Iowa Department of Public Safety Division of Criminal Investigation

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Statewide Statistics

Previous Six Months

Month

Year

Average Alcohol Level
(g/210L)

Number of Tests

May 2019 0.134 723
April 2019 0.137 905
March 2019 0.137 1,142
February 2019 0.141 871
January 2019 0.140 964
December 2018 0.142 1,098
 

Total:

5,703

Year to Date

Year

Average Alcohol Level
(g/210L)

Number of Tests

2019 0.138 4,605
2018 0.136 12,852
2017 0.136 13,512
2016 0.136 13,888
2015 0.139 13,877
2014 0.139 14,842
2013 0.137 16,716
2012 0.137 18,453
2011 0.136 19,675
2010 0.126 6,429

DataMaster CDM Historical Data *

Year

Average Alcohol Level
(g/210L)

Number of Tests

2010 0.132 10,011
2009 0.133 16,550
2008 0.135 18,280
2007 0.134 18,511
2006 0.133 18,898
2005 0.136 17,593
2004 0.137 16,735
2003 0.134 16,041
2002 0.136 13,006
 

Total:

145,625

* The DataMaster CDM in use in Iowa from 1999 until 2011 was capable of limited data collection. This section of the website allows users to view the approximate number of tests and the average alcohol concentration of the subject for each county from 2002–2010.

This data is limited to the DataMaster CDM only. Please note, that the data may not be complete. The DataMaster CDM was capable of only holding approximately 175 tests at a time and there were situations that the memory was full and would no longer store tests until it was downloaded. Also, data may have been lost, never stored or cleared from memory prior to a download taking place.

The statistical data includes several subject tests that may have been performed by officers as "practice" and suspects that may have been impaired by substances other than alcohol therefore resulting in a zero breath alcohol result. Eliminating any test that was below 0.010 g/210 L, the statewide average over the past decade has been around 0.147 g/210 L.

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