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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
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	1	Returned to Compliance	01-JAN-2007	31-JAN-2007	No
MR	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	Lead and Copper Rule	9299001	Returned to Compliance	01-JAN-1992	17-SEP-1992	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
1	1	SOX	State Compliance achieved	13-FEB-2007	State	ENFORCEMENTID :0745863; EPA AUDIT FINDING/LATE REPORT
9299001	9299001	EOX	Federal Compliance achieved	17-SEP-1992	ODSWeb	-

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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
POTOMAC RIVER	15408	Yes	Intake	Surface water	Permanent	Active
DUCKETT RESERVOIR PATUXENT R	15434	Yes	Reservoir	Surface water	Permanent	Active
POTOMAC FILTER PLANT	15767	No	Common Headers	-	-	Active
PATUXENT FILTER PLANT	15768	No	Common Headers	-	-	Active
DISTRIBUTION SYSTEM	8780	No	Distribution System/Zone	-	-	Active
STORAGE TANK	19069	No	Storage	-	-	Active
POTOMAC FILTER PLANT	26236	No	Treatment Plant	-	-	Active
PATUXENT FILTER PLANT	26237	No	Treatment Plant	-	-	Active

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
POTOMAC FILTER PLANT	26236	Gaseous Chlorination, Post	Disinfection
POTOMAC FILTER PLANT	26236	pH Adjustment	Corrosion control
POTOMAC FILTER PLANT	26236	Activated Carbon, Powdered	Organics removal
POTOMAC FILTER PLANT	26236	Coagulation	Particulate removal
POTOMAC FILTER PLANT	26236	Filtration, Rapid Sand	Particulate removal
POTOMAC FILTER PLANT	26236	Flocculation	Particulate removal
POTOMAC FILTER PLANT	26236	Rapid Mix	Particulate removal
POTOMAC FILTER PLANT	26236	Sedimentation	Particulate removal
POTOMAC FILTER PLANT	26236	Algae Control	Taste / odor control
POTOMAC FILTER PLANT	26236	Permanganate	Taste / odor control
POTOMAC FILTER PLANT	26236	Fluoridation	Other
POTOMAC FILTER PLANT	26236	Ultraviolet Radiation	Disinfection
PATUXENT FILTER PLANT	26237	Gaseous Chlorination, Pre	Disinfection
PATUXENT FILTER PLANT	26237	pH Adjustment	Corrosion control
PATUXENT FILTER PLANT	26237	Permanganate	Iron removal
PATUXENT FILTER PLANT	26237	Lime - Soda Ash Addition	Softening (hardness removal)
PATUXENT FILTER PLANT	26237	Coagulation	Particulate removal
PATUXENT FILTER PLANT	26237	Filtration, Rapid Sand	Particulate removal
PATUXENT FILTER PLANT	26237	Flocculation	Particulate removal
PATUXENT FILTER PLANT	26237	Rapid Mix	Particulate removal
PATUXENT FILTER PLANT	26237	Sedimentation	Particulate removal
PATUXENT FILTER PLANT	26237	Activated Carbon, Powdered	Taste / odor control
PATUXENT FILTER PLANT	26237	Fluoridation	Other
PATUXENT FILTER PLANT	26237	Inhibitor, Orthophosphate	Corrosion control
PATUXENT FILTER PLANT	26237	Ultraviolet Radiation	Disinfection

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