All H2O Plus Locations - Illinois
- Algonquin
- Arlington Heights
- Aurora
- Bloomingdale
- Bloomington
- Bolingbrook
- Bourbonnais
- Calumet City
- Champaign
- Chicago
- Chicago Ridge
- Danville
- Deerfield
- Dekalb
- Downers Grove
- Dundee
- Edwardsville
- Evergreen Park
- Fairview Heights
- Forsyth
- Galesburg
- Geneva
- Glencoe
- Glendale Heights
- Glenview
- Gurnee
- Hodgkins
- Joliet
- Kildeer
- Lincolnwood
- Lombard
- Machesney Park
- Matteson
- Mattoon
- Mchenry
- Moline
- Mt Prospect
- Naperville
- Normal
- Norridge
- North Riverside
- Oak Brook
- Orland Park
- Oswego
- Pekin
- Peoria
- Peru
- Quincy
- Rockford
- Schaumburg
- Shiloh
- Skokie
- Springfield
- St Charles
- Sterling
- Tinley Park
- Vernon Hills
- Wheaton
- Wilmette
- Yorkville