San Bernardino County · California

Septic soil testing in San Bernardino County

San Bernardino County septic soil testing, percolation testing, and soil-profile documentation for local cities, towns, and unincorporated communities. Find county and locality-specific planning guidance before scoping field work.

Parcel-specific service

Test the proposed disposal area

Septic soil testing evaluates the proposed disposal area—not just the general neighborhood. Percolation test results, soil layers, groundwater or bedrock evidence, slope, setbacks, and replacement-area needs all help establish a parcel-specific design basis.

For County-reviewed projects, confirm current advance-notice, testing, reporting, and qualified-professional requirements with Environmental Health Services. Incorporated projects may have separate city and sewer-purveyor requirements.

Read the County percolation-testing guide

Local conditions vary

There is no county-wide soil or perc result

Alluvial sand and gravel, fine basin soils, caliche, shallow rock, fill, washes, slopes, and groundwater conditions vary across the county and within communities. A soil map or nearby test can inform planning but cannot establish a parcel's percolation rate.

01 · Confirm

Jurisdiction and sewer

Identify the city or County review path and whether sewer connection is available or required.

02 · Evaluate

Soil and site conditions

Connect the soil profile and measured field behavior to slopes, drainage, setbacks, and proposed grading.

03 · Plan

Primary and reserve areas

Keep the disposal layout coordinated with the building, access, utilities, wells, and replacement area.

Browse the local guides

Septic soil testing by city, town, and community

Choose the closest community for location-specific context. Each guide explains local terrain and jurisdiction questions; agency responsibility and design criteria still need to be confirmed for the exact parcel.

Official permitting references

San Bernardino County septic requirements

Regulatory documents and review procedures can change. Confirm the applicable agency, current forms, parcel restrictions, and project requirements before work begins.

  1. Environmental Health Services — Land Use and Wastewater County overview of OWTS, LAMP, percolation reports, and wastewater services.
  2. San Bernardino County Local Agency Management Program County OWTS siting, design, operation, and management framework.
  3. Percolation Testing and Reporting Standards Current field and reporting standards linked by County Environmental Health Services.

Related local guidance

Explore the other steps in the septic process.

Septic system design directory San Bernardino County percolation testing Calicore soil testing for septic systems overview