed contractor. Tanks should be pumped when necessary, typically every three to five years.
  • Think at the Sink: Avoid pouring fats, grease and solids down the drain. These substances can clog a system's pipes and drainfield.
  • Don't Overload the Commode: Only put things in the drain or toilet that belong there. For example, coffee grounds, paint, dental floss, disposable diapers, and wipes, hygiene products, cigarette butts and cat litter can all clog and potentially damage septic systems.
  • Don't Strain Your Drain: Be water efficient and spread-out water use. Fix plumbing leaks and install faucet aerators and water-efficient products. Spread out laundry and dishwasher loads throughout the day — too much water at once can overload a system that hasn't been pumped recently.
  • Shield Your Field: Remind guests not to park or drive on a system's drainfield, where the vehicle's weight could damage buried pipes or disrupt underground flow.


  • DO: Dispose of non-flushable,
    non-degradable items in
    the trash can!
  • DO: Only flush human waste
    and toilet paper
  • DON'T: Flush non-degradable products
    or chemicals, such as feminine
    hygiene products, dental floss,
    diapers, cigarette butts, cat
    littler, paper towels and

Just because something says it's "flushable" doesn't mean it's safe for your septic system or sewer

Flushing items that don't belong in the sewer can cause backups and
premature septic system failure
, both of which can cause significant
environmental impact and inconvenience.

NEVER flush chemicals or medications down the toilet. These
substances can kill off the beneficial bacteria that make your septic
system work, which in turn can result in system failure.
Learn more at GetPumpedNH

Wastewater From Recreational Vehicles and Campers Must Be Disposed of Legally!

Impacts of Illicitly Dumping RV and Camper Black and Gray Wastewater

Human and Pet Health

  • People and pets can be unknowingly exposed to health hazards, such as bacteria, which
    can cause illness when black and gray wastewater tanks are improperly emptied.
  • Improper disposal can cause beaches and swimming areas to be closed due to high
    bacteria levels.

Environmental Health

  • Dumping of RV and camper wastewater contaminates ground and surface waters with
    pathogens, such as E. coli, chemicals, and nutrients including nitrogen and phosphorus.

Only Dispose of Your RV Septage at Authorized Locations!

Disposal of RV septage at other than an authorized location is not just wrong, it is Illegal and carries substantial fines! More Information