Chicago Water Quality
Illinois
According to EPA SDWIS, Chicago, Illinois is served by 36 community water systems covering about 2,733,053 people. The same extract lists 22 health-based violation records, most recently coded 2039 in 2025. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Chicago, Illinois is delivered through 36 EPA-regulated community water systems serving an estimated 2,733,053 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.
PlainEnviro's health-based SDWIS extract shows 22 violation records across the 36 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 7 distinct EPA contaminant codes: Di(2-ethylhexyl) phthalate, LEAD AND COPPER RULE REVISIONS, Combined Radium (-226 and -228), Revised Total Coliform Rule, Groundwater Rule and 2 others. 100 TRI-reporting industrial facilities are also located within the city limits.
A past EPA health-based registry row does not describe water delivered today or current compliance status; utilities notify customers and remediate under state primacy oversight when required. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the Illinois drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.
Community Water Systems
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| CHICAGO | 2,721,308 | 1 | Health |
| BLACKHAWK ESTATES LLC | 1,238 | 3 | Health |
| FEATHEROCK MHP | 1,044 | 0 | Clean |
| SHADY OAKS MHP | 912 | 0 | Clean |
| WILLOWAY TERRACE MHP | 900 | 0 | Clean |
| WHISPERING PINES MHP | 760 | 1 | Health |
| SUNNY ACRES MHP | 750 | 0 | Clean |
| PARADISE POINT SUBDIVISION | 528 | 0 | Clean |
| Oronoco Estates MHC | 505 | 0 | Clean |
| SHORELINE TRC MHP | 504 | 0 | Clean |
| GRAND ISLAND RESORT MHP (2 WPS) | 480 | 0 | Clean |
| RIDGECREST RESORT COMMUNITY | 476 | 0 | Clean |
| NHC UTILITIES | 401 | 0 | Clean |
| MOUNTAIN VALE VILLAGE MHP | 388 | 0 | Clean |
| FOXWOOD FARMS | 332 | 0 | Clean |
| PLEASANT RIDGE MHP | 284 | 1 | Health |
| LAKE HICKORY RV RESORT | 200 | 0 | Clean |
| ROLLING GREEN ESTATES MHP | 191 | 0 | Clean |
| COUNTRY MANOR | 190 | 0 | Clean |
| ROYAL OAKS MHP | 170 | 1 | Health |
| POYNETTE MOBILE ESTATES | 150 | 10 | Health |
| UNIVERSITY MOBILE ESTATES #2 | 148 | 1 | Health |
| SUGARLOAF MOBILE HOME PARK | 142 | 0 | Clean |
| HARBOR LITES-PISTAKEE FSHG CL | 132 | 0 | Clean |
| WHISPERING PINES ESTATES | 125 | 0 | Clean |
| THREE MILE LAKE TRAILER PARK | 112 | 0 | Clean |
| GOLDEN POND ESTATES | 102 | 0 | Clean |
| SANDWICH ESTATES MHP | 90 | 0 | Clean |
| MAPLE KNOLL | 90 | 2 | Health |
| LAKECREST SHORES LLC | 88 | 0 | Clean |
| APPLEWOOD | 75 | 0 | Clean |
| VIKING RIVER MOBILE HOME PARK | 55 | 1 | Health |
| SHADY BROOK MOBILE HOME PARK | 50 | 0 | Clean |
| WOODLAND ESTATES MHC 1 | 50 | 1 | Health |
| WOODLAND ESTATES MHC 2 | 50 | 0 | Clean |
| SAGE MEADOW OF LAKE GENEVA | 33 | 0 | Clean |
Does this city have health-based water violations?
These health-based records can represent Maximum Contaminant Level (MCL), Treatment Technique (TT), or Maximum Residual Disinfectant Level (MRDL) categories. A historical record does not establish that water is currently unsafe.
| Water system | Contaminant | Begin Date |
|---|---|---|
| POYNETTE MOBILE ESTATES | Di(2-ethylhexyl) phthalate | 2025-10-01 |
| POYNETTE MOBILE ESTATES | Di(2-ethylhexyl) phthalate | 2025-07-01 |
| POYNETTE MOBILE ESTATES | Di(2-ethylhexyl) phthalate | 2025-07-01 |
| POYNETTE MOBILE ESTATES | Di(2-ethylhexyl) phthalate | 2025-04-01 |
| POYNETTE MOBILE ESTATES | Di(2-ethylhexyl) phthalate | 2025-04-01 |
| POYNETTE MOBILE ESTATES | Di(2-ethylhexyl) phthalate | 2025-04-01 |
| WHISPERING PINES MHP | LEAD AND COPPER RULE REVISIONS | 2025-04-01 |
| POYNETTE MOBILE ESTATES | Di(2-ethylhexyl) phthalate | 2025-01-01 |
| POYNETTE MOBILE ESTATES | Di(2-ethylhexyl) phthalate | 2025-01-01 |
| POYNETTE MOBILE ESTATES | Di(2-ethylhexyl) phthalate | 2025-01-01 |
| POYNETTE MOBILE ESTATES | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| BLACKHAWK ESTATES LLC | Combined Radium (-226 and -228) | 2024-04-01 |
| BLACKHAWK ESTATES LLC | Combined Radium (-226 and -228) | 2024-04-01 |
| BLACKHAWK ESTATES LLC | Combined Radium (-226 and -228) | 2024-04-01 |
| WOODLAND ESTATES MHC 1 | Revised Total Coliform Rule | 2019-07-13 |
| MAPLE KNOLL | Groundwater Rule | 2016-11-18 |
| MAPLE KNOLL | Groundwater Rule | 2016-11-18 |
| UNIVERSITY MOBILE ESTATES #2 | Gross Alpha, Excl. Radon and U | 2016-01-01 |
| VIKING RIVER MOBILE HOME PARK | Lead and Copper Rule | 2009-04-01 |
| PLEASANT RIDGE MHP | Lead and Copper Rule | 1997-07-01 |
| ROYAL OAKS MHP | Lead and Copper Rule | 1994-01-01 |
| CHICAGO | Lead and Copper Rule | 1993-01-07 |
What are Chicago's health-based records for?
Chicago's health-based violation records carry 7 distinct EPA codes: some name a substance, others the drinking-water rule that was breached. Counts are records on file in the EPA SDWIS extract, not current test results.
| Contaminant | Records | Systems |
|---|---|---|
| Di(2-ethylhexyl) phthalate | 9 | 1 |
| Lead and Copper Rule | 4 | 4 |
| Combined Radium (-226 and -228) | 3 | 1 |
| Lead and Copper Rule Revisions | 2 | 2 |
| Groundwater Rule | 2 | 1 |
| Gross Alpha, Excl. Radon and U | 1 | 1 |
| Revised Total Coliform Rule | 1 | 1 |
TRI Facilities in Chicago
| Facility | Total Releases |
|---|---|
| A Finkl & Sons Co DBA Finkl Steel - Chicago | 4.3M lbs |
| Befesa Zinc US Inc. | 3.1M lbs |
| Ford Motor Co Chicago Assembly | 1.6M lbs |
| Ardagh Metal Beverage USA Inc Re : Chicago Plant | 1.5M lbs |
| W R Grace & Co | 873.2K lbs |
| Wheatland Tube Co - Chicago Div | 645.3K lbs |
| Gatto Industrial Platers Inc. | 546.8K lbs |
| Bway Corp | 325.3K lbs |
| Century Plating Co Inc. | 279.4K lbs |
| Chicago Steel Container LLC DBA North Coast Container | 204.9K lbs |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Chicago, Illinois? ▼
How many water violations does Chicago have in this EPA extract? ▼
What contaminants were found in Chicago water? ▼
How many water systems serve Chicago? ▼
Where does Chicago get its drinking water? ▼
Are there pollution sources near Chicago? ▼
How does Chicago compare in Illinois?
Of the 1,034 Illinois places with at least one community water system on file, Chicago ranks #2 by number of systems (36).
About This Data
Figures here are the current EPA SDWIS extract joined to the 36 community water systems whose service area lists Chicago, ranked against the 1,034 Illinois places with at least one system on file. Data current as of 2026-08-25.
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.
A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.
TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.
Read our methodology - how this data is sourced, computed, and verified.