Iowa Department of Public Safety Division of Criminal Investigation

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Statistics for Story County

Previous Six Months

Month

Year

Average Alcohol Level
(g/210L)

Number of Tests

November 2024 0.116 5
October 2024 0.137 16
September 2024 0.143 13
August 2024 0.116 19
July 2024 0.168 15
June 2024 0.143 23
 

Total:

91

Year to Date

Year

Average Alcohol Level
(g/210L)

Number of Tests

2024 0.137 199
2023 0.135 346
2022 0.122 341
2021 0.135 277
2020 0.129 231
2019 0.132 295
2018 0.127 378
2017 0.118 430
2016 0.118 493
2015 0.118 554
2014 0.123 628
2013 0.119 710
2012 0.121 714
2011 0.125 688
2010 0.104 195

DataMaster CDM Historical Data *

Year

Average Alcohol Level
(g/210L)

Number of Tests

2010 0.149 450
2009 0.142 592
2008 0.142 659
2007 0.157 513
2006 0.157 737
2005 0.155 685
2004 0.156 691
2003 0.164 610
2002 0.154 422
 

Total:

5,359

* 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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