Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	OH7003512
PWS Name	ONTARIO CITY
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	6756
County Served	Richland

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
RPT	Notification, Known or Potential LSL	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	8474817	Open	02-JUL-2025	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	8474808	Open	13-DEC-2018	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	4857302	Returned to Compliance	01-JUL-2002	-	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	8474799	Returned to Compliance	01-JUL-1999	31-DEC-1999	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	4518098	Returned to Compliance	01-JAN-1998	31-JAN-1998	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	4517995	Returned to Compliance	01-JAN-1995	30-JUN-1995	No
MR	Monitoring, Regular	Inorganic Chemicals	Nickel	4517495	Returned to Compliance	01-JAN-1995	30-JUN-1995	No
MR	Monitoring, Regular	Inorganic Chemicals	Mercury	4517395	Returned to Compliance	01-JAN-1995	30-JUN-1995	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	4517295	Returned to Compliance	01-JAN-1995	30-JUN-1995	No
MR	Monitoring, Regular	Inorganic Chemicals	CYANIDE	4517195	Returned to Compliance	01-JAN-1995	30-JUN-1995	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	4516995	Returned to Compliance	01-JAN-1995	30-JUN-1995	No
MR	Monitoring, Regular	Inorganic Chemicals	Barium	4516895	Returned to Compliance	01-JAN-1995	30-JUN-1995	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	4516795	Returned to Compliance	01-JAN-1995	30-JUN-1995	No
MR	Monitoring, Regular	Inorganic Chemicals	Asbestos	4516695	Returned to Compliance	01-JAN-1995	30-JUN-1995	No
MR	Monitoring, Regular	Inorganic Chemicals	Thallium, Total	4517895	Returned to Compliance	01-JAN-1995	30-JUN-1995	No
MR	Monitoring, Regular	Inorganic Chemicals	Beryllium, Total	4517795	Returned to Compliance	01-JAN-1995	30-JUN-1995	No
MR	Monitoring, Regular	Inorganic Chemicals	Antimony, Total	4517695	Returned to Compliance	01-JAN-1995	30-JUN-1995	No
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	4517095	Returned to Compliance	01-JAN-1995	30-JUN-1995	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	4517595	Returned to Compliance	01-JAN-1995	30-JUN-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
8040531	8474817	SIE	State Public Notification requested	21-OCT-2025	State	-
8040517	8474808	SIA	State Violation/Reminder Notice	14-DEC-2018	State	-
8040507	4857302	SOX	State Compliance achieved	09-JUL-2007	State	-
498	4518098	SOX	State Compliance achieved	19-APR-2007	State	THIS WAS SOXED BY AN AUTOMATED PROCESS CREATED BY TAB.
2042400	8474799	SIF	State Public Notification received	24-APR-2000	State	-
4296	4517995	SIF	State Public Notification received	17-OCT-1995	State	-
2796	4517095	SIF	State Public Notification received	12-OCT-1995	State	-
2796	4517195	SIF	State Public Notification received	12-OCT-1995	State	-
2796	4517295	SIF	State Public Notification received	12-OCT-1995	State	-
2796	4517395	SIF	State Public Notification received	12-OCT-1995	State	-
2796	4517495	SIF	State Public Notification received	12-OCT-1995	State	-
2796	4517595	SIF	State Public Notification received	12-OCT-1995	State	-
2796	4517695	SIF	State Public Notification received	12-OCT-1995	State	-
2796	4517795	SIF	State Public Notification received	12-OCT-1995	State	-
2796	4517895	SIF	State Public Notification received	12-OCT-1995	State	-
2796	4516695	SIF	State Public Notification received	12-OCT-1995	State	-
2796	4516795	SIF	State Public Notification received	12-OCT-1995	State	-
2796	4516895	SIF	State Public Notification received	12-OCT-1995	State	-
2796	4516995	SIF	State Public Notification received	12-OCT-1995	State	-

1 - 19 of 19

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
EMERGENCY CONNECTION FROM MANSFIELD CITY	44535	Yes	Consecutive Connection	Surface water	Emergency	Inactive
WELL 3	17496	Yes	Well	Ground water	Permanent	Active
WELL 2	17495	Yes	Well	Ground water	Permanent	Active
WELL 1	17494	Yes	Well	Ground water	Permanent	Active
ONTARIO, VILLAGE OF WELL 0E02	17498	Yes	Well	Ground water	Emergency	Inactive
ONTARIO, VILLAGE OF WELL 0E01	17497	Yes	Well	Ground water	Emergency	Inactive
CLEAR WELL	41280	No	Clear Well	-	-	Inactive
ONTARIO CITY DISTRIBUTION	28776	No	Distribution System/Zone	-	-	Active
HIGH SERVICE PUMP	49007	No	Pump Facility	-	-	Active
Ontario, City Of P01	114378	No	Sampling Station	-	-	Inactive
Ontario, City Of P02	114380	No	Sampling Station	-	-	Inactive
ELEVATED TANK PARK AVE W	1001	No	Storage	-	-	Active
ELEVATED TANK MABEE RD	1002	No	Storage	-	-	Active
ELEVATED TANK N LEXINGTON SPRINGMILL RD	1003	No	Storage	-	-	Active
CLEARWELL	46421	No	Storage	-	-	Active
ONTARIO CITY	6933	No	Treatment Plant	-	-	Active
ONTARIO VILLAGE STU 2	6932	No	Treatment Plant	-	-	Inactive

1 - 17 of 17

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
ONTARIO CITY	6933	Fluoridation	Other
ONTARIO CITY	6933	Gaseous Chlorination, Post	Disinfection
ONTARIO CITY	6933	Gaseous Chlorination, Pre	Iron removal
ONTARIO CITY	6933	Permanganate	Iron removal
ONTARIO CITY	6933	Filtration, Greensand	Iron removal
ONTARIO CITY	6933	Ion Exchange	Softening (hardness removal)

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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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