Breath Alcohol

Iowa Department of Public Safety Division of Criminal Investigation

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Statistics for Black Hawk County

Previous Six Months

Month	Year	Average Alcohol Level (g/210L)	Number of Tests
April	2024	0.137	36
March	2024	0.146	60
February	2024	0.135	45
January	2024	0.130	42
December	2023	0.148	55
November	2023	0.134	38
		Total:	276

Year to Date

Year	Average Alcohol Level (g/210L)	Number of Tests
2024	0.138	183
2023	0.142	565
2022	0.150	550
2021	0.149	628
2020	0.145	518
2019	0.151	518
2018	0.143	520
2017	0.152	541
2016	0.159	514
2015	0.163	636
2014	0.156	721
2013	0.160	999
2012	0.152	1,138
2011	0.152	1,187
2010	0.152	376

DataMaster CDM Historical Data *

Year	Average Alcohol Level (g/210L)	Number of Tests
2010	0.156	324
2009	0.155	668
2008	0.150	929
2007	0.148	941
2006	0.139	1,001
2005	0.152	961
2004	0.149	916
2003	0.152	706
2002	0.157	529
	Total:	6,975

* 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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