Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	MS0250024
PWS Name	ST THOMAS WATER ASSOCIATION
PWS Type	Community water system
Owner Type	Public/Private
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	500
County Served	Hinds

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 and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	7109257	Returned to Compliance	01-APR-2025	30-JUN-2025	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7109256	Returned to Compliance	01-APR-2025	30-JUN-2025	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	7109258	Returned to Compliance	04-JUN-2023	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7109253	Returned to Compliance	01-JAN-2023	31-MAR-2023	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	7109259	Returned to Compliance	13-DEC-2022	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7109251	Returned to Compliance	01-OCT-2022	31-DEC-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7109249	Returned to Compliance	01-JUL-2022	30-SEP-2022	Yes
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-226	7109232	Returned to Compliance	01-JUL-2012	30-SEP-2012	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-228	7109230	Returned to Compliance	01-JUL-2012	30-SEP-2012	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-228	7109231	Returned to Compliance	01-JUL-2012	30-SEP-2012	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-226	7109234	Returned to Compliance	01-JUL-2012	30-SEP-2012	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-226	7109228	Returned to Compliance	01-APR-2012	30-JUN-2012	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-228	7109223	Returned to Compliance	01-APR-2012	30-JUN-2012	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-226	7109226	Returned to Compliance	01-APR-2012	30-JUN-2012	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-228	7109225	Returned to Compliance	01-APR-2012	30-JUN-2012	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-226	7109220	Returned to Compliance	01-JAN-2012	31-MAR-2012	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-228	7109218	Returned to Compliance	01-JAN-2012	31-MAR-2012	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-228	7109217	Returned to Compliance	01-JAN-2012	31-MAR-2012	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-226	7109219	Returned to Compliance	01-JAN-2012	31-MAR-2012	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Uranium	7109212	Returned to Compliance	01-OCT-2011	31-DEC-2011	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Uranium	7109208	Returned to Compliance	01-OCT-2011	31-DEC-2011	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-228	7109214	Returned to Compliance	01-OCT-2011	31-DEC-2011	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-228	7109210	Returned to Compliance	01-OCT-2011	31-DEC-2011	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-226	7109213	Returned to Compliance	01-OCT-2011	31-DEC-2011	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-226	7109209	Returned to Compliance	01-OCT-2011	31-DEC-2011	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Uranium	7109200	Returned to Compliance	01-JUL-2011	30-SEP-2011	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-226	7109205	Returned to Compliance	01-JUL-2011	30-SEP-2011	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-226	7109201	Returned to Compliance	01-JUL-2011	30-SEP-2011	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-228	7109206	Returned to Compliance	01-JUL-2011	30-SEP-2011	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-228	7109202	Returned to Compliance	01-JUL-2011	30-SEP-2011	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Uranium	7109204	Returned to Compliance	01-JUL-2011	30-SEP-2011	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Uranium	7109192	Returned to Compliance	01-APR-2011	30-JUN-2011	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-226	7109193	Returned to Compliance	01-APR-2011	30-JUN-2011	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-226	7109197	Returned to Compliance	01-APR-2011	30-JUN-2011	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-228	7109194	Returned to Compliance	01-APR-2011	30-JUN-2011	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-228	7109198	Returned to Compliance	01-APR-2011	30-JUN-2011	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Uranium	7109196	Returned to Compliance	01-APR-2011	30-JUN-2011	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	7109111	Returned to Compliance	01-MAR-2011	31-MAR-2011	Yes
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Uranium	7109188	Returned to Compliance	01-JAN-2011	31-MAR-2011	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-228	7109190	Returned to Compliance	01-JAN-2011	31-MAR-2011	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-228	7109186	Returned to Compliance	01-JAN-2011	31-MAR-2011	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-226	7109185	Returned to Compliance	01-JAN-2011	31-MAR-2011	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-226	7109189	Returned to Compliance	01-JAN-2011	31-MAR-2011	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Uranium	7109184	Returned to Compliance	01-JAN-2011	31-MAR-2011	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-226	7109177	Returned to Compliance	01-OCT-2010	31-DEC-2010	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-228	7109178	Returned to Compliance	01-OCT-2010	31-DEC-2010	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-228	7109182	Returned to Compliance	01-OCT-2010	31-DEC-2010	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Uranium	7109180	Returned to Compliance	01-OCT-2010	31-DEC-2010	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-226	7109181	Returned to Compliance	01-OCT-2010	31-DEC-2010	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Uranium	7109176	Returned to Compliance	01-OCT-2010	31-DEC-2010	No

1 - 50 of 174

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
77	7109259	SO+	State no additional Formal Action needed	15-SEP-2025	State	-
76	7109258	SO+	State no additional Formal Action needed	15-SEP-2025	State	-
78	7109256	SOX	State Compliance achieved	05-AUG-2025	State	-
78	7109257	SOX	State Compliance achieved	05-AUG-2025	State	-
69	7109253	SIF	State Public Notification received	30-JUN-2024	State	-
65	7109249	SIF	State Public Notification received	30-JUN-2023	State	-
68	7109251	SOX	State Compliance achieved	01-JUN-2023	State	-
59	7109230	SIF	State Public Notification received	27-JUN-2013	State	-
59	7109231	SIF	State Public Notification received	27-JUN-2013	State	-
59	7109232	SIF	State Public Notification received	27-JUN-2013	State	-
59	7109234	SIF	State Public Notification received	27-JUN-2013	State	-
59	7109228	SIF	State Public Notification received	27-JUN-2013	State	-
59	7109226	SIF	State Public Notification received	27-JUN-2013	State	-
59	7109225	SIF	State Public Notification received	27-JUN-2013	State	-
59	7109223	SIF	State Public Notification received	27-JUN-2013	State	-
59	7109220	SIF	State Public Notification received	27-JUN-2013	State	-
59	7109219	SIF	State Public Notification received	27-JUN-2013	State	-
59	7109217	SIF	State Public Notification received	27-JUN-2013	State	-
59	7109218	SIF	State Public Notification received	27-JUN-2013	State	-
1	7104308	SOX	State Compliance achieved	30-SEP-2012	State	-
1	7104408	SOX	State Compliance achieved	30-SEP-2012	State	-
1	7104508	SOX	State Compliance achieved	30-SEP-2012	State	-
2	7104608	SOX	State Compliance achieved	30-SEP-2012	State	-
2	7104708	SOX	State Compliance achieved	30-SEP-2012	State	-
2	7104808	SOX	State Compliance achieved	30-SEP-2012	State	-
3	7104908	SOX	State Compliance achieved	30-SEP-2012	State	-
3	7105008	SOX	State Compliance achieved	30-SEP-2012	State	-
3	7105108	SOX	State Compliance achieved	30-SEP-2012	State	-
4	7105208	SOX	State Compliance achieved	30-SEP-2012	State	-
4	7105308	SOX	State Compliance achieved	30-SEP-2012	State	-
4	7105408	SOX	State Compliance achieved	30-SEP-2012	State	-
5	7105508	SOX	State Compliance achieved	30-SEP-2012	State	-
5	7105608	SOX	State Compliance achieved	30-SEP-2012	State	-
5	7105708	SOX	State Compliance achieved	30-SEP-2012	State	-
6	7105808	SOX	State Compliance achieved	30-SEP-2012	State	-
6	7105908	SOX	State Compliance achieved	30-SEP-2012	State	-
6	7106008	SOX	State Compliance achieved	30-SEP-2012	State	-
7	7106109	SOX	State Compliance achieved	30-SEP-2012	State	-
7	7106209	SOX	State Compliance achieved	30-SEP-2012	State	-
7	7106309	SOX	State Compliance achieved	30-SEP-2012	State	-
8	7106409	SOX	State Compliance achieved	30-SEP-2012	State	-
8	7106509	SOX	State Compliance achieved	30-SEP-2012	State	-
8	7106609	SOX	State Compliance achieved	30-SEP-2012	State	-
9	7106709	SOX	State Compliance achieved	30-SEP-2012	State	-
9	7106809	SOX	State Compliance achieved	30-SEP-2012	State	-
9	7106909	SOX	State Compliance achieved	30-SEP-2012	State	-
10	7107009	SOX	State Compliance achieved	30-SEP-2012	State	-
10	7107109	SOX	State Compliance achieved	30-SEP-2012	State	-
10	7107209	SOX	State Compliance achieved	30-SEP-2012	State	-
11	7107309	SOX	State Compliance achieved	30-SEP-2012	State	-

1 - 50 of 174

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WELL WL002	35096	Yes	Well	Ground water	Permanent	Active
WELL WL001	35095	Yes	Well	Ground water	Permanent	Inactive
DISTRIBUTION DS000	37904	No	Distribution System/Zone	-	-	Active
IDSE	40067	No	Distribution System/Zone	-	-	Active
TREATMENT FACILITY TF102	32217	No	Treatment Plant	-	-	Active
TREATMENT FACILITY TF101	32216	No	Treatment Plant	-	-	Inactive

1 - 6 of 6

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TREATMENT FACILITY TF101	32216	Gaseous Chlorination, Post	Disinfection
TREATMENT FACILITY TF101	32216	4-Log Treatment of Viruses	Disinfection
TREATMENT FACILITY TF102	32217	Gaseous Chlorination, Post	Disinfection

1 - 3 of 3

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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