Michigan Indoor Radon Results [Michigan]
State of Michigan Open Data Portal · 2025 Full Details
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Full Details
- Title
- Michigan Indoor Radon Results [Michigan]
- Description
- EGLE's Michigan Indoor Radon Map was created with data supplied to the state by organization(s) that manufacture and/or analyze short term radon test kits. This tool is intended to help citizens have an understanding of radon concentrations in a given zip code and how indoor radon levels are geologically dependent. It also assists the EGLE radon outreach specialist in identifying areas with low/no testing rates and areas with higher likelihoods of increased indoor radon presence. Data (indoor radon concentration) is collected from organization(s) willing to provide information, which is then filtered to include values associated with first time tests and without active radon mitigation systems. Full analytical data will not be displayed for zip codes with less than 5 test results, only the test kit count will be shown. A zero value indicates insufficient data for analysis and a null value indicates no tests were provided. Statistical analysis has only been done on first time radon tests. It should be noted that in several zip codes total number of tests indicates either first time tests, follow up tests, post repair tests, testing for real estate, or unknown testing. Email radon@michigan.gov for any questions relating to the data. The dataset includes results for approximately the preceding 10 years. Data will be refreshed at a rate no more frequently than monthly, but at least quarterly. A full new dataset will be provided for each transmittal. Download the data behind this map on EGLE's Open Data Portal . View the Web App . Field Name Description ZipCode ZIP Code Number POName Post Office Name MinimumRadonLevel Minimum value of 1sttime tests* MaximumRadonLevel Maximum value of 1sttime tests* TotalTests Count of total number of radon tests done* TotalFirstTimeTests Count of total number of 1sttime radon tests done* AverageRadonLevel Mean value of 1sttime tests * Shown on the Map As: < 2 pCi/L (Retest every 2 -5 years) ≥ 2 - 3.9 pCi/L (Mitigation Suggested) ≥ 4 pCi/L (Mitigation Recommended) MedianRadonLevel Median value of 1sttime tests* TestsGreaterThan2pCi Count of 1sttime tests greater than 2 pCi/L* TestsGreaterThan4pCi Count of 1sttime tests greater than 4 pCi/L* PercentTestsGreaterThan2pCi Number of 1st time tests above 2 pCi/L divided by the total number of 1sttime tests* PercentTestsGreaterThan4pCi Number of 1st time tests above 4 pCi/L divided by the total number of 1sttime tests* LastUpdatedDate Date of last update. Data does not always change with each update. *IMPORTANT NOTE: Full analytical data will not be displayed for zip codes with less than 5 test results, only the test kit count will be shown. A zero value indicates insufficient data for analysis and a null value indicates no tests were provided. Disclaimer: EGLE makes every attempt to ensure data accuracy but cannot guarantee the completeness or accuracy of the information contained within these datasets. The purpose of this map is to assist residents with understanding radon risk potential. This map is not intended to be used to determine if a home in a given area should be tested for radon. Homes with elevated levels of radon have been found in all 83 counties. All homes should be tested regardless of geographic location. ZIP code boundaries do not correspond to legal or administrative boundaries and were originally created for postal delivery purposes. ZIP code boundaries are subject to change over time and are not precise due to the linear nature of postal routes. This dynamic nature makes ZIP codes less reliable for long-term geographical analysis. The USPS does not offer up an authoritative layer for use by mapping professionals. The ZIP code boundaries used in this analysis are sourced from ESRI .
- Creator
- Michigan Dept. of Environment, Great Lakes, and Energy
- Publisher
- State of Michigan Open Data Portal
- Temporal Coverage
- Last Modified: 2025-09-04
- Date Issued
- 2025-03-25
- Rights
- This application or dataset, along with any maps, data, content and other information contained within it and all output from the application (together the “Information”), is provided as a public service, and there are no restrictions on the use, reproduction, or distribution of the Information. It is your responsibility to use the Information for a legally permissible purpose. This Information is provided “AS IS” and on an “AS AVAILABLE” basis. The State of Michigan (“State”) makes no warranties, express or implied, regarding the accuracy, adequacy, reliability, timeliness, or completeness of this Information. THE STATE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS INFORMATION, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NONINFRINGEMENT OF PROPRIETARY RIGHTS. THE STATE WILL NOT BE LIABLE, REGARDLESS OF THE FORM OF ACTION, WHETHER IN CONTRACT, TORT, NEGLIGENCE, STRICT LIABILITY OR BY STATUTE OR OTHERWISE, FOR ANY CLAIM FOR CONSEQUENTIAL, INCIDENTAL, INDIRECT, OR SPECIAL DAMAGES, INCLUDING WITHOUT LIMITATION LOST PROFITS AND LOST BUSINESS OPPORTUNITIES, RELATED TO THE ACCESS OR USE OF THIS INFORMATION. IN NO EVENT WILL THE STATE BE LIABLE FOR ANY AMOUNTS THAT MAY RESULT FROM THE ACCESS OR USE OF THIS INFORMATION, REGARDLESS OF THE FORM OF ACTION, WHETHER IN CONTRACT, TORT, NEGLIGENCE, STRICT LIABILITY, OR BY STATUTE OR OTHERWISE. By accessing or using this Information, you agree that you will not make any claims against the State or any of its departments, divisions, officers, or employees related to your use of the Information. These terms are governed by and interpreted under the laws of the State of Michigan without regard to conflict of laws provisions. Nothing in these terms is meant to impact or replace any existing rights or licenses, such as copyright, trademark, or patent protections, in materials or content that may be located on the site or portal containing the Information.
- Access Rights
- Public
- Format
- ArcGIS FeatureLayer
- Language
- English
- Date Added
- August 10, 2025
- Provenance Statement
- The metadata for this resource was last retrieved from State of Michigan Open Data Portal on 2026-01-08.
Cite and Reference
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Citation
Michigan Dept. of Environment, Great Lakes, and Energy (2025). Michigan Indoor Radon Results [Michigan]. State of Michigan Open Data Portal. https://gis-michigan.opendata.arcgis.com/datasets/egle::michigan-indoor-radon-results-3 (web service) -
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