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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.

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Violations

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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	8334329	Open	02-JUL-2025	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	8334327	Returned to Compliance	30-DEC-2024	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorite	8334315	Returned to Compliance	01-JAN-2015	31-JAN-2015	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	8334314	Returned to Compliance	01-JUL-2014	30-SEP-2014	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorite	8334307	Returned to Compliance	01-DEC-2006	31-DEC-2006	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	8334200	Returned to Compliance	01-FEB-2000	29-FEB-2000	No

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Enforcement Actions

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Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
8030539	8334329	SIE	State Public Notification requested	21-OCT-2025	State	-
8030535	8334327	SOX	State Compliance achieved	08-JUL-2025	State	-
8030518	8334315	SIF	State Public Notification received	01-JUL-2015	State	-
8030515	8334314	SOX	State Compliance achieved	10-OCT-2014	State	-
8030508	8334307	SOX	State Compliance achieved	08-FEB-2008	State	-
41900	8334200	SIA	State Violation/Reminder Notice	19-APR-2000	State	-

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All Facilities

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Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
TOLEDO OTTER CR EMERGENCY DS CONNECTION	43259	Yes	Consecutive Connection	Surface water	Emergency	Active
INTAKE LAKE ERIE	21782	Yes	Intake	Surface water	Permanent	Active
CLEARWELL 1.5 MG	40401	No	Clear Well	-	-	Inactive
CLEARWELL 6.0 MG	40404	No	Clear Well	-	-	Inactive
OREGON CITY DISTRIBUTION SYSTEM	26722	No	Distribution System/Zone	-	-	Active
LOW SERVICE PUMPS	40402	No	Pump Facility	-	-	Active
HIGH SERVICE PUMPS	40403	No	Pump Facility	-	-	Active
BACKWASH PUMPS	40405	No	Pump Facility	-	-	Active
TRANSFER PUMPS	47212	No	Pump Facility	-	-	Active
Oregon, City Of P01	96932	No	Sampling Station	-	-	Inactive
ELEVATED TANK LALLENDORF RD	43258	No	Storage	-	-	Active
CLEARWELL 6.0 MG	46283	No	Storage	-	-	Active
CLEARWELL 1.5 MG	46418	No	Storage	-	-	Active
ELEVATED TANK COY RD	599	No	Storage	-	-	Active
OREGON CITY	4961	No	Treatment Plant	-	-	Active

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
OREGON CITY	4961	Activated Carbon, Powdered	Taste / odor control
OREGON CITY	4961	Lime - Soda Ash Addition	Softening (hardness removal)
OREGON CITY	4961	Gaseous Chlorination, Post	Disinfection
OREGON CITY	4961	Sludge Treatment	Particulate removal
OREGON CITY	4961	Innovative	Other
OREGON CITY	4961	Fluoridation	Other
OREGON CITY	4961	Algae Control	Taste / odor control
OREGON CITY	4961	Coagulation	Particulate removal
OREGON CITY	4961	Flocculation	Particulate removal
OREGON CITY	4961	Permanganate	Particulate removal
OREGON CITY	4961	Rapid Mix	Particulate removal
OREGON CITY	4961	Sedimentation	Particulate removal
OREGON CITY	4961	Activated Carbon, Granular	Particulate removal
OREGON CITY	4961	Reducing Agents	De-chlorination
OREGON CITY	4961	Ozonation, Pre	Other
OREGON CITY	4961	pH Adjustment, Post	Corrosion control
OREGON CITY	4961	pH Adjustment, Pre	Softening (hardness removal)
OREGON CITY	4961	Inhibitor, Polyphosphate	Particulate removal

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