Select your public water supply (PWS) from the list below. Water supplies are not necessarily mapped to ZIP codes so MyTapWater.org will return a list of the top water supplies in your area (ordered by population served). If you don’t recognize a name from the list — it will be on your water bill or yearly Consumer Confidence Report (CCR) — then you will likely be in the top one or two options.
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Chicago | Chicago | 2,700,000 | 83 | 13 |
| Cicero | Cicero | 85,600 | 38 | 7 |
| Arlington Heights | Arlington Heights | 79,000 | 44 | 3 |
| Evanston | Evanston | 74,486 | 37 | 35 |
| Schaumburg | Schaumburg | 74,227 | 35 | 4 |
| Palatine | Palatine | 68,957 | 47 | 4 |
| Skokie | Skokie | 64,784 | 38 | 3 |
| Des Plaines | Des Plaines | 58,918 | 36 | 1 |
| Orland Park | Orland Park | 58,229 | 42 | 3 |
| Tinley Park | Tinley Park | 56,703 | 50 | 7 |
| Oak Lawn | Oak Lawn | 56,690 | 38 | 7 |
| Berwyn | Berwyn | 55,000 | 39 | 18 |
| Hoffman Estates | Hoffman Estates | 51,895 | 35 | 10 |
| Oak Park | Oak Park | 51,878 | 38 | 8 |
| Glenview | Glenview | 48,890 | 48 | 5 |
| Buffalo Grove | Buffalo Grove | 44,949 | 46 | 3 |
| Bartlett | Bartlett | 41,500 | 58 | 59 |
| Mount Prospect | Mount Prospect | 41,492 | 38 | 5 |
| Streamwood | Streamwood | 40,351 | 36 | 3 |
| Hanover Park | Hanover Park | 37,973 | 64 | 32 |