SHELTON, CT · Hartford County
AQUARION-MARLBOROUGH Water System
Consumer Confidence Report status
AQUARION-MARLBOROUGH must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.
As of August 1, 2026, EPA's federal records show no open violations for AQUARION-MARLBOROUGH.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Connecticut’s official records. Always confirm current status with Connecticut before making decisions based on this information.
System facts
- System ID (PWSID)
- CT0798013
- System type
- Community Water System
- Population served
- 1,348
- Service connections
- 128
- Ownership
- local government
- Water source
- groundwater (wells)
AQUARION-MARLBOROUGH is one of 84 community water systems in Connecticut in the 501 to 3,300 people size category, serving 1,348 people from groundwater.
As of August 1, 2026, its federal record holds 17 entries between 2007 and 2019, all of which EPA lists as closed. Nothing has been added since 2019.
All 17 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves synthetic organic chemicals and volatile organic chemicals.
Violation history
Monitoring, Regular
—1,2-Dichloropropane
October 1, 2019 – December 31, 2019
ResolvedMonitoring, Regular
—ETHYLENE DIBROMIDE
October 1, 2019 – December 31, 2019
ResolvedMonitoring, Regular
—Total Polychlorinated Biphenyls (PCB)
October 1, 2019 – December 31, 2019
ResolvedMonitoring, Regular
—Aldicarb sulfone
October 1, 2019 – December 31, 2019
ResolvedMonitoring, Regular
—Di(2-ethylhexyl) adipate
October 1, 2019 – December 31, 2019
ResolvedMonitoring, Regular
—Dalapon
October 1, 2018 – December 31, 2018
ResolvedMonitoring, Regular
—Aldicarb
October 1, 2018 – December 31, 2018
ResolvedMonitoring, Regular
—LASSO
October 1, 2018 – December 31, 2018
ResolvedMonitoring, Regular
—2,4-D
October 1, 2018 – December 31, 2018
ResolvedMonitoring, Regular
—2,4,5-TP
July 1, 2018 – September 30, 2018
ResolvedMonitoring, Regular
—2,4-D
July 1, 2018 – September 30, 2018
ResolvedMonitoring, Regular
—Picloram
July 1, 2018 – September 30, 2018
ResolvedMonitoring, Regular
—1,2-DIBROMO-3-CHLOROPROPANE
July 1, 2018 – September 30, 2018
ResolvedMonitoring, Regular
—Pentachlorophenol
July 1, 2018 – September 30, 2018
ResolvedMonitoring, Regular
—p-Dichlorobenzene
July 1, 2018 – September 30, 2018
ResolvedMonitoring, Regular
—1,2-Dichloroethane
July 1, 2018 – September 30, 2018
ResolvedMonitoring, Regular
—Di(2-ethylhexyl) phthalate
July 1, 2007 – September 30, 2007
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| October 1, 2019 – December 31, 2019 | Monitoring, Regular | 1,2-Dichloropropane | — | Resolved |
| October 1, 2019 – December 31, 2019 | Monitoring, Regular | ETHYLENE DIBROMIDE | — | Resolved |
| October 1, 2019 – December 31, 2019 | Monitoring, Regular | Total Polychlorinated Biphenyls (PCB) | — | Resolved |
| October 1, 2019 – December 31, 2019 | Monitoring, Regular | Aldicarb sulfone | — | Resolved |
| October 1, 2019 – December 31, 2019 | Monitoring, Regular | Di(2-ethylhexyl) adipate | — | Resolved |
| October 1, 2018 – December 31, 2018 | Monitoring, Regular | Dalapon | — | Resolved |
| October 1, 2018 – December 31, 2018 | Monitoring, Regular | Aldicarb | — | Resolved |
| October 1, 2018 – December 31, 2018 | Monitoring, Regular | LASSO | — | Resolved |
| October 1, 2018 – December 31, 2018 | Monitoring, Regular | 2,4-D | — | Resolved |
| July 1, 2018 – September 30, 2018 | Monitoring, Regular | 2,4,5-TP | — | Resolved |
| July 1, 2018 – September 30, 2018 | Monitoring, Regular | 2,4-D | — | Resolved |
| July 1, 2018 – September 30, 2018 | Monitoring, Regular | Picloram | — | Resolved |
| July 1, 2018 – September 30, 2018 | Monitoring, Regular | 1,2-DIBROMO-3-CHLOROPROPANE | — | Resolved |
| July 1, 2018 – September 30, 2018 | Monitoring, Regular | Pentachlorophenol | — | Resolved |
| July 1, 2018 – September 30, 2018 | Monitoring, Regular | p-Dichlorobenzene | — | Resolved |
| July 1, 2018 – September 30, 2018 | Monitoring, Regular | 1,2-Dichloroethane | — | Resolved |
| July 1, 2007 – September 30, 2007 | Monitoring, Regular | Di(2-ethylhexyl) phthalate | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
No enforcement actions on record for this system.
Common questions
Is AQUARION-MARLBOROUGH required to publish a Consumer Confidence Report?
- Yes. AQUARION-MARLBOROUGH is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is AQUARION-MARLBOROUGH’s next Consumer Confidence Report due?
- AQUARION-MARLBOROUGH’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does AQUARION-MARLBOROUGH have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for AQUARION-MARLBOROUGH.
What is a Consumer Confidence Report?
- A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.
Contact
ULRICH, ROBERT J.
203-926-4320
SHELTON, CT 06484