Lennon, Smith, Souleret Engineering, Inc. (LSSE), founded in 1985, is a 118-person civil engineering and surveying firm with offices in Coraopolis (Allegheny County), Greensburg (Westmoreland County), Albion (Erie County), Center (Beaver County), Pennsylvania and Dublin (Franklin County), Ohio. LSSE serves the municipal government, commercial, industrial, institutional, residential and utilities markets; and has a proven reputation for meeting client expectations.  

LSSE specializes in providing water, wastewater, and stormwater engineering services. LSSE provides surveying, permitting, facilities planning, civil design, construction phase services, GIS/mapping and asset management, and grants/funding procurement and administration services for wastewater collection, conveyance and treatment; water supply, treatment, storage, and distribution; stormwater management, low impact development, and flood protection; MS4 programs; infiltration/inflow (I/I) and source flow reduction; green infrastructure; sanitary sewer evaluation studies (SSES); Corrective Action Plans (CAP); flow monitoring; hydrologic and hydraulic modeling; and operations and maintenance programs.

LSSE’s water/wastewater facilities projects range from small maintenance programs to capital improvement projects over $65 million in construction value.