Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	NC0362010
PWS Name	MONTGOMERY COUNTY WATER SYSTEM
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	14710
County Served	Montgomery

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	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1805339	Open	15-AUG-2025	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1805337	Returned to Compliance	01-JUL-2025	30-SEP-2025	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1805329	Returned to Compliance	19-JUN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1805328	Returned to Compliance	19-JUN-2025	-	No
MR	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1805338	Open	01-JUN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1805331	Returned to Compliance	04-APR-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1805330	Returned to Compliance	04-APR-2025	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	1805333	Returned to Compliance	01-APR-2025	30-JUN-2025	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1805326	Returned to Compliance	01-APR-2025	30-JUN-2025	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	1805327	Returned to Compliance	01-APR-2025	30-JUN-2025	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	1805332	Returned to Compliance	01-APR-2025	30-JUN-2025	No
RPT	Report Sample Result/Fail Monitor (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	1805335	Returned to Compliance	11-MAR-2025	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	1805325	Returned to Compliance	01-JAN-2025	31-MAR-2025	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1805324	Returned to Compliance	01-JAN-2025	31-MAR-2025	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1805320	Returned to Compliance	01-OCT-2024	31-DEC-2024	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	1805321	Returned to Compliance	01-OCT-2024	31-DEC-2024	Yes
RPT	Report Sample Result/Fail Monitor (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	1805322	Returned to Compliance	01-OCT-2024	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1805318	Returned to Compliance	05-MAR-2022	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1805319	Returned to Compliance	21-JAN-2022	-	No
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	1805317	Returned to Compliance	01-JAN-2022	31-MAR-2022	Yes
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	1805315	Returned to Compliance	01-OCT-2021	31-DEC-2021	Yes
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	1805316	Returned to Compliance	01-JUL-2021	30-SEP-2021	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1805310	Returned to Compliance	01-APR-2021	30-JUN-2021	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1805311	Returned to Compliance	31-JAN-2021	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1805312	Returned to Compliance	14-JAN-2021	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1805309	Returned to Compliance	01-OCT-2020	31-DEC-2020	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	1805307	Returned to Compliance	01-APR-2019	30-JUN-2019	Yes
TT	Single Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	1805305	Returned to Compliance	01-FEB-2019	28-FEB-2019	Yes
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	1805308	Returned to Compliance	01-JAN-2019	31-DEC-2019	No
MR	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	1805306	Returned to Compliance	01-JAN-2019	-	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	1805303	Returned to Compliance	01-JAN-2018	31-JAN-2018	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	1805304	Returned to Compliance	01-JAN-2018	31-MAR-2018	No
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	1805302	Returned to Compliance	01-JAN-2016	31-JAN-2016	Yes
TT	Single Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	1805301	Returned to Compliance	01-JAN-2016	31-JAN-2016	Yes
MR	Monitoring, Regular	Synthetic Organic Chemicals	BHC-GAMMA	4183290	Known	01-JAN-1987	31-DEC-1987	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Methoxychlor	4183390	Known	01-JAN-1987	31-DEC-1987	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	4183590	Known	01-JAN-1987	31-DEC-1987	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	4183690	Known	01-JAN-1987	31-DEC-1987	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endrin	3690	Returned to Compliance	01-JAN-1987	31-DEC-1987	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	BHC-GAMMA	4190	Returned to Compliance	01-JAN-1987	31-DEC-1987	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Methoxychlor	3790	Returned to Compliance	01-JAN-1987	31-DEC-1987	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Toxaphene	3890	Returned to Compliance	01-JAN-1987	31-DEC-1987	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	4090	Returned to Compliance	01-JAN-1987	31-DEC-1987	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Toxaphene	4183490	Known	01-JAN-1987	31-DEC-1987	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endrin	4183190	Known	01-JAN-1987	31-DEC-1987	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	3990	Returned to Compliance	01-JAN-1987	31-DEC-1987	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	3289	Known	31-DEC-1986	30-DEC-1987	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	2712689	Known	31-DEC-1986	30-DEC-1987	No
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	2889	Known	31-DEC-1986	30-DEC-1987	No
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	2712189	Known	31-DEC-1986	30-DEC-1987	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
728249	1805320	SOX	State Compliance achieved	03-NOV-2025	State	11/3/2025 is the 4Q sampling date in which LRAA < MCL (EC)
728249	1805326	SOX	State Compliance achieved	03-NOV-2025	State	11/3/2025 is the 4Q sampling date in which LRAA < MCL (EC)
728249	1805324	SOX	State Compliance achieved	03-NOV-2025	State	11/3/2025 is the 4Q sampling date in which LRAA < MCL (EC)
728249	1805337	SOX	State Compliance achieved	03-NOV-2025	State	11/3/2025 is the 4Q sampling date in which LRAA < MCL (EC)
728245	1805339	SIF	State Public Notification received	23-OCT-2025	State	Created by eCERT
728244	1805338	SIF	State Public Notification received	23-OCT-2025	State	Created by eCERT
728232	1805335	SIF	State Public Notification received	04-SEP-2025	State	Created by eCERT
728237	1805327	SOX	State Compliance achieved	04-AUG-2025	State	RTC is achieved when the quarterly locational running annual average (LRAA) for TTHM and/or HAA5 are less than or equal to their maximum contaminant levels (MCLs). LRAA < MCL for Q3 sample on 8/4/2025 (EC)
728237	1805325	SOX	State Compliance achieved	04-AUG-2025	State	RTC is achieved when the quarterly locational running annual average (LRAA) for TTHM and/or HAA5 are less than or equal to their maximum contaminant levels (MCLs). LRAA < MCL for Q3 sample on 8/4/2025 (EC)
728237	1805321	SOX	State Compliance achieved	04-AUG-2025	State	RTC is achieved when the quarterly locational running annual average (LRAA) for TTHM and/or HAA5 are less than or equal to their maximum contaminant levels (MCLs). LRAA < MCL for Q3 sample on 8/4/2025 (EC)
728220	1805333	SIE	State Public Notification requested	29-JUL-2025	State	-
728220	1805332	SIE	State Public Notification requested	29-JUL-2025	State	-
728210	1805328	SOX	State Compliance achieved	25-JUN-2025	State	-
728211	1805329	SOX	State Compliance achieved	25-JUN-2025	State	-
728213	1805331	SOX	State Compliance achieved	18-APR-2025	State	-
728212	1805330	SOX	State Compliance achieved	18-APR-2025	State	-
728203	1805322	SIF	State Public Notification received	09-APR-2025	State	Created by eCERT
728178	1805315	SOX	State Compliance achieved	01-JUN-2022	State	-
728178	1805317	SOX	State Compliance achieved	01-JUN-2022	State	-
728178	1805316	SOX	State Compliance achieved	01-JUN-2022	State	-
728175	1805319	SFL	State Administrative/Compliance Order without penalty issued	06-MAY-2022	State	-
728173	1805318	SOX	State Compliance achieved	23-MAR-2022	State	-
728165	1805310	SIF	State Public Notification received	12-OCT-2021	State	Created by eCERT
728156	1805311	SOX	State Compliance achieved	08-JUN-2021	State	-
728155	1805312	SOX	State Compliance achieved	08-JUN-2021	State	-
728149	1805308	SIF	State Public Notification received	05-APR-2021	State	Created by eCERT
728148	1805309	SIF	State Public Notification received	31-MAR-2021	State	Created by eCERT
728134	1805307	SIF	State Public Notification received	07-OCT-2019	State	Created by eCERT
728142	1805306	SOX	State Compliance achieved	20-JUN-2019	State	-
728128	1805305	SIF	State Public Notification received	09-APR-2019	State	Created by eCERT
728127	1805303	SIF	State Public Notification received	09-APR-2019	State	Created by eCERT
728126	1805304	SIF	State Public Notification received	09-APR-2019	State	Created by eCERT
728111	1805301	SOX	State Compliance achieved	03-MAR-2016	State	-
728112	1805302	SOX	State Compliance achieved	03-MAR-2016	State	-
726006	2285	SOX	State Compliance achieved	01-MAR-2006	State	SOX MIGRATION BY SJ ON 020907
726706	2689	SOX	State Compliance achieved	01-MAR-2006	State	SOX MIGRATION BY SJ ON 020907
728106	1585	SOX	State Compliance achieved	01-MAR-2006	State	SOX MIGRATION BY SJ ON 021507
726606	1485	SOX	State Compliance achieved	01-MAR-2006	State	SOX MIGRATION BY SJ ON 020907
726206	2085	SOX	State Compliance achieved	01-MAR-2006	State	SOX MIGRATION BY SJ ON 020907
726506	1685	SOX	State Compliance achieved	01-MAR-2006	State	SOX MIGRATION BY SJ ON 020907
726406	1885	SOX	State Compliance achieved	01-MAR-2006	State	SOX MIGRATION BY SJ ON 020907
726106	2185	SOX	State Compliance achieved	01-MAR-2006	State	SOX MIGRATION BY SJ ON 020907
726306	1985	SOX	State Compliance achieved	01-MAR-2006	State	SOX MIGRATION BY SJ ON 020907
727205	585	SOX	State Compliance achieved	06-APR-2005	State	SOX MIGRATION BY SJ ON 021207
727105	685	SOX	State Compliance achieved	06-APR-2005	State	SOX MIGRATION BY SJ ON 021207
727305	985	SOX	State Compliance achieved	06-APR-2005	State	SOX MIGRATION BY SJ ON 021207
727005	1085	SOX	State Compliance achieved	06-APR-2005	State	SOX MIGRATION BY SJ ON 021207
727505	4190	SOX	State Compliance achieved	06-APR-2005	State	SOX MIGRATION BY SJ ON 021207
727805	4090	SOX	State Compliance achieved	06-APR-2005	State	SOX MIGRATION BY SJ ON 021207
727905	3990	SOX	State Compliance achieved	06-APR-2005	State	SOX MIGRATION BY SJ ON 021207

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
LAKE TILLERY	39290	Yes	Intake	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	54956	No	Distribution System/Zone	-	-	Active
STORAGE_CLEAR_WELL	104	No	Storage	-	-	Active
STORAGE_GROUND_1	1141	No	Storage	-	-	Active
STORAGE_ELEVATED_6	764	No	Storage	-	-	Active
TREATMENT_PLT_MONTGOMERY WTP	9631	No	Treatment Plant	-	-	Active

1 - 6 of 6

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TREATMENT_PLT_MONTGOMERY WTP	9631	Coagulation	Disinfection by-products control
TREATMENT_PLT_MONTGOMERY WTP	9631	Filtration, Rapid Sand	Disinfection by-products control
TREATMENT_PLT_MONTGOMERY WTP	9631	Flocculation	Disinfection by-products control
TREATMENT_PLT_MONTGOMERY WTP	9631	Rapid Mix	Disinfection by-products control
TREATMENT_PLT_MONTGOMERY WTP	9631	Sedimentation	Disinfection by-products control
TREATMENT_PLT_MONTGOMERY WTP	9631	pH Adjustment, Post	Disinfection by-products control
TREATMENT_PLT_MONTGOMERY WTP	9631	pH Adjustment, Pre	Disinfection by-products control
TREATMENT_PLT_MONTGOMERY WTP	9631	Inhibitor, Orthophosphate	Corrosion control
TREATMENT_PLT_MONTGOMERY WTP	9631	pH Adjustment	Corrosion control
TREATMENT_PLT_MONTGOMERY WTP	9631	pH Adjustment, Post	Corrosion control
TREATMENT_PLT_MONTGOMERY WTP	9631	Gaseous Chlorination, Post	Disinfection
TREATMENT_PLT_MONTGOMERY WTP	9631	Gaseous Chlorination, Pre	Disinfection
TREATMENT_PLT_MONTGOMERY WTP	9631	Filtration, Rapid Sand	Iron removal
TREATMENT_PLT_MONTGOMERY WTP	9631	Gaseous Chlorination, Pre	Iron removal
TREATMENT_PLT_MONTGOMERY WTP	9631	Sedimentation	Iron removal
TREATMENT_PLT_MONTGOMERY WTP	9631	Sludge Treatment	Iron removal
TREATMENT_PLT_MONTGOMERY WTP	9631	pH Adjustment	Iron removal
TREATMENT_PLT_MONTGOMERY WTP	9631	pH Adjustment, Pre	Iron removal
TREATMENT_PLT_MONTGOMERY WTP	9631	Coagulation	Inorganics removal
TREATMENT_PLT_MONTGOMERY WTP	9631	Filtration, Rapid Sand	Inorganics removal
TREATMENT_PLT_MONTGOMERY WTP	9631	Flocculation	Inorganics removal
TREATMENT_PLT_MONTGOMERY WTP	9631	Rapid Mix	Inorganics removal
TREATMENT_PLT_MONTGOMERY WTP	9631	Sedimentation	Inorganics removal
TREATMENT_PLT_MONTGOMERY WTP	9631	Sludge Treatment	Inorganics removal
TREATMENT_PLT_MONTGOMERY WTP	9631	pH Adjustment, Pre	Inorganics removal
TREATMENT_PLT_MONTGOMERY WTP	9631	Filtration, Rapid Sand	Manganese removal
TREATMENT_PLT_MONTGOMERY WTP	9631	Gaseous Chlorination, Pre	Manganese removal
TREATMENT_PLT_MONTGOMERY WTP	9631	Sludge Treatment	Manganese removal
TREATMENT_PLT_MONTGOMERY WTP	9631	pH Adjustment	Manganese removal
TREATMENT_PLT_MONTGOMERY WTP	9631	pH Adjustment, Pre	Manganese removal
TREATMENT_PLT_MONTGOMERY WTP	9631	Coagulation	Organics removal
TREATMENT_PLT_MONTGOMERY WTP	9631	Filtration, Rapid Sand	Organics removal
TREATMENT_PLT_MONTGOMERY WTP	9631	Flocculation	Organics removal
TREATMENT_PLT_MONTGOMERY WTP	9631	Gaseous Chlorination, Pre	Organics removal
TREATMENT_PLT_MONTGOMERY WTP	9631	Sedimentation	Organics removal
TREATMENT_PLT_MONTGOMERY WTP	9631	Coagulation	Particulate removal
TREATMENT_PLT_MONTGOMERY WTP	9631	Filtration, Rapid Sand	Particulate removal
TREATMENT_PLT_MONTGOMERY WTP	9631	Flocculation	Particulate removal
TREATMENT_PLT_MONTGOMERY WTP	9631	Rapid Mix	Particulate removal
TREATMENT_PLT_MONTGOMERY WTP	9631	Sedimentation	Particulate removal
TREATMENT_PLT_MONTGOMERY WTP	9631	Sludge Treatment	Particulate removal
TREATMENT_PLT_MONTGOMERY WTP	9631	pH Adjustment, Pre	Particulate removal
TREATMENT_PLT_MONTGOMERY WTP	9631	Gaseous Chlorination, Pre	Taste / odor control
TREATMENT_PLT_MONTGOMERY WTP	9631	Fluoridation	Other

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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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