Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	IL0990800
PWS Name	OTTAWA
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	18097
County Served	LaSalle

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	7142739	Known	01-OCT-2025	31-DEC-2025	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	7142740	Known	01-OCT-2025	31-DEC-2025	No
RPT	Notification, Known or Potential LSL	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	7142738	Open	02-JUL-2025	-	No
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7142733	Returned to Compliance	01-JUL-2023	30-SEP-2023	Yes
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7142735	Returned to Compliance	01-JAN-2023	31-DEC-2023	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	7142736	Returned to Compliance	01-JAN-2023	31-DEC-2023	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7142729	Returned to Compliance	01-OCT-2022	31-DEC-2022	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7142681	Returned to Compliance	01-JUL-2022	30-SEP-2022	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7142727	Returned to Compliance	01-JAN-2022	31-DEC-2022	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	7142728	Returned to Compliance	01-JAN-2022	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	7142707	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	7142702	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	7142726	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	7142725	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	7142691	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	7142724	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	7142688	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	7142723	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	7142703	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	7142722	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	7142699	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	7142700	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	7142721	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	7142720	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	7142695	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	7142696	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	7142719	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	7142718	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	7142689	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	7142692	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	7142717	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	7142716	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	7142686	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	7142704	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	7142715	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	7142690	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	7142714	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	7142713	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	7142697	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	7142701	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	7142685	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	7142712	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	7142693	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	7142705	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	7142711	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	7142698	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	7142710	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	7142687	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	7142709	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	7142708	Returned to Compliance	01-JAN-2020	31-DEC-2022	No

1 - 50 of 87

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
9872335	7142738	SIE	State Public Notification requested	03-JUL-2025	State	-
9872333	7142736	SOX	State Compliance achieved	22-OCT-2024	State	-
9872333	7142735	SOX	State Compliance achieved	22-OCT-2024	State	-
9872333	7142727	SOX	State Compliance achieved	22-OCT-2024	State	-
9872333	7142728	SOX	State Compliance achieved	22-OCT-2024	State	-
9872331	7142733	SFL	State Administrative/Compliance Order without penalty issued	20-MAY-2024	State	-
9872325	7142723	SOX	State Compliance achieved	02-NOV-2023	State	-
9872325	7142724	SOX	State Compliance achieved	02-NOV-2023	State	-
9872325	7142725	SOX	State Compliance achieved	02-NOV-2023	State	-
9872325	7142726	SOX	State Compliance achieved	02-NOV-2023	State	-
9872325	7142685	SOX	State Compliance achieved	02-NOV-2023	State	-
9872325	7142707	SOX	State Compliance achieved	02-NOV-2023	State	-
9872325	7142708	SOX	State Compliance achieved	02-NOV-2023	State	-
9872325	7142709	SOX	State Compliance achieved	02-NOV-2023	State	-
9872325	7142710	SOX	State Compliance achieved	02-NOV-2023	State	-
9872325	7142711	SOX	State Compliance achieved	02-NOV-2023	State	-
9872325	7142712	SOX	State Compliance achieved	02-NOV-2023	State	-
9872325	7142713	SOX	State Compliance achieved	02-NOV-2023	State	-
9872325	7142714	SOX	State Compliance achieved	02-NOV-2023	State	-
9872325	7142715	SOX	State Compliance achieved	02-NOV-2023	State	-
9872325	7142716	SOX	State Compliance achieved	02-NOV-2023	State	-
9872325	7142717	SOX	State Compliance achieved	02-NOV-2023	State	-
9872325	7142718	SOX	State Compliance achieved	02-NOV-2023	State	-
9872325	7142719	SOX	State Compliance achieved	02-NOV-2023	State	-
9872325	7142720	SOX	State Compliance achieved	02-NOV-2023	State	-
9872325	7142721	SOX	State Compliance achieved	02-NOV-2023	State	-
9872325	7142722	SOX	State Compliance achieved	02-NOV-2023	State	-
9872296	7142705	SOX	State Compliance achieved	28-JUN-2023	State	-
9872296	7142706	SOX	State Compliance achieved	28-JUN-2023	State	-
9872296	7142703	SOX	State Compliance achieved	28-JUN-2023	State	-
9872296	7142704	SOX	State Compliance achieved	28-JUN-2023	State	-
9872296	7142686	SOX	State Compliance achieved	28-JUN-2023	State	-
9872296	7142702	SOX	State Compliance achieved	28-JUN-2023	State	-
9872296	7142701	SOX	State Compliance achieved	28-JUN-2023	State	-
9872296	7142700	SOX	State Compliance achieved	28-JUN-2023	State	-
9872296	7142699	SOX	State Compliance achieved	28-JUN-2023	State	-
9872296	7142698	SOX	State Compliance achieved	28-JUN-2023	State	-
9872296	7142697	SOX	State Compliance achieved	28-JUN-2023	State	-
9872296	7142696	SOX	State Compliance achieved	28-JUN-2023	State	-
9872296	7142695	SOX	State Compliance achieved	28-JUN-2023	State	-
9872296	7142694	SOX	State Compliance achieved	28-JUN-2023	State	-
9872296	7142693	SOX	State Compliance achieved	28-JUN-2023	State	-
9872296	7142692	SOX	State Compliance achieved	28-JUN-2023	State	-
9872296	7142691	SOX	State Compliance achieved	28-JUN-2023	State	-
9872296	7142690	SOX	State Compliance achieved	28-JUN-2023	State	-
9872296	7142689	SOX	State Compliance achieved	28-JUN-2023	State	-
9872296	7142688	SOX	State Compliance achieved	28-JUN-2023	State	-
9872296	7142687	SOX	State Compliance achieved	28-JUN-2023	State	-
9872301	7142729	SIF	State Public Notification received	09-MAY-2023	State	-
9872238	7142681	SOX	State Compliance achieved	27-OCT-2022	State	-

1 - 50 of 84

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
CC08-NAPLATE EMERGENCY CONNECT	26308	Yes	Consecutive Connection	Ground water	Emergency	Active
WELL 14 (01349)	32296	Yes	Well	Ground water	Permanent	Active
WELL 11 (11504)	19412	Yes	Well	Ground water	Permanent	Active
WELL 10 (11503)	19411	Yes	Well	Ground water	Permanent	Active
WELL 8 (11502)	19410	Yes	Well	Ground water	Permanent	Active
WELL 7 (11501) ABANDONED	19409	Yes	Well	Ground water	Other	Inactive
WELL 12 (00714) EMERGENCY	18520	Yes	Well	Ground water	Emergency	Active
CC01 RETZ ADDITION IL0995400	45708	Yes	Consecutive Connection	Ground water	Permanent	Active
OTTAWA	24274	No	Distribution System/Zone	-	-	Active
SCHOOL LEAD SAMPLING	46480	No	Distribution System/Zone	-	-	Active
CHILDCARE FACILITY LEAD SAMPLING	46481	No	Distribution System/Zone	-	-	Active
PF04-NORTH SIDE BOOSTER STATION	22916	No	Pump Facility	-	-	Active
PF05-SOUTH BOOSTER STATION	22917	No	Pump Facility	-	-	Active
PF09-EVANS STREET BOOSTER STATION	31678	No	Pump Facility	-	-	Inactive
PF 10 LASALLE BOOSTER	34797	No	Pump Facility	-	-	Inactive
GENERIC FINISHED SAMPLING STATION	27933	No	Sampling Station	-	-	Active
GENERIC RAW SAMPLING STATION	30355	No	Sampling Station	-	-	Active
WATER QUALITY SAMPLING	41675	No	Sampling Station	-	-	Active
WATER QUALITY SAMPLING	41676	No	Sampling Station	-	-	Active
GR01 - 466,000 GAL CLEARWELL	45701	No	Storage	-	-	Active
GR02 - 170000 GAL CLEARWELL	45702	No	Storage	-	-	Active
ELEV01 1MG ELEVATED TANK	45703	No	Storage	-	-	Active
ELEV02 0.5 MG ELEVATAD TANK	45704	No	Storage	-	-	Active
ELEV03 0.5MG ELEVATED TANK	45705	No	Storage	-	-	Active
ELEV04 0.5 MG STANDPIPE	45706	No	Storage	-	-	Active
ELEV05 0.6 MG STANDPIPE	45707	No	Storage	-	-	Active
DISTRIBUTION ELEVATED STORAGE	11395	No	Storage	-	-	Inactive
TAP 04 GROUND STORAGE	12907	No	Storage	-	-	Inactive
TAP 05 GROUND STORAGE	12908	No	Storage	-	-	Inactive
DISTRIBUTION STANDPIPE STORAGE	14398	No	Storage	-	-	Inactive
DISTRIBUTION GROUND STORAGE	33793	No	Storage	-	-	Inactive
TM06-LASALLE ST BOOSTER STATION	22918	No	Transmission Main (Manifold)	-	-	Active
TP 01-WELLS 8, 11, &14 CENTRAL RO PLANT	16288	No	Treatment Plant	-	-	Active
TP 02-WELL #10 RO PLANT	16289	No	Treatment Plant	-	-	Active
TP 07-WELLSITE 12 (EMERGENCY)	16291	No	Treatment Plant	-	-	Active
TP 03-INACTIVE	16290	No	Treatment Plant	-	-	Inactive

1 - 36 of 36

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TP 01-WELLS 8, 11, &14 CENTRAL RO PLANT	16288	Coagulation	Radionuclides removal
TP 01-WELLS 8, 11, &14 CENTRAL RO PLANT	16288	Filtration, Cartridge	Particulate removal
TP 01-WELLS 8, 11, &14 CENTRAL RO PLANT	16288	Aeration, Slat Tray	Disinfection by-products control
TP 01-WELLS 8, 11, &14 CENTRAL RO PLANT	16288	Hypochlorination, Post	Disinfection
TP 01-WELLS 8, 11, &14 CENTRAL RO PLANT	16288	Fluoridation	Other
TP 01-WELLS 8, 11, &14 CENTRAL RO PLANT	16288	pH Adjustment, Post	Disinfection by-products control
TP 01-WELLS 8, 11, &14 CENTRAL RO PLANT	16288	Reverse Osmosis	Radionuclides removal
TP 02-WELL #10 RO PLANT	16289	pH Adjustment, Post	Corrosion control
TP 02-WELL #10 RO PLANT	16289	Filtration, Cartridge	Particulate removal
TP 02-WELL #10 RO PLANT	16289	Aeration, Slat Tray	De-chlorination
TP 02-WELL #10 RO PLANT	16289	Gaseous Chlorination, Post	Disinfection
TP 02-WELL #10 RO PLANT	16289	Fluoridation	Other
TP 02-WELL #10 RO PLANT	16289	pH Adjustment	Iron removal
TP 02-WELL #10 RO PLANT	16289	Reverse Osmosis	Radionuclides removal
TP 07-WELLSITE 12 (EMERGENCY)	16291	Fluoridation	Other
TP 07-WELLSITE 12 (EMERGENCY)	16291	Gaseous Chlorination, Pre	Disinfection
TP 07-WELLSITE 12 (EMERGENCY)	16291	Inhibitor, Polyphosphate	Corrosion control

1 - 17 of 17

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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