Detailed search for your lake

This database contains the most current toxicity data available. All instances of values above the recreational guidelines are kept as up to date as possible, but values below the guidelines may be somewhat delayed in entry.Since there is a lag time from the date of sample to the date of analysis, be sure to check the sample date when looking at data or before you use the lake. Remember to use caution and avoid scums. "When in doubt, stay out!"

Your local jurisdiction may have more specific information about your lake. Questions? Contact Lizbeth Seebacher at Department of Ecology.

If a lake is not listed, it has not been tested for toxic algae through the Ecology program.

The pins on the map represent the center of small lakes, regardless of where the sample was taken. To find more precise location information, download the toxin data and click the "view scum info" link. That is where specific sampling location information will be if it was provided. On larger lakes, (such as Lake Washington, Moses Lake and Potholes) pins represent the location of the sample if provided.

CountyWRIA NumberSiteCollect DateParameterToxin Conc. (µg/L)MDL (µg/L)Above State GuidelineAdditional InformationSample LocationEcology Tracking Number
Pierce15Lake Minterwood08/12/2019Anatoxin-a<MDL0.010NoNo MINTPIER318_19_146
Pierce15Lake Minterwood08/12/2019Microcystin25.9000.150YesNo MINTPIER318_19_146
Pierce15Lake Minterwood07/23/2019Anatoxin-a<MDL0.010NoNo MINTPIER318_19_099
Pierce15Lake Minterwood07/23/2019Microcystin16.4000.150YesNo MINTPIER318_19_099
Pierce15Lake Minterwood07/08/2019Microcystin242.0000.150YesView MINTPIER318_19_072
Pierce15Lake Minterwood05/14/2019Microcystin137.0000.150YesView MINTPIER318_19_023
Pierce15Lake Minterwood06/14/2018Anatoxin-a<MDL0.010NoNo MINTPIER318_18_060
Pierce15Lake Minterwood06/14/2018Cylindrospermopsin<MDL0.025NoNo MINTPIER318_18_060
Pierce15Lake Minterwood06/14/2018Microcystin<MDL0.150NoNo MINTPIER318_18_060
Pierce15Lake Minterwood06/14/2018Saxitoxin<MDL0.020NoNo MINTPIER318_18_060

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As of 6/26/2018 the format of the toxin and phytoplankton export has changed. A unique identification number has been added to each site.

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