Breath Alcohol

Iowa Department of Public Safety Division of Criminal Investigation

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Statistics for Linn County

Previous Six Months

Month	Year	Average Alcohol Level (g/210L)	Number of Tests
April	2024	0.150	12
March	2024	0.161	48
February	2024	0.140	37
January	2024	0.165	47
December	2023	0.155	45
November	2023	0.123	48
		Total:	237

Year to Date

Year	Average Alcohol Level (g/210L)	Number of Tests
2024	0.156	144
2023	0.149	555
2022	0.154	550
2021	0.156	547
2020	0.151	548
2019	0.148	674
2018	0.151	566
2017	0.152	703
2016	0.153	673
2015	0.154	792
2014	0.154	833
2013	0.150	927
2012	0.146	1,008
2011	0.146	1,014
2010	0.119	416

DataMaster CDM Historical Data *

Year	Average Alcohol Level (g/210L)	Number of Tests
2010	0.146	559
2009	0.156	802
2008	0.153	970
2007	0.147	1,109
2006	0.149	1,146
2005	0.144	1,098
2004	0.141	1,103
2003	0.134	1,372
2002	0.133	636
	Total:	8,795

* 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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