Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	TX0280003
PWS Name	MAXWELL SUD
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water purchased
Primacy Type	State
Is Wholesaler?	Yes
Population Served	16104
County Served	Caldwell

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
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	338	Returned to Compliance	01-APR-2025	30-JUN-2025	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	335	Returned to Compliance	01-JAN-2025	31-MAR-2025	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	331	Returned to Compliance	01-OCT-2024	31-DEC-2024	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	329	Returned to Compliance	01-JUL-2024	30-SEP-2024	Yes
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	321	Returned to Compliance	01-MAY-2024	31-MAY-2024	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	319	Returned to Compliance	01-APR-2024	30-JUN-2024	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	316	Returned to Compliance	01-JAN-2024	31-MAR-2024	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	310	Returned to Compliance	01-OCT-2023	31-DEC-2023	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	305	Returned to Compliance	01-JUL-2023	30-SEP-2023	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	300	Returned to Compliance	01-APR-2023	30-JUN-2023	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	294	Returned to Compliance	01-JAN-2023	31-MAR-2023	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	289	Returned to Compliance	01-OCT-2022	31-DEC-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	290	Returned to Compliance	01-OCT-2022	31-DEC-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	284	Returned to Compliance	01-JUL-2022	30-SEP-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	279	Returned to Compliance	01-APR-2022	30-JUN-2022	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	274	Returned to Compliance	16-MAR-2022	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	273	Returned to Compliance	01-JAN-2022	31-MAR-2022	Yes
MR	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	268	Returned to Compliance	02-DEC-2021	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	264	Returned to Compliance	11-OCT-2021	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	266	Returned to Compliance	01-OCT-2021	31-DEC-2021	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	261	Returned to Compliance	01-JUL-2021	30-SEP-2021	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	257	Returned to Compliance	10-DEC-2020	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	254	Returned to Compliance	19-AUG-2020	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	249	Returned to Compliance	08-JUL-2020	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	251	Returned to Compliance	01-JUL-2020	30-SEP-2020	Yes
MR	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	248	Returned to Compliance	23-JUN-2020	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	247	Returned to Compliance	01-APR-2020	30-JUN-2020	Yes
MR	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	243	Returned to Compliance	25-FEB-2020	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	245	Returned to Compliance	01-JAN-2020	31-MAR-2020	Yes
MR	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	241	Returned to Compliance	30-DEC-2019	-	No
MR	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	238	Returned to Compliance	24-DEC-2019	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	242	Returned to Compliance	01-OCT-2019	31-DEC-2019	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	237	Returned to Compliance	01-OCT-2019	31-DEC-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	231	Returned to Compliance	01-JUL-2019	30-SEP-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	227	Returned to Compliance	01-APR-2019	30-JUN-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	228	Returned to Compliance	01-APR-2019	30-JUN-2019	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	218	Returned to Compliance	01-APR-2016	30-JUN-2016	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	216	Returned to Compliance	01-FEB-2012	29-FEB-2012	No
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	105	Returned to Compliance	01-APR-2005	30-JUN-2005	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	205	Returned to Compliance	01-JAN-2005	31-MAR-2005	Yes

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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
895	338	SOX	State Compliance achieved	23-OCT-2025	State	20251023; MRILEY; VIOLS SOX'D BASED ON TTHM DBP2-023Q2025 LRAA
895	261	SOX	State Compliance achieved	23-OCT-2025	State	20251023; MRILEY; VIOLS SOX'D BASED ON TTHM DBP2-023Q2025 LRAA
895	266	SOX	State Compliance achieved	23-OCT-2025	State	20251023; MRILEY; VIOLS SOX'D BASED ON TTHM DBP2-023Q2025 LRAA
895	329	SOX	State Compliance achieved	23-OCT-2025	State	20251023; MRILEY; VIOLS SOX'D BASED ON TTHM DBP2-023Q2025 LRAA
895	335	SOX	State Compliance achieved	23-OCT-2025	State	20251023; MRILEY; VIOLS SOX'D BASED ON TTHM DBP2-023Q2025 LRAA
895	331	SOX	State Compliance achieved	23-OCT-2025	State	20251023; MRILEY; VIOLS SOX'D BASED ON TTHM DBP2-023Q2025 LRAA
895	300	SOX	State Compliance achieved	23-OCT-2025	State	20251023; MRILEY; VIOLS SOX'D BASED ON TTHM DBP2-023Q2025 LRAA
895	294	SOX	State Compliance achieved	23-OCT-2025	State	20251023; MRILEY; VIOLS SOX'D BASED ON TTHM DBP2-023Q2025 LRAA
895	289	SOX	State Compliance achieved	23-OCT-2025	State	20251023; MRILEY; VIOLS SOX'D BASED ON TTHM DBP2-023Q2025 LRAA
895	284	SOX	State Compliance achieved	23-OCT-2025	State	20251023; MRILEY; VIOLS SOX'D BASED ON TTHM DBP2-023Q2025 LRAA
895	279	SOX	State Compliance achieved	23-OCT-2025	State	20251023; MRILEY; VIOLS SOX'D BASED ON TTHM DBP2-023Q2025 LRAA
895	273	SOX	State Compliance achieved	23-OCT-2025	State	20251023; MRILEY; VIOLS SOX'D BASED ON TTHM DBP2-023Q2025 LRAA
885	319	SOX	State Compliance achieved	20-FEB-2025	State	20250220; MRILEY; VIOL'S SOX'D BASED ON TTHM DBP2-01 1Q2025 LRAA
885	310	SOX	State Compliance achieved	20-FEB-2025	State	20250220; MRILEY; VIOL'S SOX'D BASED ON TTHM DBP2-01 1Q2025 LRAA
885	316	SOX	State Compliance achieved	20-FEB-2025	State	20250220; MRILEY; VIOL'S SOX'D BASED ON TTHM DBP2-01 1Q2025 LRAA
885	305	SOX	State Compliance achieved	20-FEB-2025	State	20250220; MRILEY; VIOL'S SOX'D BASED ON TTHM DBP2-01 1Q2025 LRAA
885	290	SOX	State Compliance achieved	20-FEB-2025	State	20250220; MRILEY; VIOL'S SOX'D BASED ON TTHM DBP2-01 1Q2025 LRAA
878	321	SIF	State Public Notification received	02-OCT-2024	State	-
813	264	SOX	State Compliance achieved	30-MAY-2022	State	-
809	274	SOX	State Compliance achieved	30-MAY-2022	State	-
798	268	SIF	State Public Notification received	31-MAR-2022	State	-
771	257	SOX	State Compliance achieved	31-MAR-2021	State	-
781	249	SOX	State Compliance achieved	31-MAR-2021	State	-
771	241	SOX	State Compliance achieved	31-MAR-2021	State	-
777	254	SOX	State Compliance achieved	31-MAR-2021	State	-
769	243	SIF	State Public Notification received	10-MAR-2021	State	-
782	245	SIF	State Public Notification received	10-MAR-2021	State	-
778	247	SIF	State Public Notification received	10-MAR-2021	State	-
770	238	SIF	State Public Notification received	10-MAR-2021	State	-
783	242	SIF	State Public Notification received	10-MAR-2021	State	-
772	251	SIF	State Public Notification received	10-MAR-2021	State	-
768	248	SIF	State Public Notification received	10-MAR-2021	State	-
765	227	SOX	State Compliance achieved	19-NOV-2020	State	VIOL SOX'D BASED ON DBP2-01 AND DBP2-02 4Q2020 TTHM LRAAS
765	237	SOX	State Compliance achieved	19-NOV-2020	State	VIOL SOX'D BASED ON DBP2-01 AND DBP2-02 4Q2020 TTHM LRAAS
765	231	SOX	State Compliance achieved	19-NOV-2020	State	VIOL SOX'D BASED ON DBP2-01 AND DBP2-02 4Q2020 TTHM LRAAS
765	228	SOX	State Compliance achieved	19-NOV-2020	State	VIOL SOX'D BASED ON DBP2-01 AND DBP2-02 4Q2020 TTHM LRAAS
717	218	SIF	State Public Notification received	22-NOV-2016	State	-
711	216	SIF	State Public Notification received	02-MAY-2012	State	-
706	205	SOX	State Compliance achieved	27-DEC-2005	State	-
606	105	SOX	State Compliance achieved	27-DEC-2005	State	-

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
SW FROM CRWA HAYS CALDWELL WTP	34460	Yes	Consecutive Connection	Surface water	Permanent	Active
3 - E OF 2	28745	Yes	Well	Ground water	Permanent	Active
2 - W OF 1	28744	Yes	Well	Ground water	Permanent	Active
1 - 2109 POST RD	28743	Yes	Well	Ground water	Permanent	Active
DISTRIBUTION SYSTEM	38688	No	Distribution System/Zone	-	-	Active
CHICKADEE CIR; SAN MARCOS	133616	No	Sampling Station	-	-	Active
2109 POST RD, SAN MARCOS	141622	No	Sampling Station	-	-	Active
2109 POST RD, SAN MARCOS	48945	No	Sampling Station	-	-	Active
CHICKADEE CIR, SAN MARCOS	62270	No	Sampling Station	-	-	Active
HAYS CR 159 - 0.50 MG - EL	101483	No	Storage	-	-	Active
FM 1966 - 0.15 MG - EL	101484	No	Storage	-	-	Active
FM 1984 - 0.278 MG - ST	101485	No	Storage	-	-	Active
FM 20 - 0.31 MG - ST	101486	No	Storage	-	-	Active
PLANT - 2109 POST RD	4925	No	Treatment Plant	-	-	Active
CRWA HAYS CALDWELL TAKE POINT	11694	No	Treatment Plant	-	-	Inactive

1 - 15 of 15

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
CRWA HAYS CALDWELL TAKE POINT	11694	Chlorination (FRDS-1.5)	Disinfection
PLANT - 2109 POST RD	4925	Chloramines	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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