Frequently Asked Questions


What Should I Avoid Flushing?


Most common causes of problems:

  • cooking oil (grease)

  • wipes (these include personal wipes, baby wipes, swiffer wipes, etc, etc  including those marked flushables)

Other cuplrits

  • glass, metal, plastic

  • diapers, sanitary napkins, tampons, condoms

  • latex paint (usually introduced by washing paint brushes)

  • powdered soap of any kind for either laundry or dishwasher

  • soap pods of any kind for either laundry or dishwasher

  • socks, rags or clothes

  • explosives or flammable material

  • strong chemicals or gasoline

  • sand from washing clams, mussels, shells etc in the sink

Who services pumps when there is a failure?


Out of warranty pumps are now serviced by Weston  & Sampson. 

Call 978-328-0235 or email


For in warranty service of E-One pumps contact FR Mahoney.  It is reported that they do not perform any work on weekends and holidays, but this has not been verified.  FR Mahoney charges $150 for each visit to your home on top of their hourly rate and any parts needed.


E-One Grinder Pump Service

FR Mahoney

273 Weymouth ST

Rockland, MA 02370



For in warranty service for pumps that are not E-One, call the installer contractor, distributor or manufacturer directly.



What if the power goes out?


Per E-One:

Limit your water usage as much as possible. The tank does have extra storage capacity and should be adequate because you are not using the dishwasher, washing machine, etc. When the power comes on again, the alarm may go off for a short time – this is normal because the water could be above the pump’s alarm level and the pump needs a few minutes to pump down the tank to a normal level. If the alarm does not turn off, call for service.

The best way to handle power outages is using an alarm panel that is equipped with a Remote Sentry Module and a generator receptacle. The Remote Sentry is a remote alarm with a buzzer & LED that indicates a high water alarm even if the power is out, when it is connected to the Remote Sentry Contacts in the panel. So, the home owner can use the water until the Remote Sentry indicates that the tank is full, then they plug a 6500W generator into the receptacle on the panel, the pump comes on, pumps down and they can continue to use water.


Do I need to do anything special if I will be away for several days?

When asked this question, we didn’t find anything on the E-One website, but the town of Groton, Ct which owns and maintains most of the grinder pumps in town writes this:


“If you plan on being away for several days, replace the wastewater in the tank with clean water to help minimize odors.  First run water from an inside faucet long enough for the grinder pump to start working.  After the pump starts, turn the inside faucet off.  The pump will run until the tank is empty and shut off automatically.  This process will cleanse the pump and leave it filled with a minimum of clean water.  Always leave the power to the pump on.  This allows the heating element inside the pump to operate which helps eliminate condensation and freezing.“

What are you asking from the town for "Fairness" regarding our sewer fees?   

One issue is that homeowners serviced by a gravity system have zero cost after installation beyond their sewer fee.  Homeowners with grinder pumps pay their sewer fee, but also have the additional burden of replacement and maintenance costs. 


Another issue is that these same homeowners with grinder pimps endure hardships during failures that not should be experienced by persons in a modern society. 



 What is the response time experienced by home owners to have their system pumped during our frequent long duration power failures?


We don't have exact data on this and the information is all anecdotal.  One homeowner said as short as 2 hours, others said a day, and one homeowner said the truck never came.   Having to cover 500 homes with limited toilet facilities could stretch manpower in these situations.


What will the Sewer Dept do to help me in an emergency?


The town has a truck with a generator that can come and pump your tank during power outages, but given the restrictions it is unlikely that anyone can avail themselves of this service.  Availibility is only during normal business hours, Mon-Fri and only if soneone is available.