Breath Alcohol

Iowa Department of Public Safety Division of Criminal Investigation

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Statistics for Tama County

Previous Six Months

Month	Year	Average Alcohol Level (g/210L)	Number of Tests
December	2024	0.109	2
November	2024	0.172	3
October	2024	0.111	6
September	2024	0.133	8
August	2024	0.132	11
July	2024	0.231	2
		Total:	32

Year to Date

Year	Average Alcohol Level (g/210L)	Number of Tests
2024	0.140	69
2023	0.143	127
2022	0.127	82
2021	0.119	75
2020	0.148	70
2019	0.131	85
2018	0.120	64
2017	0.118	77
2016	0.125	77
2015	0.144	73
2014	0.151	102
2013	0.152	69
2012	0.141	91
2011	0.140	101
2010	0.117	45

DataMaster CDM Historical Data *

Year	Average Alcohol Level (g/210L)	Number of Tests
2010	0.153	72
2009	0.151	97
2008	0.156	114
2007	0.155	118
2006	0.143	117
2005	0.146	139
2004	0.148	121
2003	0.138	176
2002	0.145	192
	Total:	1,146

* 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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