# Electrical Resistivity Tomography (ERT)

**URL:** https://aqualisco.com/service/electrical-resistivity-tomography-ert/
**Author:** YouTech Agency
**Published:** November 27, 2024

> A geotechnical assessment that utilizes electricity to gather soil data and geological variations.

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									Geotechnical Assessments

								
				
				
				
				
					
# ELECTRICAL RESISTIVITY TOMOGRAPHY (ERT) 
				
				
				
				
				
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## What is Electrical Resistivity Tomography (ERT)?
				
				
		
				
				
									Electrical Resistivity Tomography (ERT) is a geotechnical assessment that utilizes electricity to gather soil data and geological variations. To perform the assessment, an electrical current is introduced on the soil surface, or through boreholes; data is gathered based on the resistance of the subsurface. Soil resistivity varies based on the density of the subsurface, the presence of water as well as utilities or infrastructure, all of which is reflected in the data from the assessment. This method is best for identifying sinkholes and other subsurface cavities.  

								
				
		
				
				
									
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															![uprooted tree in a forest](https://aqualisco.com/wp-content/uploads/2024/11/sinkhole.jpg)															
				
		
		
				
				
					
## AQUALIS Uses ERT to Assess Soils
				
				
				
				
									ERT is a test that assesses the resistivity of soil, which is the opposite of conductivity. Understanding the resistivity of soil allows experts to understand the type of soil underground. This assessment helps professionals delineate between a naturally occurring [sinkhole](https://aqualisco.com/service/stormwater-management/stormwater-repairs-rehabilitations/sinkholes/) or a sinkhole due to failing infrastructure. Understanding the subsurface also allows AQUALIS professionals to best prepare for potential challenges associated with construction in the area in a non-invasive manner. 

								
				
				
		
				
				
					
### Uses for ERT
				
				
		
		
				
				
							
			
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									Monitoring Groundwater Contamination

								
				
				
		
				
				
							
			
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									Groundwater Recharge Studies

								
				
				
		
				
				
							
			
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									Detecting Voids and Cavities

								
				
				
		
				
				
							
			
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									Assessing Soil Properties

								
				
				
		
				
				
							
			
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									Soil & Groundwater Remediation

								
				
				
		
				
				
							
			
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									Pipeline & Utility Mapping

								
				
				
				
				
				
					
				
		
					
				
				
							
			
		
						
				
					
				
		
		
					
		
				
				
					

		
		
		
		

  
  	
  
  
	

  
  
  
	
  
  

				
				
		
		
		
				
				
					
## The property owners called AQUALIS for a geological survey of the area and understand the cause of the issue.
				
				
				
				
									**Sinkhole Leads to Stormwater Rehabilitation | Durham, N.C.**

								
				
		
				
				
									[Read the Full Case Study](https://aqualisco.com/case_study/durham-n-c-sinkhole-leads-to-stormwater-system-rehabilitation/)

								
				
				
				
							
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## The town issued a zoning violation to the property owner. All retention ponds in this municipality are required to have functional aeration fountains sized appropriately for the size of the pond.
				
				
				
				
									**NOV Resolution | Pataskala, Ohio**

								
				
		
				
				
									[Read the Full Case Study](https://aqualisco.com/case_study/pataskala-oh-pond-aeration/)

								
				
				
				
							
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## This client is required by the local municipality to inspect and repair the stormwater system on their property to full compliance every five years.
				
				
				
				
									**Corrective Stormwater Maintenance | Broward County, Fla.**

								
				
		
				
				
									[Read the Full Case Study](https://aqualisco.com/case_study/broward-county-fla-corrective-maintenance-protects-assets/)

								
				
				
				
							
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## Our Certifications
				
				
				
				
							
			
						
		
						
				
				
		
				
				
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									[View All Certifications](https://aqualisco.com/)

								
				
				
				
							
			
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## Did you receive an NOV? Have an urgent need? We can help. 
				
				
				
				
									Notices of Violation (NOVs) or Corrective Notices should be taken seriously. Contact AQUALIS today to learn how to resolve the issue and comply with regulations. 

								
				
				
		
				
				
									
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## Categories

- Geotechnical Assessments