Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	MO4010379
PWS Name	HORNERSVILLE PWS
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	526
County Served	Dunklin

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
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	119300	Returned to Compliance	01-NOV-2024	30-NOV-2024	No
RPT	LSL Reporting	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	119301	Returned to Compliance	17-OCT-2024	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	119299	Returned to Compliance	28-JUN-2023	-	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	119298	Returned to Compliance	01-MAY-2022	31-MAY-2022	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	119292	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring, Regular	Inorganic Chemicals	Beryllium, Total	119295	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring, Regular	Inorganic Chemicals	Thallium, Total	119296	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring, Regular	Inorganic Chemicals	Antimony, Total	119294	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	119291	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	119297	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring, Regular	Inorganic Chemicals	Mercury	119293	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	119290	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring, Regular	Inorganic Chemicals	Barium	119289	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	119288	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	119245	Returned to Compliance	01-JUL-2019	-	No
MCL	Maximum Contaminant Level Violation, E. coli (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	119244	Returned to Compliance	01-SEP-2018	30-SEP-2018	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	119243	Returned to Compliance	01-APR-2016	30-JUN-2016	Yes
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endrin	119246	Returned to Compliance	01-JAN-2014	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Chlordane	119286	Returned to Compliance	01-JAN-2014	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Pentachlorophenol	119275	Returned to Compliance	01-JAN-2014	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	HEXACHLOROBENZENE	119274	Returned to Compliance	01-JAN-2014	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	119273	Returned to Compliance	01-JAN-2014	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	119272	Returned to Compliance	01-JAN-2014	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor epoxide	119268	Returned to Compliance	01-JAN-2014	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor	119266	Returned to Compliance	01-JAN-2014	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	LASSO	119264	Returned to Compliance	01-JAN-2014	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	119263	Returned to Compliance	01-JAN-2014	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb	119262	Returned to Compliance	01-JAN-2014	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	119261	Returned to Compliance	01-JAN-2014	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfone	119259	Returned to Compliance	01-JAN-2014	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfoxide	119258	Returned to Compliance	01-JAN-2014	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Hexachlorocyclopentadiene	119257	Returned to Compliance	01-JAN-2014	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dinoseb	119256	Returned to Compliance	01-JAN-2014	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Picloram	119255	Returned to Compliance	01-JAN-2014	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Simazine	119254	Returned to Compliance	01-JAN-2014	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	OXAMYL	119253	Returned to Compliance	01-JAN-2014	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dalapon	119252	Returned to Compliance	01-JAN-2014	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Toxaphene	119249	Returned to Compliance	01-JAN-2014	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Methoxychlor	119248	Returned to Compliance	01-JAN-2014	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	BHC-GAMMA	119247	Returned to Compliance	01-JAN-2014	31-DEC-2019	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	119241	Returned to Compliance	01-OCT-2013	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	119242	Returned to Compliance	01-JUL-2013	-	No
MR	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	119240	Returned to Compliance	01-APR-2011	-	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	119227	Returned to Compliance	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Inorganic Chemicals	Beryllium, Total	119216	Returned to Compliance	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Inorganic Chemicals	Thallium, Total	119217	Returned to Compliance	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	119209	Returned to Compliance	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Inorganic Chemicals	Barium	119210	Returned to Compliance	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	119211	Returned to Compliance	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Inorganic Chemicals	Antimony, Total	119215	Returned to Compliance	01-JAN-2008	31-DEC-2010	No

1 - 50 of 80

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
1510061	119301	SIE	State Public Notification requested	09-OCT-2025	State	-
1510064	119300	SIF	State Public Notification received	12-MAY-2025	State	-
1510052	119298	SIF	State Public Notification received	01-OCT-2023	State	-
1510051	119299	SOX	State Compliance achieved	01-SEP-2023	State	-
1510050	119292	SIF	State Public Notification received	16-JUN-2022	State	-
1510050	119294	SIF	State Public Notification received	16-JUN-2022	State	-
1510050	119295	SIF	State Public Notification received	16-JUN-2022	State	-
1510050	119296	SIF	State Public Notification received	16-JUN-2022	State	-
1510050	119297	SIF	State Public Notification received	16-JUN-2022	State	-
1510050	119291	SIF	State Public Notification received	16-JUN-2022	State	-
1510050	119290	SIF	State Public Notification received	16-JUN-2022	State	-
1510050	119289	SIF	State Public Notification received	16-JUN-2022	State	-
1510050	119288	SIF	State Public Notification received	16-JUN-2022	State	-
1510050	119293	SIF	State Public Notification received	16-JUN-2022	State	-
1510053	119218	SOX	State Compliance achieved	08-FEB-2022	State	RTC per EPA compliance policy 1215/2023 JRM
1510053	119217	SOX	State Compliance achieved	08-FEB-2022	State	RTC per EPA compliance policy 1215/2023 JRM
1510053	119216	SOX	State Compliance achieved	08-FEB-2022	State	RTC per EPA compliance policy 1215/2023 JRM
1510053	119215	SOX	State Compliance achieved	08-FEB-2022	State	RTC per EPA compliance policy 1215/2023 JRM
1510053	119214	SOX	State Compliance achieved	08-FEB-2022	State	RTC per EPA compliance policy 1215/2023 JRM
1510053	119213	SOX	State Compliance achieved	08-FEB-2022	State	RTC per EPA compliance policy 1215/2023 JRM
1510053	119212	SOX	State Compliance achieved	08-FEB-2022	State	RTC per EPA compliance policy 1215/2023 JRM
1510053	119211	SOX	State Compliance achieved	08-FEB-2022	State	RTC per EPA compliance policy 1215/2023 JRM
1510053	119210	SOX	State Compliance achieved	08-FEB-2022	State	RTC per EPA compliance policy 1215/2023 JRM
1510053	119209	SOX	State Compliance achieved	08-FEB-2022	State	RTC per EPA compliance policy 1215/2023 JRM
1510054	119230	SOX	State Compliance achieved	28-JUL-2021	State	RTC per EPA compliance policy 1215/2023 JRM
1510054	119220	SOX	State Compliance achieved	28-JUL-2021	State	RTC per EPA compliance policy 1215/2023 JRM
1510054	119232	SOX	State Compliance achieved	28-JUL-2021	State	RTC per EPA compliance policy 1215/2023 JRM
1510054	119233	SOX	State Compliance achieved	28-JUL-2021	State	RTC per EPA compliance policy 1215/2023 JRM
1510054	119234	SOX	State Compliance achieved	28-JUL-2021	State	RTC per EPA compliance policy 1215/2023 JRM
1510054	119235	SOX	State Compliance achieved	28-JUL-2021	State	RTC per EPA compliance policy 1215/2023 JRM
1510054	119236	SOX	State Compliance achieved	28-JUL-2021	State	RTC per EPA compliance policy 1215/2023 JRM
1510054	119237	SOX	State Compliance achieved	28-JUL-2021	State	RTC per EPA compliance policy 1215/2023 JRM
1510054	119238	SOX	State Compliance achieved	28-JUL-2021	State	RTC per EPA compliance policy 1215/2023 JRM
1510054	119239	SOX	State Compliance achieved	28-JUL-2021	State	RTC per EPA compliance policy 1215/2023 JRM
1510054	119219	SOX	State Compliance achieved	28-JUL-2021	State	RTC per EPA compliance policy 1215/2023 JRM
1510054	119229	SOX	State Compliance achieved	28-JUL-2021	State	RTC per EPA compliance policy 1215/2023 JRM
1510054	119228	SOX	State Compliance achieved	28-JUL-2021	State	RTC per EPA compliance policy 1215/2023 JRM
1510054	119227	SOX	State Compliance achieved	28-JUL-2021	State	RTC per EPA compliance policy 1215/2023 JRM
1510054	119226	SOX	State Compliance achieved	28-JUL-2021	State	RTC per EPA compliance policy 1215/2023 JRM
1510054	119225	SOX	State Compliance achieved	28-JUL-2021	State	RTC per EPA compliance policy 1215/2023 JRM
1510054	119224	SOX	State Compliance achieved	28-JUL-2021	State	RTC per EPA compliance policy 1215/2023 JRM
1510054	119223	SOX	State Compliance achieved	28-JUL-2021	State	RTC per EPA compliance policy 1215/2023 JRM
1510054	119222	SOX	State Compliance achieved	28-JUL-2021	State	RTC per EPA compliance policy 1215/2023 JRM
1510054	119221	SOX	State Compliance achieved	28-JUL-2021	State	RTC per EPA compliance policy 1215/2023 JRM
1510054	119231	SOX	State Compliance achieved	28-JUL-2021	State	RTC per EPA compliance policy 1215/2023 JRM
1510056	119246	SOX	State Compliance achieved	30-SEP-2020	State	Per EPA compliance policy, system has RTC - VL 08/02/2024;
1510056	119247	SOX	State Compliance achieved	30-SEP-2020	State	Per EPA compliance policy, system has RTC - VL 08/02/2024;
1510056	119248	SOX	State Compliance achieved	30-SEP-2020	State	Per EPA compliance policy, system has RTC - VL 08/02/2024;
1510056	119249	SOX	State Compliance achieved	30-SEP-2020	State	Per EPA compliance policy, system has RTC - VL 08/02/2024;
1510056	119252	SOX	State Compliance achieved	30-SEP-2020	State	Per EPA compliance policy, system has RTC - VL 08/02/2024;

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
CC 1 DUNKLIN CO PWSD 2 MO4024207	106585	Yes	Consecutive Connection	Ground water	Emergency	Active
WELL # 5	80250	Yes	Well	Ground water	Permanent	Active
#3	80249	Yes	Well	Ground water	Other	Inactive
DISTRIBUTION SYSTEM	86478	No	Distribution System/Zone	-	-	Active
CHEMICAL SAMPLES	91331	No	Sampling Station	-	-	Active
50K GAL STORAGE TANK	75076	No	Storage	-	-	Active
WELL # 5 TREATMENT	98943	No	Treatment Plant	-	-	Active

1 - 7 of 7

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
WELL # 5 TREATMENT	98943	Hypochlorination, Post	Disinfection

1 - 1 of 1

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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