Sewers and Pump Stations

We have extensive experience in gravity sewers, low pressure sewers, force mains, and pump stations (submersible, wet pit/dry pit, axial flow, and suction lift). Over the past 15 years, we have designed approximately 100 miles of sewers and more than 45 pump stations and 900 grinder pumps.


We design treatment plant upgrades to provide better energy efficiency, nutrient removal, and expand capacity that are customized to our clients’ specific monitoring and control requirements. Our team is proficient in the major treatment plant modeling/software programs and has in-depth experience in all phases of treatment plant upgrades, factory/field acceptance testing of instrumentation and control/SCADA systems, startup, and commissioning of pump stations and treatment processes. When appropriate we are also staunch advocates of decentralized wastewater solutions.

Our approach to infiltration/inflow (I/I) studies is to create neighborhood-size sewer basins and rank them based on I/I concentrations. Identifying I/I where there is a high number of sources per linear foot of pipe results in a significantly better return on investment and stands in contrast to the original U.S. EPA recommended approach still used by many competitors, which can result in misallocation of funds and limited success meeting reduction goals.

We use chemical dilution isolation flow measurement to locate/quantify infiltration on specific reaches of a gravity sewer system. This method measures wastewater flows on a manhole to manhole basis and can yield results with less than 5% error. With these results, we can prioritize rehabilitation of pipe segments and quantify either the infiltration or inflow components present in the system.

As part of our overall pump station expertise, we also provide substantial expertise with the design and rehabilitation of stormwater and flood pumping stations. We know how to balance storage and pump capacity to control both capital and long-term O&M costs. We are also thoroughly experienced with developing facility designs and demonstrating compliance with FEMA regulations for interior drainage behind flood controls. We develop high quality, effective designs that minimize the construction costs.

  • Condition Assessment and Troubleshooting
  • Construction Administration
  • Design
  • Directional Drilling
  • Equipment Testing
  • Funding Assistance
  • Gravity and Low Pressure Sewer Design
  • Hydraulic/Capacity Evaluation
  • Infiltration/Inflow (I/I) Studies
  • Electrical/HVAC
  • Maintaining Service during Construction
  • Permitting
  • Pump Station Evaluations and Upgrades
  • Rehabilitation/Repairs
  • Startup and Commissioning
  • Structural Evaluation
  • SCADA/Instrumentation

Contact Us

  • Call us toll free at 800-286-2469
    146 Hartford Road, Manchester, CT 06040