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 Ditch8/7/20262,419.6
Winona Lake Inflow: Keefer-Evans8/7/2026579.4
Winona Lake Inflow: Cherry Creek8/7/20261,413.6
Winona Lake Outflow: Eagle Creek8/7/202638.4
Pike Lake Inflow: Deeds Creek8/7/2026195.6
Pike Lake Outflow: Lones Ditch8/7/202646,2
Tippy Chain Inflow: Grassy Creek7/30/202610.6
Tippy Chain Inflow: Tippecanoe River7/30/202675.4
Tippy Chain Outflow: Tippecanoe River7/30/202612.1
Wawasee-Syracuse Inflow: Papakeechie7/30/2026115.3
Wawasee-Syracuse Inflow: Turkey Creek7/30/202699.0
Wawsee-Syracuse: Inflow: Dillon Creek7/30/20261,203.3
Wawsee-Syracuse Inflow: Launer's Creek7/30/2026261.3
Wawasee-Syracuse Outflow: Turkey Creek7/30/202658.3

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 Beach8/12/2026648.8
Center Lake Beach8/5/202612.2
Pike Lake Beach8/12/202632.7
Webster Lake Beach8/5/202617.5
Waubee Lake Beach8/5/20263.0
Syracuse Lakeside Beach8/5/20268.6
Syracuse Hoy Beach8/5/20261.0

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.