Inspections & Testing2018-07-03T20:24:51+00:00

Robotic Video Inspections

  • Checks sewer lines for cracks, deterioration, blockages and root infiltration

  • Examines crawl spaces or other tight quarters for utility chases, foundation issues, piping, etc.

  • Assists in problem diagnosis as well as preventive maintenance

  • Documents conditions and records tap or other feature locations

Flow Monitoring

  • Checks for ground water infiltration

  • Minimizes treating water that is already clean

  • Assesses volume of water flowing into pipes during dry and wet weather

  • Determines hydraulic loading of storm sewer systems

  • Can prevent and eliminate flooding when performed in ditches and canals

Visit Water Infrastructure

Sewer Testing for New Construction

  • Checks manholes and pipes for leakage before putting them into service in new construction areas

  • Certifies piping by checking for straightness, pressure, mandrels, etc.

Push Camera Inspections

  • Alternative to video camera inspections

  • Great for spaces too small to accommodate our robotic video camera

Exceptional Service. Nothing Less.


TWM continues the important business of supporting our nation’s essential infrastructure in these uncertain times. We are committed to our mission of providing Exceptional Service, Nothing Less to you, our clients and partners. As a professional services firm, the health of our employee-owners and their families is paramount. We are following government directives and public health guidance, implementing work-from-home and other social distancing and hand hygiene practices. We have employed additional technological resources to support our modified operating structure, and we expect to be able to do so with minimal disruption. If you need to visit our offices in person or have trouble reaching your TWM contact, please contact us at 618.624.4488 so we can make arrangements or put you in touch with the appropriate person. Thank you for placing your trust in TWM. Wishing you safety and good health.