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	Annual Toxics Summary Fresno-Garland FAQs Methylene Chloride 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
2025		0.05	0.10	*	0.12	0.12	0.031	20	0.10	*
2024		0.05	0.10	0.088	0.12	0.13	0.030	30	0.10	0.9
2023		0.05	0.05	0.065	0.10	0.18	0.032	30	0.10	0.6
2022		0.05	0.05	*	0.05	0.10	0.011	19	0.10	*
2021		0.05	0.05	*	0.05	0.05	0.000	17	0.10	*
2020		0.05	*	*	*	0.15	0.041	7	0.10	*
2019		0.05	0.05	0.072	0.13	0.20	0.041	29	0.10	0.7
2018		0.05	0.05	0.092	0.17	0.24	0.058	31	0.10	0.9
2017		0.05	0.10	0.115	0.16	0.60	0.107	29	0.10	1
2016		0.05	0.10	0.097	0.16	0.27	0.054	31	0.10	1
2015		0.05	0.05	0.096	0.19	0.24	0.059	30	0.10	0.9
2014		0.05	0.05	0.106	0.21	0.29	0.076	30	0.10	1
2013		0.05	0.05	0.103	0.17	0.29	0.060	31	0.10	1
2012		0.05	0.05	0.083	0.12	0.39	0.070	29	0.10	0.8
2011		*	*	*	*	*	*	0	*	*
2010		*	*	*	*	*	*	0	*	*
2009		*	*	*	*	*	*	0	*	*
2008		*	*	*	*	*	*	0	*	*
2007		*	*	*	*	*	*	0	*	*
2006		*	*	*	*	*	*	0	*	*
2005		*	*	*	*	*	*	0	*	*
2004		*	*	*	*	*	*	0	*	*
2003		*	*	*	*	*	*	0	*	*
2002		*	*	*	*	*	*	0	*	*
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.