Public water system record
Danbury Water Department
Serves Danbury, Western Connecticut Planning Region, CT · 62,055 people served
Federal records show 1 health-based violation and 8 monitoring/reporting issues for Danbury Water Department in the last ten years. The most serious issue in this window was a resolved Interim Enhanced Surface Water Treatment Rule violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 8
Key facts
- Danbury Water Department draws water from 2 surface water intakes and 7 reservoirs.
- Most recent formal enforcement: compliance order with a penalty by Connecticut, June 2005.
- Record on file since 1996, with 0 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 9,111 unknown out of 11,688 service lines.
Check whether Danbury Water Department serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Jul 1, 2021 | Resolved | Yes |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Oct 1, 2021 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Dec 30, 2020 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Oct 1, 2017 | Resolved |
|
CARBON, TOTAL
Monitoring and reporting
|
Oct 1, 2017 | Resolved |
|
CARBON, TOTAL
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
Full record since 1996
EPA's records for Danbury Water Department go back to 1996. Before October 19, 2016 they list no health-based violations and 90 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 0 | 33 |
| 2000s | 0 | 48 |
| 2010 to October 18, 2016 | 0 | 9 |
| October 19, 2016 to 2019 | 0 | 6 |
| 2020s | 1 | 2 |
Enforcement actions
Connecticut regulators took 2 formal enforcement actions against Danbury Water Department between 1999 and 2005. The most recent was a compliance order with a penalty in June 2005.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Jun 29, 2005 | Connecticut | Compliance order with a penalty | 4 violations: Nitrate, Nitrite |
| Apr 9, 1999 | Connecticut | Signed compliance agreement | 33 violations: BHC-GAMMA, Toxaphene, 2,4,5-TP, Aldicarb, Atrazine |
What the violations mean
Interim Enhanced Surface Water Treatment Rule
1 incidentThe system did not meet a filtration or treatment requirement for surface water
Inadequate treatment of surface water can let pathogens such as Cryptosporidium and Giardia through
Where the water comes from
Danbury Water Department draws water from 2 surface water intakes and 7 reservoirs. It also buys water from Aquarion-Berkshire. 8 other community water systems buy water from Danbury Water Department. 3 other public water systems have emergency connections to Danbury Water Department.
Buys water from
- Aquarion-Berkshire Shelton, CT
Community systems that buy water from it
- Aquarion-Barnum Shelton, CT
- Aquarion-Berkshire Shelton, CT
- Aquarion-Hollandale Estates Shelton, CT
- Aquarion-Ken Oaks Shelton, CT
- Aquarion-McKeon Shelton, CT
- Aquarion-Pearce Manor Shelton, CT
- Aquarion-Rolling Ridge Shelton, CT
- Cornell Hills Assoc, Inc Danbury, CT
Annual water quality report
Danbury Water Department must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Connecticut.
Certified drinking water labs by state EPA guidance for private wells