Is STERLING WATER SYSTEM required to publish a Consumer Confidence Report?

Yes. STERLING WATER SYSTEM 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 STERLING WATER SYSTEM’s next Consumer Confidence Report due?

STERLING WATER SYSTEM’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

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.

ONECO, CT · Windham County

STERLING WATER SYSTEM Water System

Consumer Confidence Report status

STERLING WATER SYSTEM 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 1 item for STERLING WATER SYSTEM that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.

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): CT1360011
System type: Community Water System
Population served: 308
Service connections: 90
Ownership: local government
Water source: groundwater (wells)

STERLING WATER SYSTEM is one of 799 community water systems in Connecticut in the 500 or fewer people size category, serving 308 people from groundwater.

As of August 1, 2026, its federal record holds 31 entries between 1994 and 2018, of which 1 remains open; none are health-based.

Of the 31, 30 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, the Radionuclides and Revised Rad Rule, and the Stage 2 Disinfectants and Disinfection Byproducts Rule.

Violation history

Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
September 1, 2018 – August 31, 2019
Resolved
Monitoring and Reporting (DBP)
—
TTHM
September 1, 2018 – August 31, 2019
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2016
Unaddressed
Monitoring, Regular
—
OXAMYL
April 1, 2011 – June 30, 2011
Resolved
Monitoring, Regular
—
Simazine
April 1, 2011 – June 30, 2011
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
April 1, 2011 – June 30, 2011
Resolved
Monitoring, Regular
—
Picloram
April 1, 2011 – June 30, 2011
Resolved
Monitoring, Regular
—
Dinoseb
April 1, 2011 – June 30, 2011
Resolved
Monitoring, Regular
—
Aldicarb sulfoxide
April 1, 2011 – June 30, 2011
Resolved
Monitoring, Regular
—
Aldicarb sulfone
April 1, 2011 – June 30, 2011
Resolved
Monitoring, Regular
—
Aldicarb
April 1, 2011 – June 30, 2011
Resolved
Monitoring, Regular
—
Atrazine
April 1, 2011 – June 30, 2011
Resolved
Monitoring, Regular
—
Heptachlor
April 1, 2011 – June 30, 2011
Resolved
Monitoring, Regular
—
Heptachlor epoxide
April 1, 2011 – June 30, 2011
Resolved
Monitoring, Regular
—
2,4-D
April 1, 2011 – June 30, 2011
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
April 1, 2011 – June 30, 2011
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
April 1, 2011 – June 30, 2011
Resolved
Monitoring, Regular
—
Pentachlorophenol
April 1, 2011 – June 30, 2011
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
April 1, 2011 – June 30, 2011
Resolved
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
April 1, 2011 – June 30, 2011
Resolved
Monitoring, Regular
—
ETHYLENE DIBROMIDE
April 1, 2011 – June 30, 2011
Resolved
Monitoring, Regular
—
Chlordane
April 1, 2011 – June 30, 2011
Resolved
Monitoring, Regular
—
Gross Beta Particle Activity
April 1, 2011 – June 30, 2011
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
April 1, 2011 – June 30, 2011
Resolved
Monitoring, Regular
—
Combined Uranium
April 1, 2011 – June 30, 2011
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
April 1, 2011 – June 30, 2011
Resolved
Monitoring, Regular
—
ManMade Beta Particle and Photon Emitter
April 1, 2011 – June 30, 2011
Resolved
Monitoring, Regular
—
2,4,5-TP
April 1, 2011 – June 30, 2011
Resolved
Monitoring, Regular
—
BHC-GAMMA
April 1, 2011 – June 30, 2011
Resolved
Monitoring, Regular
—
Methoxychlor
April 1, 2011 – June 30, 2011
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
July 1, 1994 – October 12, 1994
Resolved

Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yet

Period	Violation	Contaminant / rule	Health-based	Status
September 1, 2018 – August 31, 2019	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
September 1, 2018 – August 31, 2019	Monitoring and Reporting (DBP)	TTHM	—	Resolved
July 1, 2016	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Unaddressed
April 1, 2011 – June 30, 2011	Monitoring, Regular	OXAMYL	—	Resolved
April 1, 2011 – June 30, 2011	Monitoring, Regular	Simazine	—	Resolved
April 1, 2011 – June 30, 2011	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
April 1, 2011 – June 30, 2011	Monitoring, Regular	Picloram	—	Resolved
April 1, 2011 – June 30, 2011	Monitoring, Regular	Dinoseb	—	Resolved
April 1, 2011 – June 30, 2011	Monitoring, Regular	Aldicarb sulfoxide	—	Resolved
April 1, 2011 – June 30, 2011	Monitoring, Regular	Aldicarb sulfone	—	Resolved
April 1, 2011 – June 30, 2011	Monitoring, Regular	Aldicarb	—	Resolved
April 1, 2011 – June 30, 2011	Monitoring, Regular	Atrazine	—	Resolved
April 1, 2011 – June 30, 2011	Monitoring, Regular	Heptachlor	—	Resolved
April 1, 2011 – June 30, 2011	Monitoring, Regular	Heptachlor epoxide	—	Resolved
April 1, 2011 – June 30, 2011	Monitoring, Regular	2,4-D	—	Resolved
April 1, 2011 – June 30, 2011	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
April 1, 2011 – June 30, 2011	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
April 1, 2011 – June 30, 2011	Monitoring, Regular	Pentachlorophenol	—	Resolved
April 1, 2011 – June 30, 2011	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
April 1, 2011 – June 30, 2011	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
April 1, 2011 – June 30, 2011	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Resolved
April 1, 2011 – June 30, 2011	Monitoring, Regular	Chlordane	—	Resolved
April 1, 2011 – June 30, 2011	Monitoring, Regular	Gross Beta Particle Activity	—	Resolved
April 1, 2011 – June 30, 2011	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
April 1, 2011 – June 30, 2011	Monitoring, Regular	Combined Uranium	—	Resolved
April 1, 2011 – June 30, 2011	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
April 1, 2011 – June 30, 2011	Monitoring, Regular	ManMade Beta Particle and Photon Emitter	—	Resolved
April 1, 2011 – June 30, 2011	Monitoring, Regular	2,4,5-TP	—	Resolved
April 1, 2011 – June 30, 2011	Monitoring, Regular	BHC-GAMMA	—	Resolved
April 1, 2011 – June 30, 2011	Monitoring, Regular	Methoxychlor	—	Resolved
July 1, 1994 – October 12, 1994	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved

Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yet

Enforcement actions

December 18, 2019State Violation/Reminder Notice5 linked violations
August 25, 2011State Violation/Reminder Notice36 linked violations
September 27, 1994State Public Notification received7 linked violations

Common questions

Is STERLING WATER SYSTEM required to publish a Consumer Confidence Report?: Yes. STERLING WATER SYSTEM 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 STERLING WATER SYSTEM’s next Consumer Confidence Report due?: STERLING WATER SYSTEM’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does STERLING WATER SYSTEM have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show 1 item for STERLING WATER SYSTEM that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.
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

JOSLYN, JACK

508-564-2904

ONECO, CT 06373