Safe Drinking Water Information System (SDWIS) Federal Reporting Services

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PWS ID	IL1950450
PWS Name	ROCK FALLS
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	8620
County Served	Whiteside

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
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	7175311	Returned to Compliance	01-JUL-2023	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	7175310	Returned to Compliance	01-APR-2023	30-JUN-2023	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	7175308	Returned to Compliance	01-DEC-2022	31-DEC-2022	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	7175309	Returned to Compliance	01-OCT-2022	31-DEC-2022	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	7175307	Returned to Compliance	01-JUL-2022	-	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	7174405	Returned to Compliance	01-JUL-2004	30-SEP-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	7174305	Returned to Compliance	01-JUL-2004	30-SEP-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	7174205	Returned to Compliance	01-JUL-2004	30-SEP-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	7174105	Returned to Compliance	01-JUL-2004	30-SEP-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	7174005	Returned to Compliance	01-JUL-2004	30-SEP-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	7174505	Returned to Compliance	01-JUL-2004	30-SEP-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	7174605	Returned to Compliance	01-JUL-2004	30-SEP-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	7174705	Returned to Compliance	01-JUL-2004	30-SEP-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	7174805	Returned to Compliance	01-JUL-2004	30-SEP-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	7172905	Returned to Compliance	01-JUL-2004	30-SEP-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	7173905	Returned to Compliance	01-JUL-2004	30-SEP-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	7173005	Returned to Compliance	01-JUL-2004	30-SEP-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	7173105	Returned to Compliance	01-JUL-2004	30-SEP-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	7173205	Returned to Compliance	01-JUL-2004	30-SEP-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	7173305	Returned to Compliance	01-JUL-2004	30-SEP-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	7173405	Returned to Compliance	01-JUL-2004	30-SEP-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	7173805	Returned to Compliance	01-JUL-2004	30-SEP-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	7173705	Returned to Compliance	01-JUL-2004	30-SEP-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	7173605	Returned to Compliance	01-JUL-2004	30-SEP-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	7173505	Returned to Compliance	01-JUL-2004	30-SEP-2004	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7172504	Returned to Compliance	01-OCT-2003	31-DEC-2003	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	3170495	Known	01-SEP-1995	30-SEP-1995	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	2837295	Known	01-DEC-1994	31-DEC-1994	No
MCL	Maximum Contaminant Level Violation, Average	Inorganic Chemicals	Fluoride	284184	Returned to Compliance	01-JUN-1984	31-MAY-1987	Yes
MCL	Maximum Contaminant Level Violation, Average	Inorganic Chemicals	Fluoride	284081	Known	01-JUN-1981	31-MAY-1984	Yes
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	7172280	Known	30-JUN-1977	29-JUN-1981	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
5471322	7175310	SIF	State Public Notification received	16-MAY-2024	State	-
5471321	7175311	SOX	State Compliance achieved	16-MAY-2024	State	-
5471314	7175308	SIF	State Public Notification received	24-MAR-2023	State	-
5471315	7175309	SIF	State Public Notification received	24-MAR-2023	State	-
5471308	7175307	SOX	State Compliance achieved	28-JUL-2022	State	-
5470705	7173405	SIF	State Public Notification received	28-FEB-2005	State	-
5470705	7173505	SIF	State Public Notification received	28-FEB-2005	State	-
5470705	7173605	SIF	State Public Notification received	28-FEB-2005	State	-
5470705	7173705	SIF	State Public Notification received	28-FEB-2005	State	-
5470705	7173805	SIF	State Public Notification received	28-FEB-2005	State	-
5470705	7174005	SIF	State Public Notification received	28-FEB-2005	State	-
5470705	7174105	SIF	State Public Notification received	28-FEB-2005	State	-
5470705	7174205	SIF	State Public Notification received	28-FEB-2005	State	-
5470705	7174305	SIF	State Public Notification received	28-FEB-2005	State	-
5470705	7174405	SIF	State Public Notification received	28-FEB-2005	State	-
5470705	7174505	SIF	State Public Notification received	28-FEB-2005	State	-
5470705	7174605	SIF	State Public Notification received	28-FEB-2005	State	-
5470705	7174705	SIF	State Public Notification received	28-FEB-2005	State	-
5470705	7174805	SIF	State Public Notification received	28-FEB-2005	State	-
5470705	7173305	SIF	State Public Notification received	28-FEB-2005	State	-
5470705	7173205	SIF	State Public Notification received	28-FEB-2005	State	-
5470705	7173105	SIF	State Public Notification received	28-FEB-2005	State	-
5470705	7173005	SIF	State Public Notification received	28-FEB-2005	State	-
5470705	7172905	SIF	State Public Notification received	28-FEB-2005	State	-
5470705	7173905	SIF	State Public Notification received	28-FEB-2005	State	-
5470104	7172504	SFK	State Bilateral Compliance Agreement signed	01-JUL-2004	State	W-2004-00311
5468796	3170495	SIF	State Public Notification received	18-DEC-1995	State	-
4267495	2837295	SIF	State Public Notification received	12-MAR-1995	State	-
1016384	284184	SOX	State Compliance achieved	14-NOV-1985	State	-
681	284081	SIE	State Public Notification requested	30-SEP-1981	State	-

1 - 30 of 30

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
CC 02-ROCK FALLS EMERG INTERCONNECTION	26667	Yes	Consecutive Connection	Ground water	Other	Inactive
WELL 7 (02067)	40955	Yes	Well	Ground water	Permanent	Active
WELL 2 (11917)	19699	Yes	Well	Ground water	Permanent	Active
WELL 5 (00716)	18522	Yes	Well	Ground water	Permanent	Active
WELL 4 (11919) ABANDONED	19701	Yes	Well	Ground water	Other	Inactive
WELL 3 (11918) ABANDONED	19700	Yes	Well	Ground water	Other	Inactive
WELL 6 (01276) ABANDONED	19068	Yes	Well	Ground water	Other	Inactive
ROCK FALLS	25252	No	Distribution System/Zone	-	-	Active
IDSE	35580	No	Distribution System/Zone	-	-	Active
SCHOOL LEAD SAMPLING	46290	No	Distribution System/Zone	-	-	Active
CHILD CARE FACILITY LEAD SAMPLING	46291	No	Distribution System/Zone	-	-	Active
GENERIC FINISHED SAMPLING STATION	28911	No	Sampling Station	-	-	Active
GENERIC RAW SAMPLING STATION	31333	No	Sampling Station	-	-	Active
DISTRIBUTION ELEVATED STORAGE	11866	No	Storage	-	-	Active
DISTRIBUTION GROUND STORAGE	12479	No	Storage	-	-	Inactive
TAP 01 GROUND STORAGE	13121	No	Storage	-	-	Inactive
TP 01-ARSENIC & IRON FILTER PLANT	17492	No	Treatment Plant	-	-	Active
TPXX-WELL	17491	No	Treatment Plant	-	-	Inactive
TP 03-TREATMENT (INACTIVE)	33137	No	Treatment Plant	-	-	Inactive

1 - 19 of 19

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TP 01-ARSENIC & IRON FILTER PLANT	17492	Fluoridation	Other
TP 01-ARSENIC & IRON FILTER PLANT	17492	Aeration, Slat Tray	Iron removal
TP 01-ARSENIC & IRON FILTER PLANT	17492	Filtration, Pressure Sand	Inorganics removal
TP 01-ARSENIC & IRON FILTER PLANT	17492	Gaseous Chlorination, Pre	Disinfection
TP 01-ARSENIC & IRON FILTER PLANT	17492	Filtration, Pressure Sand	Iron removal
TP 01-ARSENIC & IRON FILTER PLANT	17492	Gaseous Chlorination, Pre	Iron removal
TP 01-ARSENIC & IRON FILTER PLANT	17492	Gaseous Chlorination, Pre	Manganese removal
TP 03-TREATMENT (INACTIVE)	33137	Filtration, Pressure Sand	Iron removal
TP 03-TREATMENT (INACTIVE)	33137	Gaseous Chlorination, Pre	Disinfection
TP 03-TREATMENT (INACTIVE)	33137	Gaseous Chlorination, Pre	Iron removal
TP 03-TREATMENT (INACTIVE)	33137	Gaseous Chlorination, Pre	Manganese removal
TP 03-TREATMENT (INACTIVE)	33137	Fluoridation	Other
TP 03-TREATMENT (INACTIVE)	33137	Aeration, Slat Tray	Iron removal

1 - 13 of 13

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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