Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	WI2650113
PWS Name	DELAVAN WATERWORKS
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	8451
County Served	Walworth

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
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	1800267	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Check/Repeat/Confirmation	Inorganic Chemicals	Mercury	0300241	Returned to Compliance	01-JAN-2003	31-JAN-2003	No
MR	Monitoring, Check/Repeat/Confirmation	Inorganic Chemicals	Mercury	0300240	Returned to Compliance	01-DEC-2002	31-DEC-2002	No
MR	Monitoring, Check/Repeat/Confirmation	Inorganic Chemicals	Mercury	0300239	Returned to Compliance	01-NOV-2002	30-NOV-2002	No
MR	Monitoring, Check/Repeat/Confirmation	Inorganic Chemicals	Mercury	0300238	Returned to Compliance	01-OCT-2002	31-OCT-2002	No
MR	Monitoring, Check/Repeat/Confirmation	Inorganic Chemicals	Mercury	0300237	Returned to Compliance	01-SEP-2002	30-SEP-2002	No
MR	Monitoring, Check/Repeat/Confirmation	Inorganic Chemicals	Mercury	0200236	Returned to Compliance	01-AUG-2002	31-AUG-2002	No
MR	Monitoring, Check/Repeat/Confirmation	Inorganic Chemicals	Mercury	0200235	Returned to Compliance	01-JUL-2002	31-JUL-2002	No
MR	Monitoring, Check/Repeat/Confirmation	Inorganic Chemicals	Mercury	0200234	Returned to Compliance	22-MAY-2002	30-JUN-2002	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	0100230	Returned to Compliance	01-OCT-2000	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	0000208	Returned to Compliance	01-JUL-2000	-	No
MR	Monitoring, Check/Repeat/Confirmation	Inorganic Chemicals	Fluoride	9900244	Returned to Compliance	21-APR-1999	31-MAY-1999	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	9600071	Returned to Compliance	01-OCT-1995	31-DEC-1995	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	9600070	Returned to Compliance	01-OCT-1995	31-DEC-1995	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	9600069	Returned to Compliance	01-OCT-1995	31-DEC-1995	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	9600067	Returned to Compliance	01-OCT-1995	31-DEC-1995	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	9600065	Returned to Compliance	01-OCT-1995	31-DEC-1995	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	9600045	Returned to Compliance	01-OCT-1995	31-DEC-1995	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	9600064	Returned to Compliance	01-OCT-1995	31-DEC-1995	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	9600079	Returned to Compliance	01-OCT-1995	31-DEC-1995	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	9600063	Returned to Compliance	01-OCT-1995	31-DEC-1995	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	9600062	Returned to Compliance	01-OCT-1995	31-DEC-1995	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	9600044	Returned to Compliance	01-OCT-1995	31-DEC-1995	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	9600055	Returned to Compliance	01-OCT-1995	31-DEC-1995	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	9600054	Returned to Compliance	01-OCT-1995	31-DEC-1995	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	9600053	Returned to Compliance	01-OCT-1995	31-DEC-1995	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	9600077	Returned to Compliance	01-OCT-1995	31-DEC-1995	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	9600076	Returned to Compliance	01-OCT-1995	31-DEC-1995	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	9600046	Returned to Compliance	01-OCT-1995	31-DEC-1995	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	9600058	Returned to Compliance	01-OCT-1995	31-DEC-1995	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	9600072	Returned to Compliance	01-OCT-1995	31-DEC-1995	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	9600043	Returned to Compliance	01-OCT-1995	31-DEC-1995	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	9600074	Returned to Compliance	01-OCT-1995	31-DEC-1995	No

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Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
1800038	1800267	SOX	State Compliance achieved	21-JUN-2018	State	-
0300016	0200235	SOX	State Compliance achieved	25-FEB-2003	State	-
0300023	0300241	SOX	State Compliance achieved	25-FEB-2003	State	-
0300017	0200236	SOX	State Compliance achieved	25-FEB-2003	State	-
0300018	0300239	SOX	State Compliance achieved	25-FEB-2003	State	-
0300019	0300238	SOX	State Compliance achieved	25-FEB-2003	State	-
0300020	0300237	SOX	State Compliance achieved	25-FEB-2003	State	-
0300015	0200234	SOX	State Compliance achieved	25-FEB-2003	State	-
0300021	0300240	SOX	State Compliance achieved	25-FEB-2003	State	-
0200030	9900244	SIA	State Violation/Reminder Notice	14-DEC-2001	State	-
0200014	0000208	SIA	State Violation/Reminder Notice	14-DEC-2001	State	-
0200013	0100230	SIA	State Violation/Reminder Notice	14-DEC-2001	State	-
9600026	9600063	SIE	State Public Notification requested	30-APR-1996	State	-
9600026	9600062	SIE	State Public Notification requested	30-APR-1996	State	-
9600026	9600065	SIE	State Public Notification requested	30-APR-1996	State	-
9600026	9600067	SIE	State Public Notification requested	30-APR-1996	State	-
9600026	9600069	SIE	State Public Notification requested	30-APR-1996	State	-
9600026	9600070	SIE	State Public Notification requested	30-APR-1996	State	-
9600026	9600071	SIE	State Public Notification requested	30-APR-1996	State	-
9600026	9600072	SIE	State Public Notification requested	30-APR-1996	State	-
9600026	9600074	SIE	State Public Notification requested	30-APR-1996	State	-
9600026	9600076	SIE	State Public Notification requested	30-APR-1996	State	-
9600026	9600077	SIE	State Public Notification requested	30-APR-1996	State	-
9600026	9600079	SIE	State Public Notification requested	30-APR-1996	State	-
9600026	9600058	SIE	State Public Notification requested	30-APR-1996	State	-
9600026	9600055	SIE	State Public Notification requested	30-APR-1996	State	-
9600026	9600054	SIE	State Public Notification requested	30-APR-1996	State	-
9600026	9600053	SIE	State Public Notification requested	30-APR-1996	State	-
9600026	9600046	SIE	State Public Notification requested	30-APR-1996	State	-
9600026	9600045	SIE	State Public Notification requested	30-APR-1996	State	-
9600026	9600044	SIE	State Public Notification requested	30-APR-1996	State	-
9600026	9600043	SIE	State Public Notification requested	30-APR-1996	State	-
9600026	9600064	SIE	State Public Notification requested	30-APR-1996	State	-

1 - 33 of 33

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
BH170	3	Yes	Well	Ground water	Permanent	Active
BH169	2	Yes	Well	Ground water	Permanent	Inactive
WJ912	7	Yes	Well	Ground water	Permanent	Active
EQ931	6	Yes	Well	Ground water	Permanent	Active
BH172	5	Yes	Well	Ground water	Permanent	Active
BH171	4	Yes	Well	Ground water	Permanent	Active
26501134	26501134	No	Distribution System/Zone	-	-	Active
200	200	No	Other	-	-	Active
200	200T	No	Treatment Plant	-	-	Active
BH172	5T	No	Treatment Plant	-	-	Active
EQ931	6T	No	Treatment Plant	-	-	Active
WJ912	7T	No	Treatment Plant	-	-	Active

1 - 12 of 12

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
200	200T	Aeration, Packed Tower	Organics removal
200	200T	Filtration, Pressure Sand	Iron removal
200	200T	Fluoridation	Other
200	200T	Gaseous Chlorination, Post	Disinfection
200	200T	Gaseous Chlorination, Pre	Iron removal
200	200T	Inhibitor, Orthophosphate	Corrosion control
200	200T	Innovative	Radionuclides removal
BH172	5T	Filtration, Rapid Sand	Iron removal
BH172	5T	Fluoridation	Other
BH172	5T	Gaseous Chlorination, Post	Disinfection
BH172	5T	Gaseous Chlorination, Pre	Iron removal
BH172	5T	Inhibitor, Orthophosphate	Corrosion control
EQ931	6T	Hypochlorination, Post	Disinfection
WJ912	7T	Filtration, Pressure Sand	Iron removal
WJ912	7T	Fluoridation	Other
WJ912	7T	Gaseous Chlorination, Post	Disinfection
WJ912	7T	Gaseous Chlorination, Pre	Disinfection
WJ912	7T	Inhibitor, Orthophosphate	Corrosion control

1 - 18 of 18

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.

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