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	Annual Toxics Summary San Jose-Jackson Street FAQs Chloroform parts per billion

Read About Estimated Risk

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit	Estimated Risk
2023		0.01	0.01	*	0.03	0.03	0.008	20	0.02	*
2022		0.01	0.01	0.017	0.03	0.04	0.010	30	0.02	1
2021		0.01	0.01	*	0.03	0.04	0.010	22	0.02	*
2020		0.01	*	*	*	0.04	0.011	9	0.02	*
2019		0.01	0.02	0.022	0.04	0.06	0.014	30	0.02	2
2018		0.01	0.03	0.029	0.05	0.08	0.014	31	0.02	2
2017		0.01	0.03	0.033	0.05	0.06	0.013	28	0.02	2
2016		0.01	0.03	0.033	0.05	0.06	0.013	31	0.02	2
2015		0.01	0.03	0.034	0.05	0.06	0.011	30	0.02	3
2014		0.01	0.03	*	0.04	0.06	0.011	27	0.02	*
2013		0.01	0.03	0.027	0.04	0.05	0.013	31	0.02	2
2012		0.01	0.02	0.020	0.04	0.06	0.013	29	0.02	2
2011		0.01	0.02	0.027	0.05	0.06	0.014	32	0.02	2
2010		0.01	0.03	0.025	0.04	0.07	0.015	30	0.02	2
2009		0.01	0.02	0.023	0.04	0.05	0.013	31	0.02	2
2008		0.01	0.02	0.021	0.04	0.05	0.012	31	0.02	2
2007		0.01	0.02	0.020	0.04	0.06	0.013	30	0.02	2
2006		0.01	0.02	0.023	0.04	0.05	0.013	30	0.02	2
2005		0.01	0.02	0.024	0.04	0.05	0.013	31	0.02	2
2004		0.01	0.03	0.029	0.05	0.06	0.015	30	0.02	2
2003		0.01	0.03	0.036	0.06	0.07	0.018	31	0.02	3
2002		0.02	*	*	*	0.06	0.017	6	0.02	*
2001		*	*	*	*	*	*	0	*	*
2000		*	*	*	*	*	*	0	*	*
1999		*	*	*	*	*	*	0	*	*
1998		*	*	*	*	*	*	0	*	*
1997		*	*	*	*	*	*	0	*	*
1996		*	*	*	*	*	*	0	*	*
1995		*	*	*	*	*	*	0	*	*
1994		*	*	*	*	*	*	0	*	*
1993		*	*	*	*	*	*	0	*	*
1992		*	*	*	*	*	*	0	*	*
1991		*	*	*	*	*	*	0	*	*
1990		*	*	*	*	*	*	0	*	*
1989		*	*	*	*	*	*	0	*	*

	Notes:	Values below the Limit of Detection (LoD) assumed to be ½ LoD. Means and risks shown only for years with data in all 12 months. "*" means there was insufficient or no data available to determine the value.