July : 2022 - CHICAGO
H2NOW & The Award Winning, Proteus Multiparameter Sensors,
are monitoring in the Chicago River in real-time,
now back for Summer 2022!
H2NOW reports on water quality from 3 locations every 15 minutes
The platform is providing a guide to water quality by estimating faecal coliform levels every 15 minutes from three spots along the river, through an array of novel technologies. The resource is available at H2NOWChicagoIn addition to upgraded technology, new this year is a QR code that allows residents and river users to get to the platform immediately to check water quality. The code will be displayed on promotional materials and on signage along the river.
H2NOW, first launched in September 2021, reports on the river like a meteorologist reports on the weather, providing real-time information for kayakers, walkers, diners and other residents and visitors who want to know about the health of the Chicago River. Current, the Chicago-based catalyst for better, cleaner water, is leading H2NOW operations with the support of more than 20 partners. The system relies on innovative technologies that have not been previously deployed in an urban river, and helps connect residents to their environment.
Proteus sensors have been installed in three locations and collect a series of measurements to estimate faecal coliform levels. Data are transmitted and displayed on the H2NOW portal. “Everyone who lives near or uses the Chicago River has a stake in its health and safety,” said Alaina Harkness, executive director of Current. “The more information we have about water quality, the more we can each do our part to keep this tremendous resource healthy. ”Since last fall, Current has upgraded its approach to translating sensor data into real-time water quality assessments using the best available science, and has redesigned the online gauges to deliver information to visitors and residents in a more usable and readable way.
Sensor equipment was removed last winter and reinstalled in May with additional features that enable H2NOW to provide an even better prediction of bacterial levels. Proteus sensors are now collecting data on coloured dissolved organic matter, or CDOM, as well as specific conductivity. Those readings are combined with measures of tryptophan-like fluorescence [TLF], temperature, and turbidity to provide an overall quality estimate.
On the newly designed display gauges, water quality is considered “Good” or safe for contact if estimated faecal coliform levels are below 200 CFU/100mL. If faecal coliform estimates range between 200 and 1000 CFU/100 mL, gauges display a “Low Caution” reading. Above 1000 CFU/100 mL, a “High Caution” warning is displayed. The “Good” threshold is based on the Illinois Environmental Protection Agency’s Primary Contact Use standard value, indicating that one is unlikely to get sick if river water is ingested.
Building and launching H2NOW was the result of collaboration among more than 20 partners, including the Metropolitan Water Reclamation District of Greater Chicago, which protects and monitors waterways and oversees wastewater treatment and storm water management for Chicago and 128 suburbs, and the City of Chicago’s Department of Water Management, which is responsible for delivering drinking water to the city and 125 suburbs and collecting wastewater and storm water through local sewers for transport to MWRD’s treatment facilities.
“The Chicago River connects our communities,” said MWRD Board of Commissioners President Kari K. Steele. “H2NOW helps us make informed decisions about how we interact with the river.” “The Chicago Department of Water Management was proud to be a founding member of Current to help identify and implement innovative technologies, which are improving every year,” said Dr. Andrea Cheng, Commissioner of the Department of Water Management. “H2NOW is a terrific example of how technology can connect residents to their environment.”
Faecal matter pollutes the Chicago River in two main ways. First, rainwater that falls over 1,834 square miles from Wisconsin to Indiana drains into the Chicago River, carrying, among other things, droppings from birds and other animals. Second, heavy rains can occasionally overwhelm local sewer systems. These events can cause harmful combined sewer overflow [CSOs] into the Chicago River. These events are reported by the MWRD and other advocacy groups. H2NOW augments the CSO alert system by providing more detailed information about river water quality.
