Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	TX1090030
PWS Name	POST OAK SUD
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water purchased
Primacy Type	State
Is Wholesaler?	Yes
Population Served	3117
County Served	Hill

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
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	90064109	Open	01-MAY-2025	-	No
MR	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	90064106	Returned to Compliance	30-DEC-2024	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	90064105	Returned to Compliance	01-NOV-2024	-	No
RPT	LSL Reporting	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	90064108	Open	17-OCT-2024	-	No
TT	LSL Inventory	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	90064107	Open	17-OCT-2024	-	Yes
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	90064103	Returned to Compliance	01-JUL-2024	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	90064104	Returned to Compliance	01-JUL-2024	-	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	90064102	Returned to Compliance	01-OCT-2023	31-OCT-2023	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	90064101	Returned to Compliance	07-JAN-2023	-	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	90064099	Returned to Compliance	01-MAY-2022	31-MAY-2022	No
MR	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	90064098	Returned to Compliance	30-DEC-2021	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	90064097	Returned to Compliance	01-JUL-2021	30-SEP-2021	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	90064095	Returned to Compliance	01-JUL-2020	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	90064094	Returned to Compliance	01-JUL-2018	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	90064090	Returned to Compliance	01-JUL-2015	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	90064089	Returned to Compliance	01-JUL-2014	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	90064086	Returned to Compliance	01-APR-2013	30-JUN-2013	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	90064084	Returned to Compliance	01-APR-2009	30-JUN-2009	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	90059919	Returned to Compliance	01-OCT-2008	31-DEC-2008	No
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	80041176	Returned to Compliance	01-JUL-2008	30-SEP-2008	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	1008	Returned to Compliance	01-APR-2008	30-JUN-2008	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	908	Returned to Compliance	01-OCT-2007	31-DEC-2007	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	808	Returned to Compliance	01-JUL-2007	30-SEP-2007	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	707	Returned to Compliance	01-APR-2007	30-JUN-2007	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	607	Returned to Compliance	01-APR-2007	30-JUN-2007	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	507	Returned to Compliance	01-JAN-2007	31-MAR-2007	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	307	Returned to Compliance	02-OCT-2006	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	407	Returned to Compliance	01-OCT-2006	31-DEC-2006	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	206	Returned to Compliance	01-AUG-2006	31-AUG-2006	Yes
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	104	Returned to Compliance	01-NOV-2003	30-NOV-2003	No
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	194	Known	01-JUL-1993	31-JUL-1993	Yes
MR	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	Lead and Copper Rule	9999193	Returned to Compliance	01-JUL-1992	30-JUN-1993	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	491	Known	01-AUG-1991	31-AUG-1991	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	391	Known	01-JUL-1991	31-JUL-1991	Yes
MR	Monitoring, Repeat Major (TCR)	Total Coliform Rule	Coliform (TCR)	591	Known	01-JUN-1991	30-JUN-1991	No

1 - 35 of 35

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
90107008	90064097	SIF	State Public Notification received	28-MAY-2025	State	-
90107004	90064109	SIA	State Violation/Reminder Notice	28-MAY-2025	State	-
90107009	90064086	SIF	State Public Notification received	28-MAY-2025	State	-
90107006	90064102	SIF	State Public Notification received	28-MAY-2025	State	-
90107005	90064105	SOX	State Compliance achieved	28-MAY-2025	State	-
90107007	90064101	SOX	State Compliance achieved	28-MAY-2025	State	-
90107003	90064106	SOX	State Compliance achieved	27-MAY-2025	State	ADEQUATE LCN RECEIVED 5/23/2025;JMP
90107002	90064104	SOX	State Compliance achieved	23-MAY-2025	State	05/23/2025; KRAMIREZ; SYSTEM SUBMITTED AN ADEQUATE 2024 CCR TO RTC PREV CCR VIOLATION
90107001	90064108	SIE	State Public Notification requested	31-MAR-2025	State	-
90106999	90064107	SIE	State Public Notification requested	31-MAR-2025	State	-
90106995	90064103	SOX	State Compliance achieved	04-NOV-2024	State	11/04/2024; KRAMIREZ; SYSTEM SUBMITTED CCR DOCUMENTS
90106987	90064099	SIF	State Public Notification received	20-JUL-2022	State	-
90106980	90064098	SIA	State Violation/Reminder Notice	31-JAN-2022	State	-
90106977	90064095	SOX	State Compliance achieved	29-OCT-2020	State	-
90106975	90064094	SOX	State Compliance achieved	21-MAR-2019	State	-
90106970	90064089	SOX	State Compliance achieved	19-MAY-2017	State	-
90106967	90064090	SOX	State Compliance achieved	30-NOV-2015	State	11/23/2015;KMCLAIN;RECEIVED ADEQUATE CCR
90106964	90064084	SOX	State Compliance achieved	28-FEB-2014	State	2014/02/28/:BCARRUTH:DLQOR/PN RTC
90106964	90059919	SOX	State Compliance achieved	28-FEB-2014	State	2014/02/28/:BCARRUTH:DLQOR/PN RTC
90106960	104	SIA	State Violation/Reminder Notice	25-JAN-2011	State	-
90106960	206	SIA	State Violation/Reminder Notice	25-JAN-2011	State	-
90093378	80041176	SOX	State Compliance achieved	30-MAR-2009	State	-
90093378	1008	SOX	State Compliance achieved	30-MAR-2009	State	-
90093378	908	SOX	State Compliance achieved	30-MAR-2009	State	-
90093378	808	SOX	State Compliance achieved	30-MAR-2009	State	-
90093378	607	SOX	State Compliance achieved	30-MAR-2009	State	-
90093378	507	SOX	State Compliance achieved	30-MAR-2009	State	-
90093378	407	SOX	State Compliance achieved	30-MAR-2009	State	-
2508	707	SOX	State Compliance achieved	16-JAN-2008	State	-
807	307	SIA	State Violation/Reminder Notice	02-OCT-2006	State	DEFAULT DATE, CHECK FILE FOR ACTUAL DATE OF NOV LETTER.
193	9999193	SOX	State Compliance achieved	30-JUN-1993	State	-
192	591	EFJ	Federal issued Formal Notice of Violation	11-FEB-1992	ODSWeb	-
192	491	EFJ	Federal issued Formal Notice of Violation	11-FEB-1992	ODSWeb	-
192	391	EFJ	Federal issued Formal Notice of Violation	11-FEB-1992	ODSWeb	-

1 - 34 of 34

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
SW FROM CORSICANA THRU DAWSON	35420	Yes	Consecutive Connection	Surface water	Other	Inactive
1 - 2	33646	Yes	Intake	Surface water	Other	Inactive
SW FROM CORSICANA THRU DAWSON	65038	Yes	Consecutive Connection	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	42504	No	Distribution System/Zone	-	-	Active
MAIN PLANT - 1350 GPM - SP	80100	No	Pump Facility	-	-	Active
MAIN PLANT - 1350 GPM - SP	80101	No	Pump Facility	-	-	Active
MAIN PLANT - 740 GPM - SP	80102	No	Pump Facility	-	-	Active
20664 FARM TO MARKET 642; DAWSON	137114	No	Sampling Station	-	-	Active
20664 FARM TO MARKET 642, DAWSON	54272	No	Sampling Station	-	-	Active
EP 000000000000001	60502	No	Sampling Station	-	-	Inactive
MAIN PLANT - 0.5 MG - GR	98356	No	Storage	-	-	Active
MAIN PLANT - 0.5 MG - GR	98357	No	Storage	-	-	Active
CITY OF HUBBARD - 0.25 MG - EL	98358	No	Storage	-	-	Active
PLANT - ELEVATED STORAGE TANK	12184	No	Treatment Plant	-	-	Active
WATER PLANT	10526	No	Treatment Plant	-	-	Inactive
ZZ WATER PLANT	12183	No	Treatment Plant	-	-	Inactive

1 - 16 of 16

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
PLANT - ELEVATED STORAGE TANK	12184	Chloramines	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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