The City of Langford has adopted certain preferred grinder pump packages as the standard grinder pump unit for low pressure systems based on the outstanding performance, long term warranty and excellent repair records.
If your property is serviced with sanitary sewer by a low pressure sewer (LPS) system, one of the preferred grinder pumps has most likely been utilized in the design of this LPS system.
While it is not mandatory to use the preferred models, the LPS system you are connecting to is a pressurized system which has been engineered with these models in mind. Among other features such as a built-in anti-siphon valve, the preferred pumps are designed to work together should several of the individual pumps come on to the system at one time. Alternate pumps may not have this capability.
While an alternate pump may be able to pump against the static head of the system, it may not be suitable under certain dynamic conditions. For this reason, we require that you retain the services of a Professional Engineer (registered in the Province of British Columbia) to review any alternate pump selections and provide us with written confirmation that the chosen alternate pump will operate satisfactorily under both static and dynamic conditions. Alternate pump installations must also be approved by the City of Langford.
Despite the fact that this information may be required, WSES cannot assure satisfactory operation of an alternate pump installation while operating on a LPS system. Furthermore, WSES cannot be held responsible for any damages that may arise from installation of any pump other than the preferred model the system may have been designed for.