Danbury Water Quality
Connecticut
According to EPA SDWIS, Danbury, Connecticut is served by 12 community water systems covering about 64,407 people. The same extract lists 28 health-based violation records, most recently coded 8000 in 2025. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Danbury, Connecticut is delivered through 12 EPA-regulated community water systems serving an estimated 64,407 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 28 violation records across the 12 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 5 distinct EPA contaminant codes: Revised Total Coliform Rule, LEAD AND COPPER RULE REVISIONS, Lead and Copper Rule, Interim Enhanced Surface Water Treatment Rule, Coliform (TCR). 11 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 Connecticut 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 |
|---|---|---|---|
| DANBURY WATER DEPARTMENT | 62,055 | 2 | Health |
| LAKE WAUBEEKA ASSOCIATION | 712 | 0 | Clean |
| STONY HILL VILLAGE CONDOMINIUM ASSN | 392 | 0 | Clean |
| AQUA VISTA ASSOC, INC | 388 | 0 | Clean |
| HAWTHORNE TERRACE ASSOC | 156 | 2 | Health |
| BROOKFIELD HILLS CONDOMINIUM UNIT OWNERS | 144 | 6 | Health |
| SNUG HARBOR DEVELOPMENT CORP | 144 | 0 | Clean |
| DANBURY WATER DEPT-RIDGEVIEW GARDENS | 116 | 0 | Clean |
| CORNELL HILLS ASSOC, INC | 108 | 2 | Health |
| WOODCREEK VILLAGE CONDOMINIUM ASSN, INC | 72 | 2 | Health |
| CEDAR TERRACE PROP OWNERS ASSN | 66 | 5 | Health |
| ELMWOOD COURT, LLC | 54 | 9 | Health |
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 |
|---|---|---|
| BROOKFIELD HILLS CONDOMINIUM UNIT OWNERS | Revised Total Coliform Rule | 2025-07-28 |
| BROOKFIELD HILLS CONDOMINIUM UNIT OWNERS | Revised Total Coliform Rule | 2025-07-28 |
| CORNELL HILLS ASSOC, INC | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| WOODCREEK VILLAGE CONDOMINIUM ASSN, INC | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| CEDAR TERRACE PROP OWNERS ASSN | Lead and Copper Rule | 2024-04-01 |
| CEDAR TERRACE PROP OWNERS ASSN | Lead and Copper Rule | 2024-04-01 |
| CEDAR TERRACE PROP OWNERS ASSN | Lead and Copper Rule | 2024-03-29 |
| CEDAR TERRACE PROP OWNERS ASSN | Lead and Copper Rule | 2024-03-29 |
| ELMWOOD COURT, LLC | Revised Total Coliform Rule | 2023-06-25 |
| ELMWOOD COURT, LLC | Revised Total Coliform Rule | 2023-06-25 |
| ELMWOOD COURT, LLC | Revised Total Coliform Rule | 2023-06-25 |
| ELMWOOD COURT, LLC | Revised Total Coliform Rule | 2023-05-01 |
| ELMWOOD COURT, LLC | Revised Total Coliform Rule | 2023-05-01 |
| ELMWOOD COURT, LLC | Revised Total Coliform Rule | 2023-05-01 |
| ELMWOOD COURT, LLC | Revised Total Coliform Rule | 2023-05-01 |
| BROOKFIELD HILLS CONDOMINIUM UNIT OWNERS | Revised Total Coliform Rule | 2023-01-09 |
| BROOKFIELD HILLS CONDOMINIUM UNIT OWNERS | Revised Total Coliform Rule | 2023-01-09 |
| BROOKFIELD HILLS CONDOMINIUM UNIT OWNERS | Revised Total Coliform Rule | 2022-08-31 |
| BROOKFIELD HILLS CONDOMINIUM UNIT OWNERS | Revised Total Coliform Rule | 2022-08-31 |
| ELMWOOD COURT, LLC | Lead and Copper Rule | 2022-01-04 |
| DANBURY WATER DEPARTMENT | Interim Enhanced Surface Water Treatment Rule | 2021-07-01 |
| DANBURY WATER DEPARTMENT | Interim Enhanced Surface Water Treatment Rule | 2021-07-01 |
| CEDAR TERRACE PROP OWNERS ASSN | Revised Total Coliform Rule | 2017-06-01 |
| ELMWOOD COURT, LLC | Revised Total Coliform Rule | 2017-04-16 |
| HAWTHORNE TERRACE ASSOC | Lead and Copper Rule | 2015-01-01 |
| WOODCREEK VILLAGE CONDOMINIUM ASSN, INC | Coliform (TCR) | 2012-12-01 |
| HAWTHORNE TERRACE ASSOC | Lead and Copper Rule | 2012-01-01 |
| CORNELL HILLS ASSOC, INC | Lead and Copper Rule | 1994-12-30 |
What are Danbury's health-based records for?
Danbury's health-based violation records carry 5 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 |
|---|---|---|
| Revised Total Coliform Rule | 15 | 3 |
| Lead and Copper Rule | 8 | 4 |
| Lead and Copper Rule Revisions | 2 | 2 |
| Interim Enhanced Surface Water Treatment Rule | 2 | 1 |
| Coliform (TCR) | 1 | 1 |
TRI Facilities in Danbury
| Facility | Total Releases |
|---|---|
| Rsa Corp | 75.8K lbs |
| Schaeffler Aerospace USA Corp | 35.5K lbs |
| Stanley Engineered Fastening LLC | 3.9K lbs |
| Cs Clean Solutions Inc. | 3.0K lbs |
| Federal Correctional Institution | 1.7K lbs |
| Bedoukian Research Inc. | 681 lbs |
| Amphenol Rf Inc | 607 lbs |
| Tilcon Connecticut Inc | 0 lbs |
| Sealed Air | 0 lbs |
| O&g Industries Inc | 0 lbs |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Danbury, Connecticut? ▼
How many water violations does Danbury have in this EPA extract? ▼
What contaminants were found in Danbury water? ▼
How many water systems serve Danbury? ▼
Where does Danbury get its drinking water? ▼
Are there pollution sources near Danbury? ▼
How does Danbury compare in Connecticut?
Of the 151 Connecticut places with at least one community water system on file, Danbury ranks #5 by number of systems (12).
Either side of it: Stamford (24), Gales Ferry (17), Old Lyme (11), Tolland (11)
About This Data
Figures here are the current EPA SDWIS extract joined to the 12 community water systems whose service area lists Danbury, ranked against the 151 Connecticut 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.