For Immediate Release
July 11, 2018

Chippewa Lake Algal Bloom Testing

Chippewa Lake testing showed microcystin levels remained below the 6 parts per billion threshold for a third consecutive week. Samples from July 10 revealed microcystin levels of 1.6 ppb, which follows levels of 2.61 ppb in samples taken on July 2. There are no advisories in place at this time.

Per Ohio’s Harmful Algal Bloom Response Strategy for Recreational Waters, a Recreational Public Health Advisory is issued when toxin levels reach 6 ppb. It warns children, pregnant or nursing women, individuals with certain medical conditions, and pets to avoid contact with the water. When toxin levels reach 20 ppb, an Elevated Recreational Public Health Advisory is issued warning all persons and pets to avoid all contact with the water. Warnings remain in effect until two consecutive tests taken one week apart show levels have dropped below these thresholds.

Algal blooms occur due to a combination of factors including water temperature, rainfall, and nutrient runoff within the watershed. The Chippewa Lake algal bloom is the result of a microscopic organism called cyanobacteria. Its blooms can produce harmful toxins that may make people and pets sick when they come into contact with the water.

Here are the ongoing Chippewa Lake water test results for 2018:

sampkle results.jpg

Medina County Park District will continue to monitor Chippewa Lake as needed. For updates, please follow the park district on social media or visit



  For Immediate Release

  July 5, 2018

  Presentation on Algal Blooms July 24 at Wolf Creek

 Would you like to learn more about the harmful algal blooms impacting Ohio waterways, including Chippewa Lake?

Dr. Christopher Winslow, director of The Ohio State University’s Stone Laboratory and Ohio Sea Grant College Program, will offer a presentation titled, “Algae, Nutrient Loading, and Current Research Efforts,” at 10:30 a.m. on July 24 at Medina County Park District’s Wolf Creek Environmental Center. The event is free and open to the public.

Winslow will provide insight into what drives harmful algal blooms within Lake Erie, rivers and inland lakes. The presentation will include a glimpse into the more than 50 projects currently managed by Stone Laboratory and Ohio Sea Grant. These research efforts aim to:

  • Develop new methods to detect harmful algal blooms and their movements
  • Assess the health impacts of harmful algal blooms and their associated toxins
  • Develop new treatment technology to remove algal (cyanobacteria) toxins
  • Assess the ability of land use changes to reduce nutrient inputs into aquatic ecosystems

Winslow received his bachelor of science from Ohio University and his master’s degree and Ph.D. from Bowling Green State University. He has been a fixture at OSU’s Stone Laboratory since 2004, first as an instructor and research supervisor, and now as director of both the lab and Ohio Sea Grant. Winslow previously served as an assistant professor at Kutztown University of Pennsylvania (2009-11) and an instructor at BGSU (2002-09).

Medina County Park District purchased Chippewa Lake in 2007 with a Clean Ohio Fund grant and began testing for toxins in 2016 after an algal bloom was first reported. The park district has adopted a multilayered approach to address harmful algal blooms in the 330-acre lake, which can pose health risks to people and pets that come into contact with the water. These initiatives include: regular water testing, working collaboratively with the Chippewa Lake community to increase awareness and public involvement, contracting with Aqua Doc for an in-depth analysis of nutrient levels, and partnering with a Cleveland start-up on new bioreactor technology that may help manage harmful algae.

A brief question-and-answer period will follow Winslow’s presentation. Wolf Creek Environmental Center is located at 6100 Ridge Rd. in Sharon Township, just north of Sharon Center on State Route 94. For information, please contact Communications Coordinator John Gladden at 330-722-9374 or This email address is being protected from spambots. You need JavaScript enabled to view it..