Safe Drinking Water Information System (SDWIS) Federal Reporting Services

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PWS ID	MT0004082
PWS Name	RIVER ROCK COUNTY WATER AND SEWER DIST
PWS Type	Community water system
Owner Type	Private
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	4200
County Served	Gallatin

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	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	6595	Returned to Compliance	01-OCT-2024	-	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	6598	Returned to Compliance	01-JAN-2024	31-DEC-2024	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	6599	Returned to Compliance	01-JAN-2024	31-DEC-2024	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	6590	Returned to Compliance	01-JAN-2023	31-DEC-2023	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	6591	Returned to Compliance	01-JAN-2023	31-DEC-2023	No
MR	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	6578	Returned to Compliance	30-DEC-2021	-	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate-Nitrite	6579	Returned to Compliance	01-JAN-2021	31-DEC-2021	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	6575	Returned to Compliance	31-AUG-2020	30-AUG-2021	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	6576	Returned to Compliance	31-AUG-2020	30-AUG-2021	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Diquat	6584	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	ETHYLENE DIBROMIDE	6589	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Glyphosate	6586	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endothall	6585	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Total Polychlorinated Biphenyls (PCB)	6587	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Inorganic Chemicals	CYANIDE	6583	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Inorganic Chemicals	Asbestos	6593	Known	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	1,2-DIBROMO-3-CHLOROPROPANE	6588	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	6571	Returned to Compliance	31-AUG-2019	30-AUG-2020	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	6570	Returned to Compliance	31-AUG-2019	30-AUG-2020	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	6564	Returned to Compliance	31-AUG-2018	30-AUG-2019	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	6563	Returned to Compliance	31-AUG-2018	30-AUG-2019	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	6551	Returned to Compliance	01-JUL-2017	-	No
MR	Monitoring, Regular	Inorganic Chemicals	Antimony, Total	6567	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	6544	Returned to Compliance	01-JUL-2016	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	6539	Returned to Compliance	01-JUL-2015	-	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	6540	Returned to Compliance	01-SEP-2014	31-AUG-2015	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	6541	Returned to Compliance	01-SEP-2014	31-AUG-2015	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	6516	Returned to Compliance	01-JUL-2012	-	No
MR	Monitoring, Regular	Inorganic Chemicals	Asbestos	6536	Known	01-JAN-2011	31-DEC-2013	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	6510	Returned to Compliance	01-JUL-2010	-	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	5908	Returned to Compliance	01-JUN-2008	30-JUN-2008	Yes
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	5807	Returned to Compliance	01-JUL-2006	-	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate-Nitrite	5707	Returned to Compliance	01-JAN-2006	31-DEC-2006	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate-Nitrite	5607	Returned to Compliance	01-JAN-2006	31-DEC-2006	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	5105	Returned to Compliance	01-SEP-2005	30-SEP-2005	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	2105	Returned to Compliance	01-OCT-2004	31-OCT-2004	Yes
MR	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	Lead and Copper Rule	4805	Returned to Compliance	01-JUL-2004	-	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	1203	Returned to Compliance	01-AUG-2003	31-AUG-2003	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	1103	Returned to Compliance	01-JUL-2003	31-JUL-2003	Yes
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	802	Returned to Compliance	01-AUG-2002	31-AUG-2002	No
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	2805	Returned to Compliance	01-JUL-2002	31-DEC-2002	No
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	3305	Returned to Compliance	01-JAN-2002	30-JUN-2002	No
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	2605	Returned to Compliance	01-JUL-2001	31-DEC-2001	No
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	2705	Returned to Compliance	01-JUL-2001	31-DEC-2001	No
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	2505	Returned to Compliance	01-JUL-2001	31-DEC-2001	No
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	3805	Returned to Compliance	01-JAN-2001	30-JUN-2001	No
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	4205	Returned to Compliance	01-JAN-2001	30-JUN-2001	No
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	3905	Returned to Compliance	01-JAN-2001	30-JUN-2001	No
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	4005	Returned to Compliance	01-JAN-2001	30-JUN-2001	No
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	4105	Returned to Compliance	01-JAN-2001	30-JUN-2001	No

1 - 50 of 56

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
5383664	6578	SOX	State Compliance achieved	29-OCT-2025	State	CN received via email on 10/29/2025 - JD 10/29/2025
5383702	6595	SOX	State Compliance achieved	25-SEP-2025	State	SOX'd with samples collected on 09/25/2025 - JD 10/16/2025
5383711	6598	SOX	State Compliance achieved	23-JAN-2025	State	Sampled 08/22/2025, VL SOXd-PMT 9/17/2025
5383711	6599	SOX	State Compliance achieved	23-JAN-2025	State	Sampled 08/22/2025, VL SOXd-PMT 9/17/2025
5383694	6593	SIE	State Public Notification requested	07-AUG-2024	State	-
5383685	6588	SOX	State Compliance achieved	07-NOV-2023	State	-
5383685	6583	SOX	State Compliance achieved	07-NOV-2023	State	-
5383685	6584	SOX	State Compliance achieved	07-NOV-2023	State	-
5383685	6585	SOX	State Compliance achieved	07-NOV-2023	State	-
5383685	6589	SOX	State Compliance achieved	07-NOV-2023	State	-
5383685	6587	SOX	State Compliance achieved	07-NOV-2023	State	-
5383685	6586	SOX	State Compliance achieved	07-NOV-2023	State	-
5383688	6590	SOX	State Compliance achieved	18-OCT-2023	State	Sampled 08/22/2025, VL SOXd-PMT 9/17/2025
5383688	6591	SOX	State Compliance achieved	18-OCT-2023	State	Sampled 08/22/2025, VL SOXd-PMT 9/17/2025
5383682	6567	SOX	State Compliance achieved	22-DEC-2022	State	-
5383667	6579	SOX	State Compliance achieved	29-SEP-2022	State	10/14/2022 Violation SOXed with sample taken 9/292022, SJP;
5383657	6576	SIE	State Public Notification requested	20-OCT-2021	State	-
5383657	6575	SIE	State Public Notification requested	20-OCT-2021	State	-
5383624	6564	SOX	State Compliance achieved	30-AUG-2021	State	Brian has the comment of "SOX'D WITH 8/30/21 SAMPLE SET", but never actually SOXed the violation. SOXing it now-MRF(5/19/22)
5383624	6563	SOX	State Compliance achieved	30-AUG-2021	State	Brian has the comment of "SOX'D WITH 8/30/21 SAMPLE SET", but never actually SOXed the violation. SOXing it now-MRF(5/19/22)
5383643	6571	SOX	State Compliance achieved	30-AUG-2021	State	-
5383643	6570	SOX	State Compliance achieved	30-AUG-2021	State	-
5383542	6541	SOX	State Compliance achieved	24-AUG-2017	State	-
5383542	6540	SOX	State Compliance achieved	24-AUG-2017	State	-
5383577	6551	SOX	State Compliance achieved	20-JUL-2017	State	The system had collected the samples on June 28-29, 2017. The data wasn't received until July 20, 2017. The violation would be a reporting violation. Using date that the data was received to SOX the violation - GRM(01/15/2019)
5383549	6544	SOX	State Compliance achieved	30-SEP-2016	State	system collected Lead and copper samples on September 28-30, 2016. SOXing the violation using September 30, 2016. GRM(01/15/2019)
5383539	6539	SOX	State Compliance achieved	16-JUL-2015	State	CCR received 7/16/2015 SJP;
5383533	6536	SIE	State Public Notification requested	24-JAN-2014	State	-
5383522	6516	SOX	State Compliance achieved	30-JUL-2012	State	-
5383515	6510	SOX	State Compliance achieved	24-SEP-2010	State	CCR 07/27/2010 L.S.
5383511	5908	SOX	State Compliance achieved	07-MAY-2010	State	6 months no MCL or MR violations. LRA 5/7/2010
5383511	5105	SOX	State Compliance achieved	07-MAY-2010	State	6 months no MCL or MR violations. LRA 5/7/2010
5381307	5807	SOX	State Compliance achieved	08-MAR-2007	State	Received ccr and cdf.
5381107	5607	SOX	State Compliance achieved	02-FEB-2007	State	12/28/06
5381107	5707	SOX	State Compliance achieved	02-FEB-2007	State	12/28/06
5380606	4805	SOX	State Compliance achieved	06-JUN-2006	State	-
5382106	3305	SOX	State Compliance achieved	05-OCT-2005	State	-
5382106	2805	SOX	State Compliance achieved	05-OCT-2005	State	-
5382106	2705	SOX	State Compliance achieved	05-OCT-2005	State	-
5382106	2605	SOX	State Compliance achieved	05-OCT-2005	State	-
5382106	2505	SOX	State Compliance achieved	05-OCT-2005	State	-
5382106	3805	SOX	State Compliance achieved	05-OCT-2005	State	-
5382106	3905	SOX	State Compliance achieved	05-OCT-2005	State	-
5382106	4205	SOX	State Compliance achieved	05-OCT-2005	State	-
5382106	4305	SOX	State Compliance achieved	05-OCT-2005	State	-
5382106	4405	SOX	State Compliance achieved	05-OCT-2005	State	-
5382106	4505	SOX	State Compliance achieved	05-OCT-2005	State	-
5382106	4605	SOX	State Compliance achieved	05-OCT-2005	State	-
5382106	4705	SOX	State Compliance achieved	05-OCT-2005	State	-
5382106	4005	SOX	State Compliance achieved	05-OCT-2005	State	-

1 - 50 of 56

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WELL 3 GWIC 283159	21397	Yes	Well	Ground water	Permanent	Active
WELL 1 1979 GWIC 90879	7053	Yes	Well	Ground water	Permanent	Active
WELL 2 GWIC 188865	6568	Yes	Well	Ground water	Permanent	Active
COMMON HEADER WELLS 1 2	18274	No	Common Headers	-	-	Active
DISTRIBUTION SYSTEM	8341	No	Distribution System/Zone	-	-	Active
PUMP FACILITY	18275	No	Pump Facility	-	-	Active
STORAGE FACILITY 1 250,000 GAL	12223	No	Storage	-	-	Active
TP FOR WELL 1 2 3	13864	No	Treatment Plant	-	-	Active

1 - 8 of 8

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TP FOR WELL 1 2 3	13864	Hypochlorination, Post	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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