top of page
Grayline Icon WhtRed.png
Grayline Icon WhtRed.png

Septic system Design

experienced & hands on
we bring our high standards, experience and integrity to every system we install
our commitment to OUR customers:
we will be with you every step of the way; beginning with the design process through to the final installation and finishing up with a walk through of your new system. 

The purpose of a design is to create a blueprint for your septic system. Grayline will align you with a certified and experienced septic design consultant. The designer will complete a design based on information about your home including the number of bedrooms, square footage, the lot layout, as well as complete a soil analysis to determine the soil structure and content. We then use the design to install a system which is affordable and effective. We will give you the tools and knowledge to easily operate and maintain your system with the end goal being environmental protection. 

Grayline Contracting guarantees to provide a highly competitive price against any other installation quote from a qualified septic contractor.
avoid an improperly designed

The number one issue that we see is a septic system that was improperly designed and/or installed too small for the conditions. The cost of the least expensive contractor generally results in a shorter life of your septic system before saturating and requiring a rebuild. If the builder or contractor's warranty period has expired then you are facing replacement costs of $15,000 – $35,000.

we provide a
5 year warranty!

After 54 years of septic installations, we are confident that what we install will stand the test of time. Grayline septic systems are dependable, efficient and worry free when maintained properly. 

Experience matters — we work with the best!

Grayline has well over 2000 septic systems in operation. We ensure that all of our designers are not only certified but are also highly experienced.


Septic system design, like any other skilled field, requires years of experience and proper mentoring to produce an independent professional.

The current building code requires that you use a Certified Designer.
the benefits of using a Certified Designer are: 
  • A wealth of experience coupled with specialized training and education allowing them to develop high-performing septic systems that will match the needs of your family in the most efficient way.

  • A properly designed septic system protects the environment from contamination while providing an efficient and cost-effective method for sewage and wastewater treatment.

  • Today's more stringent design guidelines ensure less environmental impact.

  • A properly constructed design will meet all requirements ensuring acceptance at any MD or County office when applying for the necessary permits. 

When deciding on your design specialist, please confirm their training, years of experience in the field, and get referrals. We are more than happy to provide advice and recommendations on this. 

Please also take a look at our testimonials page and Google reviews. 

Soil Analysis:

In previous years soil analysis was completed through a percolation test. This process has since been determined by science to be unreliable and could not be replicated. Today the design company will excavate a test pit 8 feet deep in several areas where the septic field will be installed. A soil profile is developed and recorded. Soils samples are collected and sent to Kaizen Laboratory Services who determine the sand, silt and clay content. With that information, excavation experience, and the science based flow rate charts, the designer will determine the linear loading rate. Basically this tells us how much wastewater we can safely load onto each square foot of the septic field so it can work efficiently.

Today's more stringent design guidelines ensure less environmental impact and a system expertly tailored to the needs of your home and family.
bottom of page