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Village Blue

Real-Time Water Quality Monitoring to Help Communities Better Understand Local Water Quality

EPA and the U.S. Geological Survey (USGS) initiated the Village Blue project to demonstrate the use of water quality sensors to increase community awareness about local water quality. In 2017, the first Village Blue location was developed in the Baltimore Harbor. The project was conducted from 2017-2019 to provide real-time water quality monitoring data to the Baltimore community and complemented work already being done toward the Waterfront Partnership of Baltimore's goal of making the Harbor swimmable and fishable by 2020.

Since the initial Village Blue Baltimore location, a new Village Blue site has been developed in New Orleans to help communities better understand Lake Pontchartrain's water quality and its connection to the Mississippi River.

Village Blue builds on EPA’s Village Green project, which provided real-time air quality information to communities in eight locations across the country.

How does this project benefit communities?village blue lake pontchartrain lighthouse

Village Blue’s monitoring data helps close water quality information gaps, giving citizens and professional scientists more data to inform communities, policies, and environmental restoration efforts.

Water quality monitoring data can help communities take action to keep local watersheds healthy. Watersheds—the land areas that drain into streams, lakes, and rivers—directly impact the health of the water bodies and communities they surround. 

Learn more about the benefits of healthy watersheds.

Village Blue – Lake Pontchartrain

New Orleans, Louisiana

village blue lake pontchartrain lighthouseVillage Blue's new sensor deployment site on the south shore of Lake Pontchartrain. Photo: Lake Pontchartrain Basin Foundation

Station Location: New Canal Lighthouse, 8001 Lakeshore Dr, New Orleans, LA
Installation: February 2021

EPA and USGS installed water sensors at a site near the New Canal Lighthouse on the south shore of Lake Pontchartrain in February 2021. The sensors will record measurements of select water quality parameters every hour.

Although water sensor data from the new site are not representative of the entire lake’s water quality, data from this site and an existing USGS site on the Mississippi River in Baton Rouge could be combined, allowing river and lake conditions to be evaluated under normal conditions on the river, and when river and lake waters come together during openings of the Bonnet Carré Spillway. The spillway is a feature of the U.S. Army Corps of Engineers’ Mississippi River and Tributaries Project that diverts floodwaters from the Mississippi River through Lake Pontchartrain into the Gulf of Mexico.

Village Blue - Lake Pontchartrain measurements:

  • Algae
  • Chlorophyll
  • Turbidity
  • Dissolved Oxygen
  • Nitrate
  • Temperature
  • pH

Village Blue Lake Pontchartrain will build on the accomplishments of the Baltimore station to provide the following:

Real-time water quality information about nutrients and potential algal blooms will help users develop a greater understanding of water quality issues, such as the ways that heavy rainfall can contribute to changes in nitrate, turbidity, and dissolved oxygen levels in water bodies.

Village Blue Lake Pontchartrain Partners:

The Village Blue Lake Pontchartrain partners presently include EPA’s Office of Research & Development (ORD)EPA Region 6EPA Gulf of Mexico Division, USGS and the U.S. Army Corps of Engineers (USACE). Village Blue Lake Pontchartrain was funded through EPA’s Regional Applied Research Effort (RARE) Program with additional support from EPA’s Region 4 Gulf of Mexico Division.

EPA and USGS are looking for additional community and academic partners interested in water quality, water quality sensors, ecological and human health, and communication of water quality information. The project may also provide opportunities for additional research efforts.

  • U.S. Geological Survey (USGS)
    USGS is collaborating with EPA to establish, operate, and maintain a new water-quality monitoring station on the south shore of Lake Pontchartrain that will feature a comprehensive water-quality sensor system following USGS quality assurance procedures.
  • Pontchartrain Conservancy Exit
    Pontchartrain Conservancy works to drive environmental sustainability and stewardship through scientific research, education, and advocacy. As an organization that has led water quality sampling efforts in the Lake Pontchartrain estuary since 2001, Pontchartrain Conservancy will use Village Blue Lake Pontchartrain to engage the public in preserving the estuary for this and future generations.
  • U.S. Army Corps of Engineers (USACE)
    USACE is working with Pontchartrain Conservancy to monitor for algal blooms at beaches along Lake Pontchartrain. USACE and Pontchartrain Conservancy will collect water quality measurements to provide an immediate indication of the severity of any algal bloom that may be occurring. The main objective of monitoring is to help ensure beaches are safe for public use.

Real-time Village Blue Lake Pontchartrain data can be viewed on USGS's National Water Information System (NWIS) website:

USGS also offers a redesigned version of NWIS (NWIS Next Generation) that uses the latest web technology and usability techniques to display the same water quality data in an updated format. Learn more about accessing NWIS Next Generation.

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Village Blue – Baltimore Harbor

Baltimore, Maryland

A USGS staff member reads data collected by the Village Blue Baltimore water quality sensorsA USGS staff member reads data collected by the Village Blue Baltimore water quality sensors.

Station Location: Jones Falls River, 370 ft. downstream of Eastern Ave., Baltimore, MD
Installation: September 2017
Decommissioned: December 2019

From 2017-2019, Village Blue Baltimore provided real-time water quality monitoring data to the Baltimore community and complemented work already being done toward the Waterfront Partnership of Baltimore's goal of making Baltimore Harbor swimmable and fishable by 2020.

To monitor water quality in the Jones Falls River and Inner Baltimore Harbor, data were collected in real-time by sensors located underwater between the Eastern Avenue Bridge and the Waterfront Partnership of Baltimore’s Mr. Trash Wheel. Multiple water sensors were connected to probes that recorded measurements of selected water quality parameters every five minutes.

Example of a Village Blue water quality sensor, which uses multiple probes to measure indicators of water quality.Example of a Village Blue water quality sensor, which uses multiple probes to measure indicators of water quality.

Village Blue Baltimore measurements:

  • Precipitation (Data from a separate U.S. National Weather Service location)
  • Gage Height
  • Stream Velocity
  • Turbidity
  • Salinity
  • Dissolved Oxygen
  • Nitrate
  • Temperature

Village Blue Baltimore data can be viewed on USGS's National Water Information System (NWIS) website:

Village Blue Baltimore NWIS Data—Real-time data is no longer being streamed from the Baltimore location, but historical data can still be accessed via NWIS.

village blue baltimore locationVillage Blue’s water quality sensor station was located on the Jones Falls River where it enters Baltimore Harbor.

In Baltimore, Village Blue accomplished the following:

  • Provided important water quality information from the Jones Falls to help determine the impact of this important source on the Baltimore Harbor.
  • Supported the development of new water quality sensors by conducting a demonstration and test implementation.
  • Increased public awareness of water quality and ecosystem health through integration and visualization of real-time water quality data.
  • Produced an open source Village Blue data integration and visualization framework and how-to manual, which can be used locally and by other communities wanting to develop their own Village Blue stations.

Village Blue Baltimore Partners:

The following links exit the site EXIT

  • Blue Water Baltimore
    Blue Water Baltimore operates a large network of non-real-time monitoring sites in Baltimore. Blue Water Baltimore contributed to Village Blue’s data visualization and providing data to help scientists understand the Jones Falls River measurements.
  • City of Baltimore
    The City of Baltimore has a network of non-real-time water quality monitors and contributed to the data visualization and communication of the water quality data. View City of Baltimore’s water quality data
  • Maryland Department of Natural Resources (DNR)
    The Maryland DNR has an extensive network of real-time and non-real-time water quality monitors and contributed to Village Blue’s data visualization. Maryland water quality data and related information can found through the Eyes on the Bay website.
  • Maryland Science Center 
    The Maryland Science Center interprets and distills the latest in scientific discovery for the public. They assisted in developing hands-on water sensor education opportunities.
  • National Aquarium 
    The National Aquarium opened in 1981 on Baltimore’s Inner Harbor and features educational displays on aquatic life in the Chesapeake Bay. The aquarium contributed to Village Blue’s website content and data visualization, which included real-time data collected near ships in the inner harbor. The aquarium also helped develop approaches to share Village Blue’s water quality information with the community.
  • U.S. Geological Survey (USGS)
    USGS provided operation and maintenance of Village Blue’s water sensors, data quality assurance, and access to water quality data through its water services program. USGS will also be contributing to Village Blue’s data visualization and sensor evaluation.
  • Waterfront Partnership of Baltimore 
    The Waterfront Partnership manages a Healthy Harbor Plan that focuses on reducing bacteria, stormwater runoff, and trash in the Baltimore Harbor. The Partnership installed the Baltimore Inner Harbor Water Wheel (Mr. Trash Wheel)

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Contact Us

Technical questions or additional information on Village Blue: Contact the Village Blue Team

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