Illinois regional water guide

Illinois Valley and LaSalle County

Illinois Valley communities with municipal groundwater, surface-water influences and locally distinct public systems along the Illinois River corridor.

Regional context

Use the regional hub, then verify the exact property

Illinois Valley communities with municipal groundwater, surface-water influences and locally distinct public systems along the Illinois River corridor. The city pages below identify provider and source-water research starting points, but the current bill and PWSID remain the decisive identifiers.

Do not treat the metro as one water system. Communities within the same labor market can use Lake Michigan water, groundwater, river water, reservoirs or purchased supply from different wholesalers.

Ottawa

Ottawa public water system

Municipal groundwater or local surface-water supply

LaSalle

LaSalle public water system

Municipal groundwater or local surface-water supply

Peru

Peru public water system

Municipal groundwater or local surface-water supply

Streator

Streator public water system

Municipal groundwater or local surface-water supply

Princeton

Princeton public water system

Municipal groundwater or local surface-water supply

Mendota

Mendota public water system

Municipal groundwater or local surface-water supply

Sandwich

Sandwich public water system

Municipal groundwater or local surface-water supply

Marseilles

Marseilles public water system

Municipal groundwater or local surface-water supply

Oglesby

Oglesby public water system

Municipal groundwater or local surface-water supply

Spring Valley

Spring Valley public water system

Municipal groundwater or local surface-water supply
Treatment planning

Match system design to the verified water problem

Regional information organizes the search. Property-level testing, plumbing conditions, peak flow and the exact certified treatment claim determine the final system.

Reviewing Illinois water quality information