On-Site Wastewater Treatment System (OWTS) Designs

K+A provides unique OWTS designs for residences along the Front Range and challenging mountain properties.  Our extensive experience in providing site evaluations for residential development helps us provide the right OWTS for your project.  Our understanding of current County and State regulations reduces the risk of delays and design changes during the permitting process.

  • Standard Systems including Trenches, Beds and Chambers
  • Pressure Distribution and Dosing Systems
  • Higher Level Treatment Systems
  • Mounded and Unlined Sand Filters
  • Non-Pressurized Drip Dispersal Systems (NDDS)
  • Soil Replacement including Processing and Reuse of Existing Soil and Bedrock
  • As-Built Evaluations

Designers, for your next project we are able provide visual and tactile evaluations of soil profile test pit excavations in the area of the proposed Soil Treatment Area (STA) to establish a Long-Term Acceptance Rate (LTAR) of the soils and determine if a limiting layer is present.


Thank you again for your support on this project.  You (James Parker) and your team delivered exceptional service.

You are lucky to have an employee like Lena (Fowlkes). Her professionalism, flexibility, and can do approach to accommodate my needs were exemplary. She really went the distance to help make things happen. And her attitude/pleasant humor is hugely appreciated.

Equally up to par is field fella Chris (Newberry). He is always a pleasure to have at the site and makes it happen, no matter how we jostle around the work and call in a panic.

Look forward to more successful projects with the help of good people like you have (at Kumar).

Working at Kumar & Associates has been a great experience. The company treats its employees with the utmost respect and appreciation. The mentorship and coaching for me as a young engineer has been a blessing and has helped me grow as I work towards my P.E. The company is privately held, employee-owned, and well-established in the industry. I am thankful for the opportunity to work here and the investment that has been made in me by Kumar & Associates.