WASTEWATER ENGINEERING
Innovative wastewater engineering solutions for performance, sustainability and regulatory compliance.
Innovative Wastewater Solutions
Carroll Engineering provides a broad spectrum of wastewater engineering services to townships, municipal authorities, and private utility owners. The scope of our services ranges from small sanitary sewer extensions serving a single neighborhood to regional pump stations with capacities up to 60 million gallons per day (MGD). Our comprehensive approach to system planning and expansion provides a cost-effective means for system owners to provide service to unserved portions of their service area while integrating new development construction. Innovative designs such as biological nutrient removal wastewater treatment processes help reduce capital and operating costs for new and retrofitted treatment plants.
The firm offers comprehensive engineering services for system expansion and major capital improvements covering conceptual planning and project costing, preparation of drawings and contract documents, bidding services, and construction administration and observation.
Our services extend beyond traditional engineering to include system operation guidance, infrastructure asset management, budgeting and rates,rules and regulations, municipal finance, and inter-municipal agreements.
Wastewater Engineering Services
- Representation for Municipalities and Authorities
- Wastewater Collection, Conveyance and Treatment
- System Condition Evaluation
- Inflow and Infiltration (I/I) Investigations
- System Rehabilitation
- On-Lot Disposal Systems
- Act 537 Plans
- Wasteload Management (Chapter 94) Reports
- State and Local Permitting
- Sewage Management Programs
- Asset Management and Mapping
Featured Wastewater Projects
Whitemarsh Water Pollution Control Center
Whitemarsh Township, Montgomery County, PA
Multiple projects have been completed including upgrading the treatment plant’s hydraulic capacity, improving the trickling filter performance, improving plant controls, provide new offices for the Authority, and adding new sludge dewatering facilities.
Sanitary Sewer Replacement
Willistown Township, Chester County, PA
Willistown Township owns a sanitary sewer system serving the northern third of the Township, much of it built with vitrified clay or asbestos-cement pipe. After years of increasing inflow and infiltration into the system, the Township launched an investigation beginning with televising the sewers; Carroll Engineering then reviewed the footage and reports to pinpoint areas needing repair, including Long Lane, McKinley Avenue, Marlin Drive, and Eisenhower Drive, where asbestos-cement pipe was deteriorating due to hydrogen sulfide gas from upstream pump stations. When a section of sewer between Long Lane and McKinley Avenue collapsed, Carroll Engineering moved quickly to finalize construction drawings and specifications, prepare new easements, and secure emergency permits so repairs could proceed on an accelerated timeline. While that emergency work was underway, the firm also completed plans and specifications for two additional projects replacing sewers in Long Lane and in Marlin Drive and Eisenhower Drive; construction later wrapped up, replacing 1,200 feet of 8″ and 10″ sewer lines and seven manholes, with the 10″ lines upgraded to 12″ to boost carrying capacity.