Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	TX2450006
PWS Name	SEBASTIAN MUD
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	1884
County Served	Willacy

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, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	1740	Known	01-NOV-2025	30-NOV-2025	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	1739	Open	01-JUL-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1738	Returned to Compliance	01-MAY-2025	-	No
RPT	LSL Reporting	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	1737	Open	17-OCT-2024	-	No
TT	LSL Inventory	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	1736	Open	17-OCT-2024	-	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	1733	Returned to Compliance	01-JUL-2024	31-JUL-2024	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1731	Returned to Compliance	01-AUG-2021	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1729	Returned to Compliance	11-JAN-2021	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1728	Returned to Compliance	11-JAN-2021	-	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	1727	Returned to Compliance	01-JUL-2020	31-JUL-2020	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	1726	Returned to Compliance	01-DEC-2019	31-DEC-2019	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	1725	Returned to Compliance	01-DEC-2019	31-DEC-2019	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	1724	Returned to Compliance	01-NOV-2019	30-NOV-2019	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	1723	Returned to Compliance	01-NOV-2019	30-NOV-2019	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	1722	Returned to Compliance	01-NOV-2019	30-NOV-2019	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	1720	Returned to Compliance	01-SEP-2016	30-SEP-2016	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	1719	Returned to Compliance	01-SEP-2016	30-SEP-2016	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	1718	Returned to Compliance	01-SEP-2016	30-SEP-2016	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	1721	Returned to Compliance	01-SEP-2016	30-SEP-2016	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	1717	Returned to Compliance	01-SEP-2016	30-SEP-2016	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	1716	Returned to Compliance	01-OCT-2015	-	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	E. COLI	1710	Returned to Compliance	01-FEB-2009	28-FEB-2009	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1712	Returned to Compliance	10-JUL-2008	-	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	1708	Returned to Compliance	01-OCT-2007	31-OCT-2007	No
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	105	Returned to Compliance	01-OCT-2004	31-DEC-2004	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	205	Returned to Compliance	01-OCT-2004	31-DEC-2004	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	1505	Returned to Compliance	01-JUL-2004	30-SEP-2004	Yes
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	1003	Known	01-MAY-2003	31-MAY-2003	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	903	Known	01-APR-2003	30-APR-2003	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	803	Known	01-MAR-2003	31-MAR-2003	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	1103	Known	01-FEB-2003	28-FEB-2003	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	1403	Known	01-JAN-2003	31-JAN-2003	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	303	Known	01-DEC-2002	31-DEC-2002	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	1203	Returned to Compliance	01-DEC-2002	31-DEC-2002	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	1303	Known	01-NOV-2002	30-NOV-2002	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	403	Returned to Compliance	01-NOV-2002	30-NOV-2002	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	703	Known	01-OCT-2002	31-OCT-2002	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	602	Returned to Compliance	01-SEP-2002	30-SEP-2002	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	502	Known	01-SEP-2002	30-SEP-2002	No
Other	Notification, Public	Surface Water Treatment Rule	Surface Water Treatment Rule	1079994	Known	01-DEC-1993	31-DEC-1993	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	1079894	Known	01-DEC-1993	31-DEC-1993	No

1 - 41 of 41

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
1493	1739	SIA	State Violation/Reminder Notice	31-DEC-2025	State	-
1490	1737	SIF	State Public Notification received	30-JUN-2025	State	-
1491	1738	SOX	State Compliance achieved	30-JUN-2025	State	-
1492	1736	SIF	State Public Notification received	30-JUN-2025	State	-
1484	1733	SOX	State Compliance achieved	10-JAN-2025	State	SYSTEM MET CRITERIA TO RTC WITH Q4 2024 TOC SUBMISSIONS
1478	1727	SIF	State Public Notification received	17-SEP-2021	State	-
1477	1731	SOX	State Compliance achieved	17-SEP-2021	State	-
1466	1728	SIA	State Violation/Reminder Notice	18-MAR-2021	State	-
1467	1729	SIA	State Violation/Reminder Notice	18-MAR-2021	State	-
1464	1722	SIF	State Public Notification received	01-JUL-2020	State	-
1463	1724	SIF	State Public Notification received	01-JUL-2020	State	-
1465	1723	SIF	State Public Notification received	01-JUL-2020	State	-
1471	1725	SIF	State Public Notification received	30-JUN-2020	State	-
1469	1726	SIF	State Public Notification received	30-JUN-2020	State	-
1442	1718	SIF	State Public Notification received	03-JAN-2017	State	-
1444	1720	SIF	State Public Notification received	03-JAN-2017	State	-
1445	1719	SIF	State Public Notification received	03-JAN-2017	State	-
1443	1721	SIF	State Public Notification received	03-JAN-2017	State	-
1441	1717	SIF	State Public Notification received	03-JAN-2017	State	-
1430	1716	SOX	State Compliance achieved	22-JUL-2016	State	-
1426	1710	SOX	State Compliance achieved	23-JAN-2015	State	01/23/2015; AKATTERJ; ISSUED BIN 1 LETTER ON 04/19/2013.
1408	1708	SIE	State Public Notification requested	10-APR-2008	State	-
1412	1712	SOX	State Compliance achieved	31-OCT-2007	State	AUTOMATIC RETURN TO COMPLIANCE 05/25/2010
1425	602	SOX	State Compliance achieved	13-NOV-2006	State	-
1423	403	SOX	State Compliance achieved	13-NOV-2006	State	-
1424	1203	SOX	State Compliance achieved	13-NOV-2006	State	-
1006	205	SFO	State Administrative/Compliance Order with penalty issued	05-FEB-2006	State	706553062005221
1006	1505	SFO	State Administrative/Compliance Order with penalty issued	05-FEB-2006	State	706553062005221
1006	105	SFO	State Administrative/Compliance Order with penalty issued	05-FEB-2006	State	706553062005221

1 - 29 of 29

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
EMERGENCY I/C W/ N ALAMO WSC	68105	Yes	Consecutive Connection	Surface water	Emergency	Active
INTAKE 1	33954	Yes	Intake	Surface water	Permanent	Active
RAW-TAP	117781	No	Common Headers	-	-	Active
DISTRIBUTION SYSTEM	46360	No	Distribution System/Zone	-	-	Active
PLANT SITE - 648 GPM - SP	72352	No	Pump Facility	-	-	Active
PLANT SITE - 648 GPM - SP	72353	No	Pump Facility	-	-	Active
W 2ND ST / S ALAMO ST; LYFORD	140804	No	Sampling Station	-	-	Active
W 2ND ST / S ALAMO ST, LYFORD	59544	No	Sampling Station	-	-	Active
EXP 77 - 0.100 MG - EL	89386	No	Storage	-	-	Active
PLANT SITE - 0.1535 MG - GR	89387	No	Storage	-	-	Active
PLANT SITE - 0.1535 MG - GR	89388	No	Storage	-	-	Active
PLANT SITE	89389	No	Storage	-	-	Inactive
SWTP - 325 W 2ND ST	11588	No	Treatment Plant	-	-	Active
PLANT 1	12648	No	Treatment Plant	-	-	Inactive

1 - 14 of 14

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
SWTP - 325 W 2ND ST	11588	Hypochlorination, Pre	Disinfection
SWTP - 325 W 2ND ST	11588	Innovative	Disinfection
SWTP - 325 W 2ND ST	11588	Rapid Mix	Particulate removal
SWTP - 325 W 2ND ST	11588	Flocculation	Particulate removal
SWTP - 325 W 2ND ST	11588	Innovative	Particulate removal
SWTP - 325 W 2ND ST	11588	Innovative	Particulate removal
SWTP - 325 W 2ND ST	11588	Hypochlorination, Post	Disinfection
SWTP - 325 W 2ND ST	11588	Innovative	Disinfection
SWTP - 325 W 2ND ST	11588	Innovative	Disinfection
SWTP - 325 W 2ND ST	11588	Innovative	Disinfection
SWTP - 325 W 2ND ST	11588	Innovative	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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