📜 Wastewater treatment plant on Jones Island, Milwaukee, designated a National Historic Civil Engineering Landmark and listed on the National Register of Historic Places. 🔍 Produces Milorganite fertilizer from treated wastewater. # Why Go 🔬 Learn about the innovative wastewater treatment process and pioneering water reclamation 🏭 See how Milorganite fertilizer is produced 🚶 Take guided in-person or virtual tours, suitable for all ages 🎁 Receive a complimentary bag of Milorganite # Why Avoid ⚠️ Be prepared for a pervasive smell, especially on windy days 🚫 Hard hat tours require closed-toe shoes, long pants, and descending 75 steps # Tips 👟 Wear closed-toe shoes and long pants for in-person tours 🗓️ Pre-register for tours, walk-ups not allowed, especially for Doors Open Milwaukee 👷 Hard hats and safety glasses are provided for certain tours 👃 Be prepared for a unique smell # Cost 💰 Tours are free, pre-registration required. # Hours 🕒 Tours available on specific dates, check MMSD website for schedule.