Other Waterproofing and Concrete Services

• CORING

  NWCW provides concrete coring from 2″ up to 24″ in diameter, to tie in sewer service to underground assets, including building foundations. Offering this service allows us to ensure live sewer connections and time-sensitive work can be completed in-house, without delay.

• ASPHALT & CONCRETE SAW-CUTTING

• ACCESS REHABILITATION

  NWCW offers ladder and step replacement to manholes, lift stations and other system assets

• MANHOLE COATINGS TESTING

  We offer adhesion testing and holiday testing

• OIL/WATER SEPARATOR MAINTENANCE

  NWCW provides maintenance and repair of oil/water separators. Services may include

  • baffle replacement

  • chemical grouting repair and coating

  •  crack injection repair

  • filter cartridge change-outs

• VACUUM TESTING

  NWCW offers vacuum testing of sewer manholes for potential leaks, and will make any needed repairs on the spot.