Iowa Department of Public Safety Division of Criminal Investigation

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Statistics for Polk County

Previous Six Months

Month

Year

Average Alcohol Level
(g/210L)

Number of Tests

May 2019 0.143 89
April 2019 0.159 124
March 2019 0.140 138
February 2019 0.144 140
January 2019 0.152 108
December 2018 0.154 157
 

Total:

756

Year to Date

Year

Average Alcohol Level
(g/210L)

Number of Tests

2019 0.148 599
2018 0.150 1,694
2017 0.148 1,578
2016 0.145 1,673
2015 0.149 1,503
2014 0.145 1,910
2013 0.141 2,007
2012 0.138 2,139
2011 0.141 2,353
2010 0.124 567

DataMaster CDM Historical Data *

Year

Average Alcohol Level
(g/210L)

Number of Tests

2010 0.148 929
2009 0.147 1,444
2008 0.148 1,889
2007 0.152 1,742
2006 0.141 1,737
2005 0.153 1,412
2004 0.152 1,408
2003 0.151 872
2002 0.156 938
 

Total:

12,371

* 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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