https://www.h2nowchicago.org/home daily 1.0 2026-07-01 https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/6bec7f2b-7b85-49d8-8356-afe3b67b183e/Screenshot+2025-04-23+at+3.45.59%E2%80%AFPM.png https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/45d6c8ac-028e-439e-9cc7-f7ef04a24393/Screenshot+2025-04-23+at+3.46.05%E2%80%AFPM.png https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/4a848dab-76aa-4c84-bdb9-2ecd25bcbb47/Screenshot+2025-04-23+at+3.46.10%E2%80%AFPM.png https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/1bf1c4bb-6250-4d5b-82d1-1530a5c2ff3c/Screenshot+2025-04-23+at+3.46.15%E2%80%AFPM.png https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/1626748427274-6LDSTORT8RP4CDKOSW3J/chicago-river-h2now-chicago.jpg Home - How Clean is the Water, Really? Many assume Chicago’s rivers are always dirty — or always safe. The reality is somewhere in between, and conditions are constantly changing. That’s where H2NOW comes in. Like a weather app for the river, it delivers real-time water quality data to help you decide when to be on or near the water. After decades of investment and advocacy, our rivers are the cleanest they’ve been in generations. Tools like H2NOW help keep it that way. https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/5880d118-f183-4132-b02c-79966676070e/IMG_0923+%282%29.jpg Home - An Innovative Partnership This massive urban science project was built with the cooperation of dozens of partners, including our utilities, technology providers, advocacy and community groups, and philanthropic funders. Through the partnership of several organizations, H2NOW Chicago launched in September 2021 as the first real-time water quality monitoring project in the U.S. to measure microbial pollutants in an urban waterway. https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/0cbab083-fb71-4c29-8f26-716f2dfaa406/H2NOW+River+Swim+-+2025 Home - Data-Backed River Recreation After the first open-water swim in the Chicago River in nearly a century in 2025, the City of Chicago recently announced the return of the second annual Chicago River Swim on September 20th, 2026! To ensure swimmer safety, organizers have developed a strong water quality and safety plan. H2NOW Chicago is proud to support the Chicago River Swim with our real-time water quality data, alongside the Metropolitan Water Reclamation District and University of Illinois Chicago. H2NOW is one of several validation tools helping assess river conditions leading up to the swim. https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/1536c755-4ea1-4501-8216-6488e51dd82f/arrows3.png Home - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://www.h2nowchicago.org/recreation daily 0.75 2026-07-01 https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/1626989823122-AULGYLRIXQWKPSBO10PR/h2now-chicago-river-recreation.jpg Recreation - The Chicago Area Waterway System (CAWS) offers many recreation, leisure, and business opportunities for Chicagoans and visitors all year round. These opportunities include boating, dining, kayaking, fishing, and more. We hope you use the real-time river water quality data from H2NOW to make more informed decisions about how and when to interact with the CAWS. Explore the interactive maps below to discover recreational activities throughout the CAWSr. You can also learn about more ways to engage with Chicago’s rivers at Chicago Water Fun as well as at Openlands. https://www.h2nowchicago.org/partners daily 0.75 2026-06-26 https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/1626904368548-V8VBVB6932EF14ACU8GS/leadership.png Partners - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/1626904396897-17L0L28J1BZTT00UHTW3/sensing+and+testing.png Partners - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/1626904581265-SZG3UHSZ4G2ETHVB2PK1/funding.png Partners - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/1626904468797-IIE3KXIHGQ1RMHL2LVB7/utilities.png Partners - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/1626904507744-RFAD8C7HQGFB8UX83M5W/research.png Partners - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/1626904544315-B48ESJG7YZQC7NI2N234/community+partners.png Partners - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/1626904426549-QPNZVKRWMMVQ43VDS5Z0/technologies.png Partners - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/1626825004972-QJQ7QM0DSYZJ570DN15Q/waves+for+h2now.png Partners - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://www.h2nowchicago.org/technologies daily 0.75 2026-07-01 https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/6353f33e-f261-40b1-a2b7-ca7a9bbace0d/lume-sensor-virridy.jpg https://www.h2nowchicago.org/understanding-data daily 0.75 2026-07-01 https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/4c4fac30-f5f5-4b74-803f-f727f4c5524b/plot_1-annotated-01.png Understanding Data - Make it stand out Plot 1 TLF readings at all three branches of the Chicago River (July 2021, NB - North Branch, SB - South Branch, MS - Main Stem) https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/aed5ffa3-75ea-41ba-b079-3d075979f093/plot_2-annotated-01.png Understanding Data - Make it stand out Plot 2. TLF data from the North Branch of the Chicago River (May-June 2021) https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/1e659f25-b0e5-4cab-ab0f-3f6bbd0b7007/plot_3-annotated-01.png Understanding Data - Make it stand out Plot 3: TLF readings and fecal coliform test results on the North Branch (May-June 2021) https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/0d0df23f-f496-44b7-9b74-da90718348da/plot_4-annotated-01.png Understanding Data - Make it stand out Plot 4: TLF, turbidity and temperature readings after a combined sewer overflow event on June 26, 2021, on the North Branch https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/3ef87001-fb00-43da-8ee7-9e83f6f08068/plot_5-annotated-01.png Understanding Data - Make it stand out Plot 5: How sensors responded to the increased flow from Lake Michigan on May 6, 2021 https://www.h2nowchicago.org/faq daily 0.75 2026-07-01 https://www.h2nowchicago.org/contact daily 0.75 2024-10-31 https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/1626825004972-QJQ7QM0DSYZJ570DN15Q/waves+for+h2now.png Contact - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://www.h2nowchicago.org/disclaimers daily 0.75 2024-11-05 https://www.h2nowchicago.org/calumet-river daily 0.75 2025-05-20 https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/9acbc5ba-d1ae-4201-98ce-3a68f18b9769/CR+Map.jpg https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/b81a728e-3ffe-424e-a9b3-82098dbc25cc/Ewing+Ave+bridge.jpg https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/cb43a7ae-d2bd-42d8-be9b-d5e83e175b08/Steel+mill+at+Gary+Works.jpg https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/0cde90f9-725f-4be4-9d67-addc503964e0/Dead+fish.jpg https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/80cae92b-3a32-4e86-ae9e-a98e2fc7a5cc/Recreation.jpg https://www.h2nowchicago.org/data-readings daily 0.75 2026-07-01 https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/b2a3f093-27ad-445c-a14e-492a8bbacb79/Screenshot+2025-04-23+at+3.46.55%E2%80%AFPM.png https://www.h2nowchicago.org/water-quality-historic-data daily 0.75 2026-07-01 https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/65a8e2e1-e93f-46f1-80cd-a91945d7846a/river.jpg https://www.h2nowchicago.org/historic-data-terms-and-conditions daily 0.75 2025-11-04 https://www.h2nowchicago.org/partners-2 daily 0.75 2026-06-18 https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/7c0b43de-b5e6-42c8-9c8d-233cc7097bc7/2.jpg https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/1a593d23-5562-4839-9e43-088452102f74/5.jpg https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/c0fcf217-e099-4e2b-8140-44e882d7128a/4.jpg https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/0408991b-8f7e-4052-873f-e61360cd7ea4/4.jpg https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/aa97620f-ad38-473f-9c33-35fe37619e74/7.jpg https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/3661fb37-602f-4bc7-a6ac-0af9d246876e/3.jpg https://www.h2nowchicago.org/technologies-content daily 0.75 2025-11-21 https://www.h2nowchicago.org/technologies-content/sensor-data-flow monthly 0.5 2021-07-22 https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/afdeb322-6377-4143-9a1a-0b18f99629cf/image.png Technologies Content - Sensor Data Flow - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://www.h2nowchicago.org/technologies-content/rs-hydro-bd1 monthly 0.5 2025-11-21 https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/9cda7250-6955-45e1-badf-42442d66be95/RS+Hydro+BD1+Portable+2.jpg Technologies Content - RS Hydro BD1 - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://www.h2nowchicago.org/technologies-content/proteus-probes monthly 0.5 2025-11-21 https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/1626907566031-PWXNY908DM5FNGS7EWZF/Proteus+installation.jpg Technologies Content - Proteus Probes - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/60f6302e0660f37f32f45055/1626907586782-WSUD6JQOLVB5LP3JSNF0/Proteus+Sensor.png Technologies Content - Proteus Probes - Make it stand out Whatever it is, the way you tell your story online can make all the difference.