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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
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	1300012	Returned to Compliance	01-JUL-2013	31-JUL-2013	Yes
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	0700009	Returned to Compliance	01-DEC-2006	31-DEC-2006	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
1400021	1300012	SOX	State Compliance achieved	06-FEB-2014	State	-
700015	0700009	SOX	State Compliance achieved	30-JUN-2007	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
LAKE MASSABESIC /RAW	1	Yes	Intake	Surface water	Permanent	Active
MERRIMACK RVR RADIAL COLL WELL RCW 1	4	Yes	Intake	Surface water	Permanent	Active
TREATMENT PLANT /FINISHED	3	No	Treatment Plant	-	-	Active
MERRIMACK RVR TREATMENT PLANT	511	No	Treatment Plant	-	-	Active

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
TREATMENT PLANT /FINISHED	3	Activated Carbon, Granular	Particulate removal
TREATMENT PLANT /FINISHED	3	Chloramines	Disinfection
TREATMENT PLANT /FINISHED	3	Filtration, Rapid Sand	Particulate removal
TREATMENT PLANT /FINISHED	3	Chlorine Dioxide	Manganese removal
TREATMENT PLANT /FINISHED	3	Flocculation	Particulate removal
TREATMENT PLANT /FINISHED	3	Sedimentation	Particulate removal
TREATMENT PLANT /FINISHED	3	pH Adjustment	Corrosion control
TREATMENT PLANT /FINISHED	3	Filtered	Particulate removal
TREATMENT PLANT /FINISHED	3	Fluoridation	Other
TREATMENT PLANT /FINISHED	3	pH Adjustment, Post	Corrosion control
TREATMENT PLANT /FINISHED	3	Ozonation, Pre	Disinfection
MERRIMACK RVR TREATMENT PLANT	511	Coagulation	Particulate removal
MERRIMACK RVR TREATMENT PLANT	511	Hypochlorination, Post	Disinfection
MERRIMACK RVR TREATMENT PLANT	511	Inhibitor, Orthophosphate	Corrosion control
MERRIMACK RVR TREATMENT PLANT	511	Fluoridation	Other
MERRIMACK RVR TREATMENT PLANT	511	Chloramines	Disinfection
MERRIMACK RVR TREATMENT PLANT	511	pH Adjustment, Post	Corrosion control
MERRIMACK RVR TREATMENT PLANT	511	Flocculation	Particulate removal
MERRIMACK RVR TREATMENT PLANT	511	Filtration, Pressure Sand	Particulate removal
MERRIMACK RVR TREATMENT PLANT	511	Filtered	Particulate removal
MERRIMACK RVR TREATMENT PLANT	511	Hypochlorination, Pre	Manganese removal
MERRIMACK RVR TREATMENT PLANT	511	Filtration, Greensand	Manganese removal
MERRIMACK RVR TREATMENT PLANT	511	Activated Carbon, Granular	Organics removal
MERRIMACK RVR TREATMENT PLANT	511	Ultraviolet Radiation	Disinfection

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