E. coli Data

Bi-Weekly E. coli Report

E. coli data is updated weekly by the Lilly Center’s research team. We sample 14 streams every other week, all year round, and 7 beaches during the summer. You can learn more about E. coli by visiting these educational resources:

Weekly Results: Streams

The EPA’s safety threshold is 235 CFU/100 mL

ND – None Detected

– – –  Data unavailable for this sampling week 

Testing SiteDate Last SampledCFU/100 mL
Winona Lake Inflow: Peterson Ditch10/1/2026365.4
Winona Lake Inflow: Keefer-Evans10/1/2026579.4
Winona Lake Inflow: Cherry Creek10/1/20261,119.9
Winona Lake Outflow: Eagle Creek10/1/20267.5
Pike Lake Inflow: Deeds Creek10/1/2026235.9
Pike Lake Outflow: Lones Ditch10/1/202625.9
Tippy Chain Inflow: Grassy Creek10/6/202675.4
Tippy Chain Inflow: Tippecanoe River10/6/20261.0
Tippy Chain Outflow: Tippecanoe River10/6/20261.0
Wawasee-Syracuse Inflow: Papakeechie10/7/20262.0
Wawasee-Syracuse Inflow: Turkey Creek10/7/2026106.7
Wawsee-Syracuse: Inflow: Dillon Creek10/7/2026579.4
Wawsee-Syracuse Inflow: Launer's Creek10/7/202673.3
Wawasee-Syracuse Outflow: Turkey Creek10/7/20263.0

Weekly Results: Beaches

The EPA’s safety threshold is 235 CFU/100 mL

ND – None Detected

– – –  Data unavailable for this sampling week 

Testing SiteDate Last SampledCFU/100 mL
Winona Lake Beach9/2/202664.4
Center Lake Beach9/2/202658.3
Pike Lake Beach9/2/2026218.7
Webster Lake Beach9/2/20268.6
Waubee Lake Beach9/2/20260
Syracuse Lakeside Beach9/2/20266.3
Syracuse Hoy Beach9/2/20265.2

How does the Lilly Center test for E. coli?

The field research team collects water samples in sterile jars from streams and beaches. They use a gloved hand and a pole to collect the sample from upstream of where they are standing to avoid contamination from other sources. These samples are kept in a cooler to prevent the quantity of E. coli from changing while it is transported back to the Lilly Center’s research lab.

Matt Burlingame

Matt Burlingame

Assistant Director of Research

burlinmn@grace.edu 574-372-5287

Bio

Full data reports are available by contacting the Lilly Center’s assistant director of research, Matt Burlingame.