Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	CT0261031
PWS Name	CTWC - SHORELINE REGION-CHESTER SYSTEM
PWS Type	Community water system
Owner Type	Private
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	5030
County Served	Middlesex

The tables below list all violations that the state reported to EPA for this water system. Health-based violations are listed first, followed by treatment technique, MRDL, monitoring, reporting, and other violations.

Health-based	Violations of maximum contaminant levels (MCLs) or maximum residual disinfectant levels (MRDLs), which specify the highest concentrations of contaminants or disinfectants, respectively, allowed in drinking water; or of treatment technique (TT) rules, which specify required processes intended to reduce the amounts of contaminants in drinking water. MCLs, MRDLs, and treatment technique rules are all health-based drinking water standards.
Maximum Contaminant Level or MCL	The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.
Treatment Technique	A required process intended to reduce the level of a contaminant in drinking water.
Maximum residual disinfectant level or MRDL	The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
Monitoring & reporting	Failure to conduct regular monitoring of drinking water quality, as required by SDWA, or to submit monitoring results in a timely fashion to the primacy agency or EPA.
Public notification & other	Failure to provide notification to the public as required by the Violations of Public Notification Rule and the Consumer Confidence Report Rule, and violations of other requirements such as those violations related to variances and exemptions.

Violations

Violation Category Code	Violation Type Description	Rule Name	Contaminant Name	Violation ID	Compliance Status Description	Compliance Period Begin Date	Compliance Period End Date	Is Health Based Ind
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	11613	Returned to Compliance	01-NOV-2016	30-NOV-2016	No
MR	Monitoring, Regular	Nitrate Rule	Nitrite	11208	Returned to Compliance	01-JUL-2007	30-SEP-2007	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	11008	Returned to Compliance	01-JUL-2007	30-SEP-2007	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	11108	Returned to Compliance	01-JUL-2007	30-SEP-2007	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	10908	Returned to Compliance	01-JUL-2007	30-SEP-2007	No
MR	Monitoring, Regular	Nitrate Rule	Nitrite	10807	Returned to Compliance	01-APR-2007	30-JUN-2007	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	10707	Returned to Compliance	01-APR-2007	30-JUN-2007	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	11608	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	9007	Returned to Compliance	01-JUL-2006	30-SEP-2006	No
MR	Monitoring, Regular	Nitrate Rule	Nitrite	9107	Returned to Compliance	01-JUL-2006	30-SEP-2006	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	9607	Returned to Compliance	01-APR-2006	30-JUN-2006	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	9407	Returned to Compliance	01-APR-2006	30-JUN-2006	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Uranium	9207	Returned to Compliance	01-APR-2006	30-JUN-2006	No
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	2806	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	6106	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	6506	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	6606	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	6706	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	6806	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	7006	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	7106	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	7206	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	7306	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	7406	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	7506	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	7606	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	7806	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	8006	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	8106	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	8206	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	8306	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	4606	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	4506	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	3906	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	8606	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Inorganic Chemicals	Mercury	3106	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	3006	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Inorganic Chemicals	CYANIDE	2906	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	2606	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Inorganic Chemicals	Barium	2506	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	2406	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Inorganic Chemicals	Thallium, Total	3806	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Inorganic Chemicals	Beryllium, Total	3706	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Inorganic Chemicals	Antimony, Total	3606	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Inorganic Chemicals	Nickel	3206	Returned to Compliance	01-JAN-2005	31-DEC-2005	No

1 - 45 of 45

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
2115	11613	SIF	State Public Notification received	19-APR-2017	State	-
2008	11608	SOX	State Compliance achieved	08-APR-2008	State	results received
1908	11008	SOX	State Compliance achieved	10-DEC-2007	State	results received
1908	10908	SOX	State Compliance achieved	10-DEC-2007	State	results received
1908	11208	SOX	State Compliance achieved	10-DEC-2007	State	results received
1908	11108	SOX	State Compliance achieved	10-DEC-2007	State	results received
1307	10707	SIA	State Violation/Reminder Notice	20-AUG-2007	State	-
1307	10807	SIA	State Violation/Reminder Notice	20-AUG-2007	State	-
1107	9407	SOX	State Compliance achieved	14-FEB-2007	State	Results received
1107	9607	SOX	State Compliance achieved	14-FEB-2007	State	Results received
1107	9207	SOX	State Compliance achieved	14-FEB-2007	State	Results received
1207	3906	SOX	State Compliance achieved	31-DEC-2006	State	RTC
1207	4506	SOX	State Compliance achieved	31-DEC-2006	State	RTC
1207	4606	SOX	State Compliance achieved	31-DEC-2006	State	RTC
1207	6106	SOX	State Compliance achieved	31-DEC-2006	State	RTC
1207	6506	SOX	State Compliance achieved	31-DEC-2006	State	RTC
1207	6606	SOX	State Compliance achieved	31-DEC-2006	State	RTC
1207	6806	SOX	State Compliance achieved	31-DEC-2006	State	RTC
1207	7006	SOX	State Compliance achieved	31-DEC-2006	State	RTC
1207	7106	SOX	State Compliance achieved	31-DEC-2006	State	RTC
1207	7206	SOX	State Compliance achieved	31-DEC-2006	State	RTC
1207	7306	SOX	State Compliance achieved	31-DEC-2006	State	RTC
1207	7406	SOX	State Compliance achieved	31-DEC-2006	State	RTC
1207	7506	SOX	State Compliance achieved	31-DEC-2006	State	RTC
1207	7606	SOX	State Compliance achieved	31-DEC-2006	State	RTC
1207	7806	SOX	State Compliance achieved	31-DEC-2006	State	RTC
1207	8006	SOX	State Compliance achieved	31-DEC-2006	State	RTC
1207	8106	SOX	State Compliance achieved	31-DEC-2006	State	RTC
1207	8206	SOX	State Compliance achieved	31-DEC-2006	State	RTC
1207	8306	SOX	State Compliance achieved	31-DEC-2006	State	RTC
1207	8606	SOX	State Compliance achieved	31-DEC-2006	State	RTC
1207	3806	SOX	State Compliance achieved	31-DEC-2006	State	RTC
1207	3706	SOX	State Compliance achieved	31-DEC-2006	State	RTC
1207	3606	SOX	State Compliance achieved	31-DEC-2006	State	RTC
1207	3206	SOX	State Compliance achieved	31-DEC-2006	State	RTC
1207	3106	SOX	State Compliance achieved	31-DEC-2006	State	RTC
1207	3006	SOX	State Compliance achieved	31-DEC-2006	State	RTC
1207	2906	SOX	State Compliance achieved	31-DEC-2006	State	RTC
1207	2806	SOX	State Compliance achieved	31-DEC-2006	State	RTC
1207	2606	SOX	State Compliance achieved	31-DEC-2006	State	RTC
1207	2506	SOX	State Compliance achieved	31-DEC-2006	State	RTC
1207	2406	SOX	State Compliance achieved	31-DEC-2006	State	RTC
1207	6706	SOX	State Compliance achieved	31-DEC-2006	State	RTC
707	9007	SFO	State Administrative/Compliance Order with penalty issued	06-DEC-2006	State	-
707	9107	SFO	State Administrative/Compliance Order with penalty issued	06-DEC-2006	State	-

1 - 45 of 45

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
LOWER CHESTER RESERVOIR INTAKE	20041	Yes	Intake	Surface water	Permanent	Active
DENNISON WELL	27845	Yes	Well	Ground water	Permanent	Active
BROOKSIDE WELL	27392	Yes	Well	Ground water	Other	Inactive
LOWER CHESTER RESERVOIR	32560	Yes	Reservoir	Surface water	Permanent	Active
UPPER CHESTER RESERVOIR	32559	Yes	Reservoir	Surface water	Permanent	Active
DEUSES POND	32558	Yes	Reservoir	Surface water	Permanent	Active
WILCOX RESERVOIR	32557	Yes	Reservoir	Surface water	Permanent	Active
TURKEY HILL RESERVOIR	32556	Yes	Reservoir	Surface water	Permanent	Active
TURKEY HILL RESERVOIR INTAKE	20045	Yes	Intake	Surface water	Permanent	Active
WILCOX RESERVOIR INTAKE	20044	Yes	Intake	Surface water	Permanent	Active
DUESES POND INTAKE	20043	Yes	Intake	Surface water	Permanent	Active
UPPER CHESTER RESERVOIR INTAKE	20042	Yes	Intake	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	20046	No	Distribution System/Zone	-	-	Active
CHESTER BOOSTER STATION	50356	No	Pump Facility	-	-	Active
DENNISON WELL WTP ENTRY POINT	45774	No	Sampling Station	-	-	Active
WILLIAMS WTP ENTRY POINT	45775	No	Sampling Station	-	-	Active
ENTRY POINT	38823	No	Sampling Station	-	-	Inactive
ESSEX TANK	50354	No	Storage	-	-	Active
CHESTER BOOSTER HYDROPNEUMATIC TANK	50358	No	Storage	-	-	Active
WILLIAMS CLEARWELL 1	52063	No	Storage	-	-	Active
WILLIAMS CLEARWELL 2	52065	No	Storage	-	-	Active
DENNISON TREATMENT PLANT	36239	No	Treatment Plant	-	-	Active
E. P. WILLIAMS WATER TREATMENT PLANT	36240	No	Treatment Plant	-	-	Active

1 - 23 of 23

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
DENNISON TREATMENT PLANT	36239	pH Adjustment	Corrosion control
DENNISON TREATMENT PLANT	36239	Hypochlorination, Post	Disinfection
DENNISON TREATMENT PLANT	36239	Inhibitor, Hexametaphosphate	Corrosion control
E. P. WILLIAMS WATER TREATMENT PLANT	36240	Hypochlorination, Post	Disinfection
E. P. WILLIAMS WATER TREATMENT PLANT	36240	Coagulation	Particulate removal
E. P. WILLIAMS WATER TREATMENT PLANT	36240	Filtration, Rapid Sand	Particulate removal
E. P. WILLIAMS WATER TREATMENT PLANT	36240	Sedimentation	Particulate removal
E. P. WILLIAMS WATER TREATMENT PLANT	36240	Inhibitor, Bimetallic Phospate	Corrosion control
E. P. WILLIAMS WATER TREATMENT PLANT	36240	pH Adjustment, Post	Corrosion control
E. P. WILLIAMS WATER TREATMENT PLANT	36240	Fluoridation	Other
E. P. WILLIAMS WATER TREATMENT PLANT	36240	Rapid Mix	Disinfection by-products control
E. P. WILLIAMS WATER TREATMENT PLANT	36240	Aeration, Spray	Disinfection by-products control

1 - 12 of 12

For more information on a Water System:
Ask the operators of your water system, contact your primacy agency or file a Freedom of Information Act (FOIA) request.
Drinking water in general: Find out more about your drinking water web site or call the Safe Drinking Water Hotline (1-800-426-4791). EPA has also prepared a table about various regulated drinking water contaminants.
Tools for accessing EPA drinking water data: Safe Drinking Water Information System (SDWIS) Federal Reporting Services and Drinking Water Performance and Results Report.
Research Data: As well as monitoring the levels of drinking water contaminants for which EPA has set standards, EPA, states, and water systems also carry out studies of contaminants that may need to be regulated in the future. For more information about these contaminants, please see the National Contaminant Occurrence Database.

Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Nav Menu

Your Drinking Water Query results from SDWIS Fed Reporting Services

Note

PWS Violation

Violations

Column Actions

Enforcement Actions

Enforcement Actions

Column Actions

PWS Facilities

All Facilities

Column Actions

PWS Treatment Processes

Treatment Processes

Column Actions