RAIN administers an early warning/spill detection network for our drinking water treatment plants

Early Warning Systems (EWS) protect water supplies at the source. As we cross our rivers, sometimes many times in a day, how often do we consider the potential hazards placed on those rivers? The members of RAIN are very familiar with these potential hazards as it is their job to safeguard the drinking water for the thousands/millions of people they serve; and RAIN provides needed alerts and notifications to our drinking water treatment plants.

Drinking water is the biggest reason for the Early Warning System used by the RAIN members. How can it help you?

Safeguarding Your Drinking Water

The RAIN basin provides the source water for nearly 2 million people’s drinking water. These vast rivers also provide the means for the region’s industrial and manufacturing strength, as well creating the nation’s largest inland port. At times, all this commercial activity taking place on or near our rivers poses a threat to the quality of these rivers.

RAIN provides water quality data at various points throughout the Ohio River Basin.  Using various HACH monitoring sensors RAIN gathers data in near real-time at these locations.

How can this data help? 

  • Alerts and notifications are provided to affected drinking water treatment plants whenever a parameter is out of range.
  • The data can be used to acquire background levels at certain spots in the river
  • People recreating on or around our rivers should be curious about the water quality in their area.
  • We are all understandably curious about the quality of the source water from whence our drinking water comes… Find Your Source.


RAIN collects water quality data using the HACH source water panel (shown right). RAIN currently monitors pH, conductivity, temperature, turbidity, and dissolved oxygen, though this panel can support many other parameters. Data is collected at fifteen minute intervals and many of our monitoring sites are connected to have data pushed to the interactive map where users can see it in real-time. 

This information is collected as an early warning system. The HACH and Welbeck equipment allows for an ease of transferring information from the source water panel to the interactive map and the people behind the scenes treating our drinking water for every day use. If a parameter gets an irregular reading, the water treatment facilities are alerted so that the can take preventative measures. 

HACH source water panel 

HACH source water panel 


See the data in action

Our interactive map uniquely represents how and where RAIN monitors the rivers from which most of the region’s drinking water is taken. It allows you to see the water data collected, and helps inform you of general water quality data you need to know about the water resources used by public drinking water systems.

Current river data displayed for pH, conductivity, temperature and other parameters is collected from various sites along the Allegheny, Monongahela, Ohio, Youghiogheny, Shenango, and Beaver rivers. The Current River Data displayed here is provided to make it easier for you to get current river information in near real-time from one central location. As such, please be aware that the data presented on this public interactive map for the RAIN sites is provisional, and is being supplied as it is collected for educational use.

In addition, the map also provides overlay tools (Watersheds, Rivers, USGS sites, etc) that help put into context the data provided at each of the RAIN monitoring locations. Many of the overlays provide additional links to pertinent sites maintained by the USEPA and/or USGS, so you can easily drill down to associated data for a given geographical locale.

►Click Here to view RAIN's Interactive Map.

Map Note: More-detailed layers may take approximately a half minute to load into your browser depending on your computer and network, browser type and version, and internet connection speed (e.g. Minor Basins).