About us
Environmental construction since 1992
AS Terrat is an Estonian-owned contractor specialising in environmental construction. The company began operating on 1 January 1992 and was formed out of the former land improvement department of Tallinn EPT. Long-standing experience in building and renovating Tallinn’s water management systems outside the city limits (canals, reservoirs and hydraulic structures), together with a team made up largely of specialists with higher education, laid the foundations for the new organisation.
AS Terrat has established and implemented an integrated quality, environmental and occupational health and safety management system that meets the requirements of the ISO 9001, ISO 14001 and ISO 45001 standards and has received the necessary recognition and approval from the certification bodies Det Norske Veritas and Bureau Veritas Certification.
Continuously maintained and improved, the management system ensures the high quality of the construction work carried out by AS TERRAT and underpins our competitiveness and reliability.
We have carried out construction projects throughout Estonia, as well as in Latvia and Finland. AS Terrat employs 37 people.
Our areas of expertise
Design and construction of water and sewer pipelines
- water supply pipelines with hydrants, valve assemblies and water meter chambers
- gravity sewers for domestic wastewater, septic tanks
- pressure sewer pipelines, wastewater and booster pumping stations, stilling chambers
- stormwater sewer pipelines, grease traps and oil separators, gullies
- drainage pipelines
- culverts
Trenchless renovation of water and sewer pipelines
- Inpipe (pipeline renovation using a liner)
- Flexoren (pulling a new pipe into the old one)
- sliplining (pulling a new pipe into the old one)
- pipe bursting (installing a new pipe in place of the old one after the old pipe has been burst and expanded)
- MaxiLine (short-pipe lining)
- Grundoram (driving a metal casing into the ground by ramming)
- directional drilling (installing pipelines by drilling)
Hydraulic structures
- sewage pumping stations
- boreholes
- wastewater treatment plants
- water reservoirs
- water treatment plants
Environmental facilities
- fish passes
- maintenance of water bodies
- park construction
Have a question or need a quote? We're happy to help!