Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	MT0000240
PWS Name	HARLOWTON CITY OF
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water purchased
Primacy Type	State
Is Wholesaler?	No
Population Served	1050
County Served	Wheatland

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	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	50533	Returned to Compliance	01-JUL-2025	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	50531	Returned to Compliance	01-OCT-2024	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	50530	Returned to Compliance	01-JUL-2024	-	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	50529	Returned to Compliance	01-JUN-2024	30-JUN-2024	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	50528	Returned to Compliance	01-JUL-2023	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	50526	Returned to Compliance	01-JUL-2017	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	50210	Returned to Compliance	01-JUL-2009	-	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate-Nitrite	50310	Returned to Compliance	01-JAN-2009	31-DEC-2009	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate-Nitrite	50510	Returned to Compliance	01-JAN-2009	31-DEC-2009	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate-Nitrite	50410	Returned to Compliance	01-JAN-2009	31-DEC-2009	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	49108	Returned to Compliance	01-JUL-2008	-	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	49209	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	49008	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	50515	Known	01-JAN-2008	31-DEC-2010	No
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	46407	Returned to Compliance	01-JAN-2006	30-JUN-2006	No
MR	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	Lead and Copper Rule	45606	Returned to Compliance	01-JAN-2006	-	No
MR	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	Lead and Copper Rule	45405	Returned to Compliance	01-JUL-2005	-	No
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	44905	Returned to Compliance	01-JAN-2005	30-JUN-2005	No
MR	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	Lead and Copper Rule	44505	Returned to Compliance	01-JAN-2005	-	No
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	42905	Returned to Compliance	01-JUL-2004	31-DEC-2004	No
MR	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	Lead and Copper Rule	44405	Returned to Compliance	01-JUL-2004	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	44805	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	44705	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	42405	Returned to Compliance	01-JAN-2004	30-JUN-2004	No
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	43405	Returned to Compliance	01-JUL-2003	31-DEC-2003	No
MR	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	Lead and Copper Rule	42204	Returned to Compliance	01-JUL-2003	-	No
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	43905	Returned to Compliance	01-JAN-2003	30-JUN-2003	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	44605	Returned to Compliance	01-OCT-2002	-	No
TT	OCCT/SOWT Study/Recommendation	Lead and Copper Rule	Lead and Copper Rule	45707	Returned to Compliance	01-JAN-1999	-	Yes
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	484	Known	01-JUL-1984	30-SEP-1984	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	384	Known	01-JUL-1984	30-SEP-1984	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	584	Known	01-JUL-1984	30-SEP-1984	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	184	Known	01-JUL-1984	30-SEP-1984	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	984	Known	01-JUL-1984	30-SEP-1984	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	884	Known	01-JUL-1984	30-SEP-1984	No
MR	Monitoring, Regular	Inorganic Chemicals	Mercury	784	Known	01-JUL-1984	30-SEP-1984	No
MR	Monitoring, Regular	Inorganic Chemicals	Barium	284	Known	01-JUL-1984	30-SEP-1984	No

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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
5311539	50530	SOX	State Compliance achieved	18-JUL-2025	State	7/21/2025 2023 CCR was received on 7/18/2025, KK;
5311546	50533	SOX	State Compliance achieved	18-JUL-2025	State	7/21/2025 2024 CCR received on 7/18/2025, KK;
5311541	50531	SOX	State Compliance achieved	01-OCT-2024	State	8/26/2025 CCR Cert Form received on 8/22/2025. KK;
5311536	50529	SIF	State Public Notification received	30-JUL-2024	State	-
5311533	50528	SOX	State Compliance achieved	18-JUL-2023	State	2022 CCR received on 7/18/23-MRF(7/18/23)
5311527	50526	SOX	State Compliance achieved	24-JUL-2017	State	7/24/2017 CCR received, SJP;
5311511	50310	SOX	State Compliance achieved	28-JAN-2010	State	Samples received 3/4/2010. LRA 3/5/2010
5311511	50510	SOX	State Compliance achieved	28-JAN-2010	State	Samples received 3/4/2010. LRA 3/5/2010
5311511	50410	SOX	State Compliance achieved	28-JAN-2010	State	Samples received 3/4/2010. LRA 3/5/2010
5310910	50210	SOX	State Compliance achieved	28-DEC-2009	State	CCR/CDF received 12/22/2009.EK.
5309909	49008	SOX	State Compliance achieved	28-NOV-2008	State	11/05/2008
5309909	49209	SOX	State Compliance achieved	28-NOV-2008	State	11/05/2008
5309608	49108	SOX	State Compliance achieved	13-AUG-2008	State	CCR late.
5307507	45707	SOX	State Compliance achieved	24-JUN-2008	State	-
5306205	45606	SOX	State Compliance achieved	04-SEP-2007	State	-
5304605	44605	SOX	State Compliance achieved	04-SEP-2007	State	-
5304605	44505	SOX	State Compliance achieved	04-SEP-2007	State	-
5304605	44405	SOX	State Compliance achieved	04-SEP-2007	State	-
5306205	42905	SOX	State Compliance achieved	04-SEP-2007	State	-
5306205	45405	SOX	State Compliance achieved	04-SEP-2007	State	-
5308907	44905	SOX	State Compliance achieved	09-MAR-2007	State	1/16/07
5308907	43905	SOX	State Compliance achieved	09-MAR-2007	State	1/16/07
5308907	43405	SOX	State Compliance achieved	09-MAR-2007	State	1/16/07
5308907	42405	SOX	State Compliance achieved	09-MAR-2007	State	1/16/07
5308907	46407	SOX	State Compliance achieved	09-MAR-2007	State	1/16/07
5307107	42204	SOX	State Compliance achieved	12-OCT-2006	State	99-01 lead ALE, required to sample WQP.
5306706	44805	SOX	State Compliance achieved	03-APR-2006	State	samples taken 8/17/06
5306706	44705	SOX	State Compliance achieved	03-APR-2006	State	samples taken 8/17/06

1 - 28 of 28

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
CONSECUTIVE CONNECTION FROM 5109	24313	Yes	Consecutive Connection	Ground water	Permanent	Active
WELL 3 THOMPSON GWIC 20848	4680	Yes	Well	Ground water	Permanent	Inactive
WELL 1 CENTRAL GWIC 20853	4431	Yes	Well	Ground water	Permanent	Inactive
WELL 4 GRAVES	4030	Yes	Well	Ground water	Permanent	Inactive
WELL 2 PRICHARD GWIC 20846	3355	Yes	Well	Ground water	Permanent	Inactive
DISTRIBUTION SYSTEM	10220	No	Distribution System/Zone	-	-	Active
PUMP FACILITY	20059	No	Pump Facility	-	-	Active
STORAGE FACILITY 590,000 GAL	20058	No	Storage	-	-	Active
STORAGE FACILITY 1	1999	No	Storage	-	-	Inactive
TREATMENT PLANT FOR CORROSION CONTROL CC	24314	No	Treatment Plant	-	-	Active
TP FOR WELL 3	2677	No	Treatment Plant	-	-	Inactive
TP FOR WELL 2	2755	No	Treatment Plant	-	-	Inactive
TP FOR WELL 1	3117	No	Treatment Plant	-	-	Inactive

1 - 13 of 13

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TREATMENT PLANT FOR CORROSION CONTROL CC	24314	Inhibitor, Silicate	Corrosion control
TP FOR WELL 3	2677	Gaseous Chlorination, Post	Disinfection
TP FOR WELL 3	2677	Inhibitor, Silicate	Corrosion control
TP FOR WELL 2	2755	Inhibitor, Silicate	Corrosion control
TP FOR WELL 2	2755	Gaseous Chlorination, Post	Disinfection
TP FOR WELL 1	3117	Gaseous Chlorination, Post	Disinfection
TP FOR WELL 1	3117	Inhibitor, Silicate	Corrosion control

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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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