When it comes to installing a new septic system, the foundation of a successful project lies in meticulous planning and preparation. A crucial first step in this process is conducting a percolation test. At Coastline Engineering, we pride ourselves on offering comprehensive services, including site evaluations, soil reports, and percolation testing, utilizing our in-house drilling and water truck equipment. Servicing major areas in California like Los Angeles, Milpitas, and San Diego, we aim to provide reliable, efficient, and timely solutions for all your septic system needs.

What is a Percolation Test?

A percolation test, commonly known as a “perc test,” is a soil evaluation procedure that measures the rate at which water drains through soil. This test is essential for determining the suitability of the soil for a septic drain field. It helps engineers understand how quickly wastewater will be absorbed, ensuring that your septic system will function efficiently and sustainably.

Why is a Percolation Test Essential?

  1. Soil Suitability: The test determines whether the soil on your property is suitable for a septic system.
  2. Environmental Protection: Accurate testing helps to protect groundwater from contamination.
  3. Compliance: Meeting local and state regulations often require a percolation test for septic system installations.

Coastline Engineering’s In-House Services

Site Evaluations

Understanding your property’s layout is pivotal. Our team performs detailed site evaluations to assess the land contours, vegetation, and proximity to water bodies, laying the groundwork for a successful septic system installation.

Soil Reports

Through extensive soil sampling and analysis, we provide accurate soil reports that outline soil types, structure, and other pertinent information. These reports aid in determining the most efficient and sustainable septic system for your property.

Percolation Testing with In-House Equipment

At Coastline Engineering, we utilize our in-house drilling and water truck equipment to conduct precise and reliable percolation tests. Our state-of-the-art tools and expert team enable us to deliver accurate results quickly, saving you both time and money.

Servicing Major Areas in California

We are delighted to offer our specialized services in three key areas:

  • Los Angeles: Known for its bustling lifestyle, it’s crucial to have dependable septic systems to match.
  • Milpitas: In this tech-hub, efficiency is paramount, and we ensure your septic systems meet the highest standards.
  • San Diego: We offer our full range of services here, ensuring San Diego’s beautiful coastline remains pollution-free.


A percolation test is the cornerstone of any successful septic system design. By choosing Coastline Engineering, you’re opting for comprehensive, high-quality services. With our in-house equipment and expertise, you can rest easy knowing that your project is in capable hands. Covering Los Angeles, Milpitas, and San Diego, we are your go-to experts for septic system design in California.