Overview
The city’s water system brings clean water to your home and takes dirty water away. We take care of three kinds of water:
Drinking Water
This is cleaned and tested to make sure it’s safe.
Wastewater
This comes from sinks, toilets, and showers. The city cleans it before putting it back into nature.
Stormwater
This is rain or melted snow that flows off streets. The city manages it so it doesn’t cause floods or pollution.
Drinking Water
The city works hard to make sure your drinking water is safe and clean. Here’s what you need to know:
About Your Drinking Water
Monthly Water Quality Testing
Per- and Polyfluoroalkyl Substances (PFAS) and Your Drinking Water
Annual Water Quality Report
Responsible Boating on Baltimore’s Reservoirs
Total Trihalomethanes (TTHMs) and Your Drinking Water
Header Text: Total Trihalomethanes (TTHMs) are byproducts that can form when chlorine used to disinfect drinking water reacts with naturally occurring organic matter. Learn how TTHMs form and how DPW monitors and manages them to protect drinking water quality.
Water Project History
The City of Baltimore supplies drinking water to 1.8 million people in the Baltimore Metropolitan Area and maintains 3,800 miles of water mains, 67,500 valves and 23,000 fire hydrants. Take a look at our past and current water projects.
View Projects
Wastewater
Wastewater is the water that leaves our homes and businesses, and it must be carefully treated to protect public health and the environment. Learn how the city manages wastewater, from collection and treatment to the facilities and efforts that keep our water clean.
Learn How We Manage Wastewater
Stormwater
Want to know how we’re keeping Baltimore’s waterways clean? Learn about the steps we are taking to reduce flooding, add green spaces, and fix up local streams and the Harbor.
How We Manage StormwaterBaltimore’s Water System and Services
Baltimore’s water system is old, with many of our water pipes (called mains) being over 100 years old. While age doesn’t always mean the pipes are bad, some need to be replaced or fixed to keep the water flowing properly.