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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 of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	3282949	Returned to Compliance	01-JUL-2025	31-JUL-2025	No
TT	Single Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	3079707	Returned to Compliance	01-DEC-2023	31-DEC-2023	Yes
MCL	Maximum Contaminant Level Violation, Single Sample	Nitrate Rule	Nitrate	0922875	Known	01-OCT-2009	31-DEC-2009	Yes
MCL	Maximum Contaminant Level Violation, Single Sample	Nitrate Rule	Nitrate	0922876	Known	01-OCT-2009	31-DEC-2009	Yes
MCL	Maximum Contaminant Level Violation, Single Sample	Nitrate Rule	Nitrate	0922874	Known	01-JUL-2009	30-SEP-2009	Yes
MCL	Maximum Contaminant Level Violation, Single Sample	Nitrate Rule	Nitrate	0922873	Known	01-APR-2009	30-JUN-2009	Yes
MCL	Maximum Contaminant Level Violation, Single Sample	Nitrate Rule	Nitrate	0922872	Known	01-JAN-2009	31-MAR-2009	Yes
MCL	Maximum Contaminant Level Violation, Single Sample	Nitrate Rule	Nitrate	0822870	Known	01-OCT-2008	31-DEC-2008	Yes
MCL	Maximum Contaminant Level Violation, Single Sample	Nitrate Rule	Nitrate	0822871	Known	01-JUL-2008	30-SEP-2008	Yes
MCL	Maximum Contaminant Level Violation, Single Sample	Nitrate Rule	Nitrate	0822869	Known	01-JAN-2008	31-MAR-2008	Yes
MCL	Maximum Contaminant Level Violation, Single Sample	Nitrate Rule	Nitrate	0722868	Known	01-OCT-2007	31-DEC-2007	Yes
MCL	Maximum Contaminant Level Violation, Single Sample	Nitrate Rule	Nitrate	0722867	Known	01-JUL-2007	30-SEP-2007	Yes
MCL	Maximum Contaminant Level Violation, Single Sample	Nitrate Rule	Nitrate	0722866	Known	01-APR-2007	30-JUN-2007	Yes
MCL	Maximum Contaminant Level Violation, Single Sample	Nitrate Rule	Nitrate	0622864	Known	01-OCT-2006	31-DEC-2006	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	713783	Known	01-AUG-2006	31-AUG-2006	Yes
MCL	Maximum Contaminant Level Violation, Single Sample	Nitrate Rule	Nitrate	0622858	Known	01-JAN-2006	31-MAR-2006	Yes
MCL	Maximum Contaminant Level Violation, Single Sample	Nitrate Rule	Nitrate	0522855	Known	01-APR-2005	30-JUN-2005	Yes
MCL	Maximum Contaminant Level Violation, Single Sample	Nitrate Rule	Nitrate	0522854	Known	01-JAN-2005	31-MAR-2005	Yes
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	0099999	Returned to Compliance	19-OCT-1999	31-DEC-1999	No
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	9700041	Known	01-SEP-1997	30-SEP-1997	Yes
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	9201085	Known	01-JAN-1992	31-JAN-1992	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	8067434	Known	01-OCT-1979	31-OCT-1979	No
MR	Monitoring, Regular	Inorganic Chemicals	Mercury	8067436	Known	01-OCT-1979	31-OCT-1979	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	8067437	Known	01-OCT-1979	31-OCT-1979	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	8067438	Known	01-OCT-1979	31-OCT-1979	No
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	8067433	Known	01-OCT-1979	31-OCT-1979	No
MR	Monitoring, Regular	Inorganic Chemicals	Barium	8067431	Known	01-OCT-1979	31-OCT-1979	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	8067430	Known	01-OCT-1979	31-OCT-1979	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	8051022	Known	01-OCT-1979	31-OCT-1979	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	8067432	Known	01-OCT-1979	31-OCT-1979	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
34593	3282949	SIA	State Violation/Reminder Notice	06-OCT-2025	State	-
3079707ENF	3079707	SOX	State Compliance achieved	02-JAN-2024	State	-
7609	713783	SIA	State Violation/Reminder Notice	15-SEP-2006	State	-
0099999	0099999	EOX	Federal Compliance achieved	31-DEC-1999	ODSWeb	-
9234530	9201085	SIA	State Violation/Reminder Notice	31-JAN-1992	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
NOOKSACK	19002	Yes	Intake	Surface water	Permanent	Active
NORTHWOOD WATER WELL # 1	33435	Yes	Well	Ground water	Emergency	Active
NOOKSACK	1420	No	Treatment Plant	-	-	Active

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
NOOKSACK	1420	Filtration, Rapid Sand	Particulate removal
NOOKSACK	1420	pH Adjustment, Pre	Particulate removal
NOOKSACK	1420	Sedimentation	Particulate removal
NOOKSACK	1420	pH Adjustment, Post	Corrosion control
NOOKSACK	1420	Fluoridation	Other
NOOKSACK	1420	Gaseous Chlorination, Post	Disinfection
NOOKSACK	1420	Ultraviolet Radiation	Disinfection
NOOKSACK	1420	Rapid Mix	Particulate removal
NOOKSACK	1420	Coagulation	Particulate removal
NOOKSACK	1420	Flocculation	Particulate removal

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