Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	PA6160005
PWS Name	KNOX WATER WORKS
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	1380
County Served	Clarion

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
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Ground Water Rule	Groundwater Rule	2611096	Returned to Compliance	01-JAN-2026	31-JAN-2026	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	2607435	Known	01-JAN-2025	31-DEC-2025	No
MR	Monitoring, Regular	Nitrate Rule	Nitrite	2607436	Known	01-JAN-2025	31-DEC-2025	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Ground Water Rule	Groundwater Rule	2429341	Returned to Compliance	01-AUG-2024	31-AUG-2024	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	2310268	Returned to Compliance	01-JAN-2022	31-DEC-2022	No
MR	Monitoring, Regular	Nitrate Rule	Nitrite	2310269	Returned to Compliance	01-JAN-2022	31-DEC-2022	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Ground Water Rule	Groundwater Rule	2120091	Known	01-APR-2021	30-APR-2021	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Ground Water Rule	Groundwater Rule	2114237	Returned to Compliance	01-FEB-2021	28-FEB-2021	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	1938760	Returned to Compliance	01-JUL-2019	30-SEP-2019	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1938759	Returned to Compliance	01-JUL-2019	30-SEP-2019	No
Other	Sample Siting Plan Errors (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	1620659	Returned to Compliance	01-APR-2016	-	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Ground Water Rule	Groundwater Rule	1530060	Returned to Compliance	01-SEP-2015	30-SEP-2015	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Ground Water Rule	Groundwater Rule	1526234	Returned to Compliance	01-AUG-2015	31-AUG-2015	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Ground Water Rule	Groundwater Rule	1511801	Returned to Compliance	01-JAN-2015	31-JAN-2015	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1141755	Returned to Compliance	01-JUL-2011	30-SEP-2011	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	0800893	Returned to Compliance	01-OCT-2007	31-OCT-2007	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	0800894	Returned to Compliance	01-OCT-2007	31-DEC-2007	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	0610134	Returned to Compliance	01-DEC-2005	31-DEC-2005	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	0610135	Returned to Compliance	01-OCT-2005	31-DEC-2005	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	0514718	Returned to Compliance	01-JAN-2005	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	02V0001	Returned to Compliance	01-JUL-2002	19-NOV-2002	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	0520583	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	0520578	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Inorganic Chemicals	Mercury	0520581	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	0520580	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Inorganic Chemicals	CYANIDE	0520579	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	0520577	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Inorganic Chemicals	Barium	0520576	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	0520575	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Inorganic Chemicals	Thallium, Total	0520586	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Inorganic Chemicals	Beryllium, Total	0520585	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Inorganic Chemicals	Nickel	0520582	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Inorganic Chemicals	Antimony, Total	0520584	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	9150907	Known	24-JUN-1988	23-JUN-1991	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endrin	9141176	Known	24-JUN-1988	23-JUN-1991	No
MR	Monitoring, Regular	Inorganic Chemicals	Mercury	9150905	Known	24-JUN-1988	23-JUN-1991	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	9150903	Known	24-JUN-1988	23-JUN-1991	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	9141181	Known	24-JUN-1988	23-JUN-1991	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	9141180	Known	24-JUN-1988	23-JUN-1991	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	9150901	Known	24-JUN-1988	23-JUN-1991	No
MR	Monitoring, Regular	Inorganic Chemicals	Barium	9150900	Known	24-JUN-1988	23-JUN-1991	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	9150899	Known	24-JUN-1988	23-JUN-1991	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Toxaphene	9141179	Known	24-JUN-1988	23-JUN-1991	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Methoxychlor	9141178	Known	24-JUN-1988	23-JUN-1991	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	BHC-GAMMA	9141177	Known	24-JUN-1988	23-JUN-1991	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	9150906	Known	24-JUN-1988	23-JUN-1991	No
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	9150902	Known	24-JUN-1988	23-JUN-1991	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	8529128	Returned to Compliance	24-JUN-1982	23-JUN-1985	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endrin	8529117	Known	24-JUN-1982	23-JUN-1985	No
MR	Monitoring, Regular	Inorganic Chemicals	Mercury	8529122	Returned to Compliance	24-JUN-1982	23-JUN-1985	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
26110969003	2611096	SOX	State Compliance achieved	11-MAR-2026	State	-
26074357001	2607435	SIE	State Public Notification requested	11-FEB-2026	State	-
26074357001	2607436	SIE	State Public Notification requested	11-FEB-2026	State	-
252934187003	2429341	SOX	State Compliance achieved	27-DEC-2024	State	-
231026881001	2310269	SIF	State Public Notification received	05-JUN-2023	State	-
231026881001	2310268	SIF	State Public Notification received	05-JUN-2023	State	-
211423768004	2114237	SOX	State Compliance achieved	12-APR-2021	State	-
203875956001	1938759	SOX	State Compliance achieved	20-DEC-2019	State	-
203875956001	1938760	SOX	State Compliance achieved	20-DEC-2019	State	-
162065938001	1620659	SOX	State Compliance achieved	03-MAY-2016	State	-
163006032002	1530060	SOX	State Compliance achieved	28-OCT-2015	State	-
162623432001	1526234	SOX	State Compliance achieved	15-OCT-2015	State	-
151180132001	1511801	SOX	State Compliance achieved	24-FEB-2015	State	-
12417558001	1141755	SOX	State Compliance achieved	01-NOV-2011	State	-
080089381001	0800893	SIF	State Public Notification received	31-JUL-2008	State	-
080089381001	0800894	SIF	State Public Notification received	31-JUL-2008	State	-
061013468001	0610135	SOX	State Compliance achieved	30-MAR-2006	State	-
061013468001	0610134	SOX	State Compliance achieved	30-MAR-2006	State	-
052057563002	0520585	SOX	State Compliance achieved	11-JUL-2005	State	-
052057563002	0520584	SOX	State Compliance achieved	11-JUL-2005	State	-
052057563002	0520578	SOX	State Compliance achieved	11-JUL-2005	State	-
052057563002	0520586	SOX	State Compliance achieved	11-JUL-2005	State	-
052057563002	0520575	SOX	State Compliance achieved	11-JUL-2005	State	-
052057563002	0520576	SOX	State Compliance achieved	11-JUL-2005	State	-
052057563002	0520577	SOX	State Compliance achieved	11-JUL-2005	State	-
052057563002	0520579	SOX	State Compliance achieved	11-JUL-2005	State	-
052057563002	0520580	SOX	State Compliance achieved	11-JUL-2005	State	-
052057563002	0520581	SOX	State Compliance achieved	11-JUL-2005	State	-
052057563002	0520582	SOX	State Compliance achieved	11-JUL-2005	State	-
052057563002	0520583	SOX	State Compliance achieved	11-JUL-2005	State	-
051471863001	0514718	SOX	State Compliance achieved	05-JUL-2005	State	-
0300085	02V0001	EOX	Federal Compliance achieved	19-NOV-2002	ODSWeb	-
9105454	9150907	SIA	State Violation/Reminder Notice	31-JUL-1991	State	-
9105454	9150906	SIA	State Violation/Reminder Notice	31-JUL-1991	State	-
9105454	9150905	SIA	State Violation/Reminder Notice	31-JUL-1991	State	-
9105454	9150903	SIA	State Violation/Reminder Notice	31-JUL-1991	State	-
9105454	9150902	SIA	State Violation/Reminder Notice	31-JUL-1991	State	-
9105454	9150901	SIA	State Violation/Reminder Notice	31-JUL-1991	State	-
9105454	9150900	SIA	State Violation/Reminder Notice	31-JUL-1991	State	-
9105454	9150899	SIA	State Violation/Reminder Notice	31-JUL-1991	State	-
9105455	9141181	SFJ	State Formal Notice of Violation issued	31-JUL-1991	State	-
9105455	9141180	SFJ	State Formal Notice of Violation issued	31-JUL-1991	State	-
9105455	9141179	SFJ	State Formal Notice of Violation issued	31-JUL-1991	State	-
9105455	9141178	SFJ	State Formal Notice of Violation issued	31-JUL-1991	State	-
9105455	9141177	SFJ	State Formal Notice of Violation issued	31-JUL-1991	State	-
9105455	9141176	SFJ	State Formal Notice of Violation issued	31-JUL-1991	State	-
8529114	8529128	SOX	State Compliance achieved	13-JAN-1986	State	-
8529114	8529125	SOX	State Compliance achieved	13-JAN-1986	State	-
8529114	8529124	SOX	State Compliance achieved	13-JAN-1986	State	-
8529114	8529122	SOX	State Compliance achieved	13-JAN-1986	State	-

1 - 50 of 60

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WELL #3	003	Yes	Well	Ground water	Permanent	Active
WELL #8	008	Yes	Well	Ground water	Permanent	Active
WELL #7	007	Yes	Well	Ground water	Permanent	Active
WATER WORKS	102	No	Sampling Station	-	-	Active
KNOX WATERWORKS	305	No	Treatment Plant	-	-	Active
SWARTFAGER	306	No	Treatment Plant	-	-	Active
SHARP SHOPPER	307	No	Treatment Plant	-	-	Active

1 - 7 of 7

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
KNOX WATERWORKS	305	Gaseous Chlorination, Pre	Iron removal
KNOX WATERWORKS	305	Aeration, Cascade	Iron removal
KNOX WATERWORKS	305	Permanganate	Iron removal
KNOX WATERWORKS	305	Coagulation	Inorganics removal
KNOX WATERWORKS	305	Rapid Mix	Inorganics removal
KNOX WATERWORKS	305	Sedimentation	Iron removal
KNOX WATERWORKS	305	Filtration, Greensand	Iron removal
KNOX WATERWORKS	305	Gaseous Chlorination, Post	Disinfection
KNOX WATERWORKS	305	Inhibitor, Polyphosphate	Corrosion control
KNOX WATERWORKS	305	4-Log Treatment of Viruses	Disinfection
SWARTFAGER	306	Ultraviolet Radiation	Disinfection
SHARP SHOPPER	307	Ultraviolet Radiation	Disinfection

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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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