Surface Water Workgroup

four wavy white lines indicating water

Mission:

To collect surface water and fish tissue samples to determine the need for fish consumption advisories, locate sources of PFAS contamination, and determine if treatment reduces PFAS levels.

The Surface Water Workgroup consists of representatives from Michigan Department of Environment, Great Lakes, and Energy, Remediation and Redevelopment Division and Water Resources Division (WRD) and representatives from Michigan Department of Health and Human Services (MDHHS).

Recent Accomplishments:

  • On September 21, 2020, surface water samples were collected from the Shiawassee River watershed. All 60 samples had PFOS concentrations less than the PFOS Water Quality Standard (WQS) and ranged from nondetect to 11.4 parts per trillion (ppt) 33 of the 60 collected samples had nondetectable concentrations of PFOS.
  • On October 14, 2020, additional sampling was conducted in the Regan Drain of the Huron River watershed to continue EGLE's PFAS source tracking investigation. Three sampling locations exceeded the WQS for PFOS. The highest concentration of PFOS (89 ppt) was in the Regan Drain near Burelle Avenue. Upstream of this location at South Huron Road, PFOS was 2.2 ppt. Further investigations are being planned to determine the source of contamination to the Regan Drain.
  • On October 14, 2020, EGLE collected fish from the Black River (St. Clair County) and the Howe Drain for PFAS and other contaminant analyses. Results are expected back in early 2022.
  • On October 19 and 20, 2020, surface water samples were collected from the Rouge River watershed. Three samples in the Lower Rouge River watershed exceeded the PFOS WQS. PFOS was 429, 85, and 14.5 ppt in the Horner Drain, the Sines Drain, and the McClaughrey Drain, respectively. Further investigation is being planned to determine the sources of contamination to the Rouge River watershed. Fish were collected from the main branch, lower branch, and middle branch in 2021. Results are expected back in 2022.  The MDHHS Eat Safe Fish advisories currently exist in the lower and main branch of the Rouge River due to PCBs and mercury. Anglers should visit the Eat Safe Fish page for southeast Michigan for specific guidance.
  • Between November 7 and 10, 2020, surface water samples were collected from three watersheds: the Escanaba, Chocolay , and Tacoosh-Whitefish Rivers. All 13 surface water samples collected from the Escanaba River watershed were below the Rule 57 WQS for PFOS and less than 3 ppt. In the Chocolay River watershed, two samples from Silver Lead Creek exceeded the WQS for PFOS and ranged from 23 to 28 ppt. In the Tacoosh-Whitefish River, a sample collected from Portage Creek had a PFOS concentration of 18 ppt and exceeded the PFOS WQS. An MDHHS Eat Safe Fish advisory currently exists for Silver Lead Creek due to PFOS. Anglers should visit the Michigan PFAS Action and Response Team (MPART) Eat Safe Fish page for specific guidance.
  • On January 1, 2021, the Keweenaw Bay Indian Community collected rainbow smelt from Portage Lake near Houghton for EGLE. The fish will be analyzed for PFAS and other contaminants. Results are expected back in 2022.
  • On January 19, 2021, 14 surface water samples were collected from the Paw Paw River watershed. No samples exceeded the WQS for PFOS and PFOA. The highest PFOS concentration (11.7 ppt) was observed in Ox Creek near Benton Harbor. Fish sampling in Ox Creek for edible portion contaminant monitoring was completed on July 22, 2021.
  • On January 28, 2021, EGLE collected fish from Jones Lake near the Capital Region International Airport in Lansing as well as Historical Village Pond in Okemos for PFAS and other contaminant analyses. Results are expected back in 2022.
  • On February 2, 2021, EGLE collected rainbow smelt from Gull Lake near Kalamazoo. The fish will be analyzed for PFAS and other contaminants. Results are expected back in 2022.
  • On February 18, 2021, EGLE collected fish from Vandercook Lake in Jackson County and Fish Lake in Livingston County for PFAS and other contaminant analyses. Results are expected back in 2022.
  • On February 26, 2021, EGLE collected rainbow smelt from Higgins Lake for PFAS and other contaminant analyses. Results are expected back in 2022.
  • On March 4, 2021, the United States Fish and Wildlife Service collected rainbow smelt from the Thunder Bay River near Alpena for EGLE. The fish will be analyzed for PFAS and other contaminants. Results are expected back in 2022.
  • On March 9, 2021, 26 surface water samples were collected from the upper Clinton River watershed. This sampling was initiated due to elevated PFOS observed in fish collected from Cass Lake and the Clinton River upstream of the Yates Park Dam. In addition, EGLE received a targeted monitoring request to sample the river near landfills located in Rochester Hills. No surface water samples exceeded WQS for PFOS or PFOA. The highest PFOS concentration (9.4 ppt) was observed in the Whitehorse Lake outlet.
  • On March 16, 2021, 3 surface water samples were collected from the Looking Glass River watershed near Community Lake Park near Portland. These samples were collected in response of a targeted monitoring request to investigate the use of an unknown class of firefighting foam used to extinguish a fire in the early 1990s. An unnamed tributary to the Looking Glass River at Cutler Road had a PFOS concentration of 39.8 ppt, which exceeds the WQS. The two samples collected from the Looking Glass River were below WQS and around 1 ppt for both PFOS and PFOA.

three images of staff on banks of streams reaching to collect a water sample

  • On March 16, 2021, 18 surface water samples were collected near Grass Lake in Jackson. This investigation was initiated following the receipt of results of fish samples collected from Grass Lake indicating elevated PFOS concentrations. All surface water samples from Grass Lake, Tims Lake, and the Grass Lake drain had nondetectable levels of PFOS and PFOA. Only PFBA (1.3 to 7.1 ppt), PFHpA (1.1 to 1.5 ppt), PFHxA (1.1 ppt), and PFPeA (0.7 to 5.2 ppt) were detected in these samples.
  • On March 17, 2021, the Keweenaw Bay Indian Community collected rainbow smelt from Lake Superior in Keweenaw Bay for EGLE. The fish will be analyzed for PFAS and other contaminants. Results are expected back in 2022.
  • On March 23, 2021, surface water samples were collected from three tributaries to the Grand River. Three surface water samples were collected from Egypt Creek near Ada to fulfill a targeted monitoring request to investigate a historical landfill situated along the creek. All three samples were nondetect for PFOS and PFOA. A sample was also collected from Indian Mill Creek and Plaster Creek in Grand Rapids at fish collection locations. The fish were sampled due to elevated PFOS concentrations observed in both tributaries during the 2019 Grand River watershed investigation. Neither sample exceeded the WQS for PFOS or PFOA. PFOS and PFOA in Indian Mill Creek were detected at 2.4 and 1.8 ppt, respectively. PFOS and PFOA in Plaster Creek were detected at 8.8 and 3.7 ppt, respectively. Results are expected back in 2022.
  • On March 25, 2021, EGLE collected fish from the Flat River north of the dam in Lowell for PFAS and other contaminant analyses. Results are expected back in 2022.
  • On March 30, 2021, 13 surface water samples were collected from the Squaconning Creek watershed near Freeland. This effort was initiated due to an elevated (8.9 ppt) PFOS concentration observed in Dutch Creek in 2019. Squaconning Creek flows to Dutch Creek and then to the Saginaw River. Two surface water samples exceeded the PFOS WQS. The North Branch of Squaconning Creek had a PFOS concentration of 45.7 ppt. The West Branch of Squaconning Creek had a PFOS concentration of 37.3 ppt. Fish have been collected from Squaconning Creek for PFAS analysis. Results are expected back in 2022.
  • On April 13, 2021, EGLE collected fish from Tamarack Lake in Cato Township and Lake Macatawa in Holland for PFAS and other contaminant analyses. Results are expected back in 2022.
  • On April 20, 2021, 23 surface water samples were collected from the Macatawa River watershed near Holland. Two samples from the Maplewood Drain exceeded the PFOS WQS with concentrations of 86.5 and 20.9 ppt. Fish were collected from Lake Macatawa for PFAS analysis. Results are expected back in 2022.
  • On April 20, 2021, the Michigan Department of Natural Resources (MDNR) collected rainbow smelt from the Union River in the Upper Peninsula for EGLE. The fish will be analyzed for PFAS and other contaminants. Results are expected back in 2022.
  • On April 22, 2021, EGLE collected fish from the Ecorse River and the Frank and Poet Drain for PFAS and other contaminant analyses. Results are expected back in 2022.
  • On April 21, 2021, the MDNR collected rainbow smelt from the Little Gratiot River in the Upper Peninsula for PFAS and other contaminant analyses. Results are expected back in 2022.
  • On April 21, 2021, the Bay Mills Indian Community collected rainbow smelt from Ankodosh Creek near Tahquamenon for EGLE. The fish will be analyzed for PFAS and other contaminants. Results are expected back in 2022
  • On April 22, 2021, the MDNR collected fish from Ford and Belleville Lake impoundments of the Huron River for PFAS and other contaminant analyses. Results are expected back in 2022.
  • Between April 13 and April 29, 2021, surface water samples were collected near three airports for PFAS analysis. Four surface water samples were collected near the Chippewa County Airport. Only one sample exceeded the WQS for PFOS collected from Hutton Creek with a PFOS concentration of 18 ppt. Five surface water samples were collected near the Gogebic County airport. PFOS was nondetect in four of these samples with the sole detection being in Mud Creek at 1.4 ppt. Two surface water samples were collected near the Lakeview-Griffith Field Airport. Both samples were collected from Tamarack Lake and had nondetectable PFOS concentrations. One sample had a detectable PFOA concentration at 1.1 ppt.
  • On April 24, 2021, EGLE collected fish from Silver Lead Creek in Gwinn for PFAS and other contaminant analyses. Results are expected back in 2022.
  • On April 27, 2021, EGLE collected fish from the Pigeon River downstream of White Pigeon for PFAS and other contaminant analyses. Results are expected back in 2022.
  • On April 29, 2021, EGLE collected fish from the Beaver Dam Pond of Helmer Creek near Battle Creek for PFAS and other contaminant analyses. Results are expected back in 2022.

Assorted surface water (lake, river, outfall) sampling locations

  • On May 4, 2021, EGLE deployed Polar Organic Chemical Integrative Samplers (POCIS)in the Flint River watershed at 13 locations. The samplers were deployed for 28 days and retrieved on June 1, 2021, for PFAS analysis; results are pending. This study will give us a better indication as to which tributaries are contributing to the highest PFAS contamination to the Flint River. Additionally, surface water grab samples were collected from 42 locations throughout the watershed. Two samples exceeded WQS for PFOS. A sample collected from the Cornwell Drain had a PFOS concentration of 98.1 ppt and a sample collected from Gilkey Creek had a PFOS concentration of 13.4 ppt.
  • On May 6, 2021, the MDNR collected fish from Union Lake of the St. Joseph River for PFAS and other contaminant analyses. Results are expected back in 2022.
  • On May 11 and 16, 2021, EGLE collected fish from Kent Lake and Proud Lake, respectively, of the Huron River for PFAS and other contaminant analyses. Results are expected back in 2022.
  • On May 18, 2021, sediment samples were collected from both Tims Lake and Grass Lake in Jackson to continue the source tracking investigation following the receipt of elevated fish tissue PFOS concentrations in Grass Lake. Five sediment samples collected from Grass Lake and three samples collected from Tims Lake had nondetectable concentrations of PFOS and PFOA. Other PFAS were detected in these samples but were below the laboratory reporting limit. Fish were collected from Tims Lake for PFAS and other contaminant analyses Results are expected back in 2022.
  • On May 19, 2021, the Keweenaw Bay Indian Community collected fish from the Falls River for EGLE for PFAS and other contaminant analyses. Results are expected back in 2022.
  • On May 20, 2021, EGLE collected fish from Saginaw Bay for PFAS and other contaminant analyses. Results are expected back in 2022.
  • On May 27, 2021, EGLE collected fish and surface water samples from Bush and Rice Lakes in Holly Township. PFOS and PFOA were non-detect in the surface water sample collected from Rice Lake. PFOS and PFOA were detected in Bush Lake at 1.1 and 2.4 ppt, respectively, which meet WQS. The fish results won't be back until 2022.
  • On May 29, 2021, EGLE collected fish from Bruin Lake in the Pinckney Recreation Area for PFAS and other contaminant analyses. Results won't be available until 2022.
  • On June 3, 2021, the United States Geological Survey (USGS) collected rainbow smelt from Lake Superior near Whitefish Bay and 14 mile point for EGLE. The fish will be analyzed for PFAS and other contaminants. Results are expected back in 2022.
  • Between June 10 and 17, 2021, EGLE collected fish from Wilcox Lake of the middle branch of the Rouge River, the lower branch of the Rouge River at Goudy Park, the upper branch of the Rouge River near 9-mile road in Southfield, and the Turning Basin of the Rouge River for PFAS and other contaminant analyses. Results are expected back in 2022.
  • On June 23, 2021, EGLE collected fish and a surface water sample from the Tippy Dam impoundment of the Manistee River for PFAS and other contaminant analyses. The surface water sample was collected from the Pine River where it meets the impoundment and had non-detectable PFOS and PFOA concentrations. The fish results won't be back until 2022.
  • On July 1, 2021, EGLE collected fish from Phoenix Lake of the middle branch of the Rouge River for PFAS and other contaminant analyses. Results won't be available until 2022.
  • On July 6, 2021, EGLE collected fish from Paw Paw Lake for PFAS and other contaminant analyses. Results are expected back in 2022.

Assorted surface water sampling locations

  • Between July 8-11, 2021, surface water samples were collected from the Keweenaw Peninsula region for PFAS analysis. Overall, 76% of the samples (56 of 73) had a nondetectable PFOS concentration and 79% (58 of 73) had a nondetectable PFOA concentration. Seven sampling locations exceeded the WQS for PFOS. Begunn Creek, west of Tamarack, had a PFOS concentration of 15.9 ppt. Quincy Creek near Calumet had a PFOS concentration of 30.4 ppt. The Little Carp River in Baraga township had a PFOS concentration of 42.3 ppt. Two unnamed tributaries to the Carp River near the former Marquette County Airport in Negaunee had PFOS concentrations of 16.1 and 21.8 ppt. Two samples collected from Silver Lead Creek near KI Sawyer had PFOS concentrations of 14.2 and 26.4 ppt. Fish were also collected from the Carp River downstream of a tributary that runs through the former Marquette County airport in Negaunee, Michigan. The fish results will not be available until 2022.
  • On July 20, 2021, EGLE collected fish from the Sadony Bayou of the Pierson Drain near Whitehall for PFAS and other contaminant analyses. Results are expected back in 2022.
  • On July 22, 2021, EGLE collected fish from Ox Creek (Benton Harbor), Carlton Creek (Rothbury), and the Grand River (near Jackson) for PFAS and other contaminant analysis. Results are expected back in 2022.
  • On July 23, 2021, a surface water sample was collected from Mitchell Creek downstream of the Cherry Capital Airport in Traverse City. Out of 29 PFAS analyzed, only three (PFBA, PFPeA, and PFHxA) were detected in the sample and all were less than 2 ppt.
  • On July 27, 2021, EGLE collected fish from the Huron River near Rockwood for PFAS and other contaminant analyses. Results are expected back in 2022.
  • On August 5, 2021, EGLE collected fish and surface water samples from the Johnson Drain near Northville for PFAS and other contaminant analyses. Surface water samples collected from the drain met WQS; however, a sample collected from a tributary to the drain just downstream of the Arbor Hills landfill had a PFOS concentration of 16.5 ppt which exceeds WQS. The fish results are expected back in 2022.
  • On August 10, 2021, EGLE collected fish from the Cass River downstream of Vassar for PFAS and other contaminant analyses. Results are expected back in 2022.
  • On August 18, 2021, the MDNR collected fish from Spring Brook near Parchment for PFAS and other contaminant analyses. Results are expected back in 2022.
  • On August 24, 2021, EGLE collected fish from Dukes and Kinross Lakes in Kinross Township for PFAS and other contaminant analyses. Fish results are expected back in 2022.
  • On August 25, 2021, EGLE collected fish from the Saline River downstream of Ford Lake in Milan for PFAS and other contaminant analyses. Results are expected back in 2022.
  • On August 26, 2021, EGLE's WRD collected surface water samples from the Saginaw River near Middleground Island and Bay City. These samples were collected as a follow-up to the 2019 sampling to determine if the significant rainfall prior to the 2019 sampling resulted in diluted PFAS concentrations in the surface water samples. None of the 13 samples that were collected exceeded the WQS for PFOS or PFOA. PFOS concentrations ranged from nondetect to 2.9 ppt. Data from fish collected from the Saginaw River in 2020 are expected back in 2022.
  • On August 27, 2021, EGLE's WRD collected a sample from the Reynolds Drain Pond downstream of the Capital Region Airport in Lansing. This sample was collected to determine if AFFF containing PFAS that was used to extinguish a plane crash fire resulted in additional PFAS contamination in the drain. PFOS in this sample exceeded the WQS at 45.4 ppt. This is within the range of concentrations that were observed during the 2019 sampling prior to the 2021 plane crash. Fish were collected from the Reynolds Drain Pond in 2020. Results are expected back in 2022.
  • On September 1, 2021, EGLE's WRD collected fish and a surface water sample from Simpson Lake near Oscoda, Michigan for PFAS analysis. PFOS and PFOA in the sample were non-detect. Fish results are expected back in 2022.
  • On September 3 and 4, 2021, EGLE collected fish from the Grand River near Harbor Island in Grand Haven and Riverside Park in Grand Rapids for PFAS and other contaminant analyses. Results are expected back in 2022.
  • On September 7, 2021, EGLE's WRD collected crayfish from the Rogue River downstream of the dam in Rockford for PFAS analysis of the tail meat. Results are expected back in 2022.
  • On September 14, 2021, EGLE collected fish from the Flat River downstream of Belding and the Thornapple River downstream of Hastings for PFAS and other contaminant analyses. Results are expected back in 2022.
  • On September 17, 2021, USGS collected rainbow smelt from Lake Michigan near Saugatuck for EGLE. The fish will be analyzed for PFAS and other contaminants. Results are expected back in 2022.
  • On September 26, 2021, the MDNR collected chinook salmon from the Little Manistee River weir for PFAS and other contaminant analyses. Results are expected back in 2022.
  • In fiscal year 2021, EGLE, WRD, collected 723 samples from Michigan surface waters and 947 fish samples for PFAS analysis.

​A collage of staff posing with fish they caught, which will be tested for pfas

Next Steps:

  • Assess whether data are available to calculate concentrations of additional PFAS in surface water that are protective of aquatic life and human health.
  • Conduct a POCIS study in the Saginaw River watershed to assist with the ongoing watershed PFAS source tracking investigation.
  • Receive and assess results from the 2021 Flint River POCIS study conducted to monitor PFAS trends in the Flint River watershed.
  • Collect surface water grab samples from the Pere Marquette-White and Saginaw River watersheds for PFAS analysis.
  • Complete the PFHxS/PFNA bioaccumulation study in Silver Lead Creek (near Gwinn) and Helmer Creek (near Battle Creek) in 2022.
  • Continue to collect fish from water bodies across the state for PFAS and legacy contaminant analyses.
  • Determine and prioritize fish and surface water sampling locations for 2022.
  • Continue to assess improvements and/or year-to-year differences in PFAS concentrations at several locations using a combination of fish collection, surface water grab sampling, and passive sampling techniques. 

Reports: 

  • A Water Resources Division staff report on a statewide survey conducted in 2012/2013 is available along with staff reports for the Clinton River, River Raisin, Kalamazoo River, St. Joseph River, and Huron River watersheds. The watershed staff reports are available via the MPART Watershed Investigations Web page.
  • EGLE, WRD's, contractor, Great Lakes Environmental Center, has drafted a report summarizing the Au Sable River - Lake Huron PFAS plume study. This report will soon be posted to the MPART Au Sable River watershed Web page.
  • An EGLE, WRD, staff report summarizing the results of the POCIS study conducted in the Huron River watershed is available on the MPART Huron River Investigation Web page.
  • An August 2019 sampling update for the Grand River watershed is available on the MPART Grand River watershed Web page.
  • A September 2019 sampling update for the River Raisin watershed is available on the MPART River Raisin watershed Web page.
  • An October 2019 sampling update for the Saginaw River watershed is available on the MPART Saginaw River watershed Web page.
  • An August 2020 sampling update for the Kalamazoo River watershed for sampling conducted in Portage Creek will soon be posted to the MPART Kalamazoo River watershed Web page.
  • A September 2020 sampling update to the Huron River watershed report is available on the MPART Huron River watershed Web page.
  • A November 2020 sampling update to the Huron River watershed report for sampling conducted in the Regan Drain will soon be posted to the MPART Huron River watershed Web page.
  • On November 21, 2020, EGLE received PFAS results for the fish that were collected from the Huron River watershed, including Washago Pond. In the mainstem of the Huron River, PFOS concentrations in the fish fillets were lower than in 2017 and 2018 and similar to concentrations observed in 2019. The MDHHS is reviewing the new data to determine if any change to the existing Do Not Eat fish advisory is warranted. Pumpkinseed collected from Washago Pond had elevated PFOS concentrations ranging from non-detect to 110 parts per billion.
  • On November 25, 2020, EGLE collected additional samples further upstream in the Regan Drain of the Huron River watershed. Elevated surface water PFOS concentrations exceeding WQS were observed in the Regan south of South Huron Road.
  • A December 2020 sampling update to the Huron River watershed report for sampling conducted in the Regan Drain will soon be posted to the MPART Huron River watershed Web page.
  • A September 2021 sampling update for the Rouge River watershed will soon be posted to the MPART Rouge River watershed Web page.
  • A September 2021 sampling update for the watersheds in the Keweenaw Peninsula Region will soon be posted to the MPART watershed Web page.

Research/Studies:

  • Assess toxicity of PFAS-contaminated sediments to aquatic benthic macroinvertebrates.
  • Assess potential for PFAS‑contaminated sediments to act as a source of PFAS to the aquatic food web and sustain elevated fish tissue PFOS concentrations.
  • Determine whether passive samplers can be used to assess trends in surface water PFAS concentrations and whether POCIS are good predictors of PFAS contamination in the aquatic food web. Water quality samplers are placed in surface waters for four weeks to allow contaminants in the water to accumulate onto the sampling device. 

a collage of staff posing with a cage used in caged fish studies

  • Determine how often fish samples should be analyzed for PFAS to assess improvements of ongoing remediation efforts and if POCIS can be used to meet this goal.
  • Determine the potential for other PFAS to build up in fish tissues.
  • Continue monitoring PFAS intensively in selected watersheds and at randomly selected locations statewide.
  • Commissioned a foam study in 2019 to develop surface water foam sampling techniques and guidance document, compare surface water and foam sampling results from select surface waters, and develop a conceptual site model for the generation of foam on surface waters. Results of the study can be found here.

EGLE staff collecting samples at assorted locations along water bodies

Historical Timeline:

  • In 2019, 640 surface water samples were collected for PFAS analysis.
  • Developed approach for citizens and EGLE staff to report foam complaints electronically (MiWaters Spill/Incident/Pollution form) to help guide future monitoring decisions.
  • Determined the distribution and concentration of PFAS in lake ice collected from Van Etten Lake in 2019 and 2020 after citizen complaints. 
  • On March 19, 2020, EGLE received results from eight surface water samples collected from the Pigeon River watershed as a part of the former White Pigeon Paper Company investigation. The sampling was conducted on March 9, 2020.
  • On April 1, 2020, EGLE received results from a pilot POCIS study conducted in the Huron River watershed. The samplers were deployed in the Huron River for 28 days between September 26 and October 24, 2019.
  • On July 21, 2020, 18 surface water samples were collected in the Portage Creek area of Kalamazoo. No samples exceeded the WQS for PFOS or PFOA.
  • On August 3 and 4, 2020, 27 surface water samples were collected in the Huron River watershed. Samples collected from Norton Creek, Willow Run, and Washago Pond exceeded the WQS for PFOS. PFOS concentrations in Norton Creek have continued to decline since July 2018 when it was measured at 5,600 ppt. Source tracking continues in Willow Run and the Washago Pond area.
  • On August 11, 2020, 41 surface water samples were collected from the Ecorse River and Frank & Poet Drain watersheds. Several samples from both watersheds exceeded the WQS for PFOS. Future investigations to track the source(s) of contamination are being planned.
  • On August 20, 2020, surface water samples were collected from drains in the Ft. Gratiot/St. Clair County PFAS Area of Investigation. Seven of the 21 samples collected had PFOS concentrations exceeding the WQS and ranged from 18 to 247 ppt. Further investigations are being planned to determine the source(s) of contamination.
  • On August 25, 2020, four surface water samples were collected from Regan Drain and the Huron River near Washago Pond in the Willow Metropark to confirm initial results from the August 3, 2020 sampling event. Results confirmed that PFOS contamination exists in the Regan Drain upstream of Washago Pond. Future investigations to track the source(s) of contamination were planned.
  • On August 27, 2020, surface water and sediment samples were collected from Little Black Creek and the Mona Lake watershed for PFAS analysis. Surface water samples collected from Mona Lake ranged from 2.3 to 14.7 ppt PFOS with the highest concentration exceeding the PFOS WQS. In Little Black Creek, six of the ten surface water samples exceeded the WQS for PFOS and ranged from 13.0 to 37.6 ppt PFOS.
  • On September 3, 2020, surface water samples were collected from the Bear River near Petoskey for PFAS analysis. PFOS was nondetect at all seven sampling locations in the Bear River watershed.
  • On September 3, 2020, surface water samples were collected from the Burt Lake watershed near Pellston. PFOS was nondetect in 11 of the 14 samples collected from the Burt Lake watershed and less than 2 ppt in the other three samples. Fish were also collected from the west branch of the Maple River for PFAS analysis. The results for the fish analysis  are expected back in 2022.

Timeline of Accomplishments:

  • 2011:  Derived human health/aquatic life surface water quality values for PFOA.
  • 2012/2013:  Conducted initial statewide PFAS reconnaissance survey.
  • 2014:  Derived human health/aquatic life surface water quality values for PFOS.
  • 2016:  Conducted an initial survey of PFAS in the Flint River watershed.
  • 2017:  PFAS monitoring continued in the Flint watershed, began in the Clinton River watershed, and additional sampling was conducted in 6 other watersheds.
  • 2018:  Intensive PFAS monitoring surveys were conducted in the River Raisin, Huron River, Kalamazoo River, Rogue River, and St. Joseph River watersheds, and additional sampling was conducted in 6 other watersheds.
  • 2019:  Intensive PFAS monitoring surveys were conducted in the Black (St. Clair County), Saginaw, Grand, and Thornapple Rivers watersheds, and additional sampling was conducted in 18 other watersheds. Statewide monitoring of PFAS concentrations at randomly selected locations began.
  • 2020:  PFAS monitoring surveys conducted in the Pigeon River, Shiwassee River, Mona Lake, Ecorse River, Frank and Poet Drain, Bear River (Pellston), Huron River, Portage Creek (Kalamazoo), and the Burt Lake watersheds. POCIS study was conducted in the Huron River.
  • 2021:  PFAS monitoring conducted in the several watersheds: Keweenaw Waterway, Clinton, Shiawassee, Saginaw, Black (Gogebic County), Grand, Munuscong, Paw Paw, Macatawa, Rouge, Escanaba, Flint, Salmon-Trout, Sturgeon, Misery, Chocolay, and Tobacco Rivers. POCIS study was conducted in the Flint River.

Workgroup Lead Name and E-Mail:

Michael Alexander
AlexanderM2@Michigan.gov