Fig. 3. Toxicity and Urban Land Use

<p>The percentage of toxic and non-toxic <em>Hyalella azteca</em> samples collected from 2008 to 2017, based on increasing urban land use (&lt; 25% Urban, &lt;50% Urban, &lt;75% Urban, &lt;100% Urban). The land use category is based on percent urban land use at 5km. As in, how much of the area within 5km of a sampling site is classified as urban. This dataset was created for the 2019 Water Quality Status Report. It was compiled using data from the <a href="https://www.waterboards.ca.gov/water_issues/programs/swamp/spot/">Stream Pollution Trends (SPoT) Monitoring Program</a>, part of the Surface Water Ambient Monitoring Program at the State Water Resources Control Board.</p>