Breath Alcohol

Iowa Department of Public Safety Division of Criminal Investigation

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Statistics for Marshall County

Previous Six Months

Month	Year	Average Alcohol Level (g/210L)	Number of Tests
November	2024	0.172	6
October	2024	0.164	5
September	2024	0.107	17
August	2024	0.172	14
July	2024	0.140	13
June	2024	0.135	14
		Total:	69

Year to Date

Year	Average Alcohol Level (g/210L)	Number of Tests
2024	0.146	122
2023	0.153	178
2022	0.160	155
2021	0.150	140
2020	0.151	111
2019	0.152	150
2018	0.151	172
2017	0.147	179
2016	0.160	164
2015	0.157	119
2014	0.150	132
2013	0.158	192
2012	0.141	176
2011	0.154	168
2010	0.097	90

DataMaster CDM Historical Data *

Year	Average Alcohol Level (g/210L)	Number of Tests
2010	0.133	165
2009	0.156	74
2008	0.148	261
2007	0.137	232
2006	0.150	210
2005	0.148	221
2004	0.164	127
2003	0.164	177
2002	0.154	185
	Total:	1,652

* 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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