Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	AZ0411018
PWS Name	MAMMOTH TOWN OF
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	1181
County Served	Pinal

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	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	6523	Returned to Compliance	20-NOV-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	6524	Returned to Compliance	16-NOV-2025	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	6522	Returned to Compliance	02-OCT-2025	-	No
RPT	Notification, Known or Potential LSL	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	6525	Open	02-JUL-2025	-	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	6518	Returned to Compliance	01-JUL-2024	30-SEP-2024	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	6519	Returned to Compliance	01-JUL-2024	30-SEP-2024	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	6517	Returned to Compliance	01-JUN-2024	30-JUN-2024	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	6514	Returned to Compliance	02-OCT-2023	-	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	6521	Returned to Compliance	01-JUL-2023	30-SEP-2023	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	6520	Returned to Compliance	01-JUL-2023	30-SEP-2023	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	6513	Returned to Compliance	02-OCT-2021	-	No
RPT	Report Sample Result/Fail Monitor (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	6512	Returned to Compliance	01-APR-2017	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	6510	Returned to Compliance	01-OCT-2016	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	6508	Returned to Compliance	01-JUL-2016	30-SEP-2016	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	6509	Returned to Compliance	01-JUL-2016	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	6487	Returned to Compliance	01-OCT-2014	31-DEC-2014	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	6474	Returned to Compliance	01-SEP-2014	30-SEP-2014	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	6473	Returned to Compliance	01-JUL-2014	31-JUL-2014	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	6478	Returned to Compliance	01-JUL-2014	30-SEP-2014	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	6469	Returned to Compliance	01-APR-2014	30-APR-2014	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	6503	Returned to Compliance	01-APR-2014	30-JUN-2014	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	6465	Returned to Compliance	01-MAR-2014	31-MAR-2014	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	6500	Returned to Compliance	01-JAN-2014	31-MAR-2014	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	6497	Returned to Compliance	01-OCT-2013	31-DEC-2013	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	6463	Returned to Compliance	01-JUL-2013	31-JUL-2013	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	6464	Returned to Compliance	01-JUL-2013	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	6494	Returned to Compliance	01-APR-2013	30-JUN-2013	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	6457	Returned to Compliance	01-APR-2013	30-APR-2013	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	6446	Returned to Compliance	01-JAN-2013	31-JAN-2013	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	6491	Returned to Compliance	01-JAN-2013	31-MAR-2013	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	6453	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	6444	Returned to Compliance	01-OCT-2012	-	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	6445	Returned to Compliance	01-OCT-2012	31-OCT-2012	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	6442	Returned to Compliance	01-SEP-2012	30-SEP-2012	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	6443	Returned to Compliance	01-JUL-2012	-	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	6441	Returned to Compliance	01-JUL-2012	31-JUL-2012	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	6450	Returned to Compliance	01-JUL-2012	30-SEP-2012	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	6447	Returned to Compliance	01-APR-2012	30-JUN-2012	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	6460	Returned to Compliance	01-JUL-2010	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	6459	Returned to Compliance	01-JUL-2009	-	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	6433	Returned to Compliance	01-JUL-2009	31-JUL-2009	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	6458	Returned to Compliance	01-JUL-2008	-	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	6421	Returned to Compliance	01-DEC-2007	31-DEC-2007	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	6411	Returned to Compliance	01-MAR-2007	31-MAR-2007	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	6423	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	6422	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	6410	Returned to Compliance	01-NOV-2006	30-NOV-2006	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	6415	Returned to Compliance	01-JAN-2006	31-DEC-2006	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	6414	Returned to Compliance	01-JAN-2006	31-DEC-2006	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	6106	Returned to Compliance	01-NOV-2005	30-NOV-2005	No

1 - 50 of 101

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
4558	6524	SOX	State Compliance achieved	29-DEC-2025	State	PWS performed public notice late, allowing violation to be returned to compliance. GE1 01/05/2026
4556	6523	SOX	State Compliance achieved	29-DEC-2025	State	PWS performed public notice late, allowing violation to be returned to compliance. GE1 01/05/2026
4550	6522	SOX	State Compliance achieved	10-OCT-2025	State	-
4547	6521	SOX	State Compliance achieved	01-AUG-2025	State	System subsequently submitted sample on 8/01/25. nra 8.4.25
4548	6519	SOX	State Compliance achieved	01-AUG-2025	State	System subsequently submitted sample on 8/01/25. nra 8.4.25
4548	6518	SOX	State Compliance achieved	01-AUG-2025	State	System subsequently submitted sample on 8/01/25. nra 8.4.25
4547	6520	SOX	State Compliance achieved	01-AUG-2025	State	System subsequently submitted sample on 8/01/25. nra 8.4.25
4540	6517	SOX	State Compliance achieved	05-AUG-2024	State	-
4533	6514	SOX	State Compliance achieved	09-APR-2024	State	-
4528	6513	SIA	State Violation/Reminder Notice	25-OCT-2021	State	-
4525	6512	SIA	State Violation/Reminder Notice	16-MAY-2017	State	-
4521	6510	SIA	State Violation/Reminder Notice	03-FEB-2017	State	-
4522	6509	SIA	State Violation/Reminder Notice	03-FEB-2017	State	-
4524	6508	SOX	State Compliance achieved	20-JAN-2017	State	3Q16 reported late 01/20/2017 - klb 02/09/17
4520	6478	SOX	State Compliance achieved	19-MAR-2015	State	-
4520	6487	SOX	State Compliance achieved	19-MAR-2015	State	-
4520	6503	SOX	State Compliance achieved	19-MAR-2015	State	-
4513	6474	SOX	State Compliance achieved	01-DEC-2014	State	-
4510	6473	SOX	State Compliance achieved	18-SEP-2014	State	-
4509	6469	SOX	State Compliance achieved	26-JUN-2014	State	-
4519	6497	SOX	State Compliance achieved	05-MAY-2014	State	-
4519	6500	SOX	State Compliance achieved	05-MAY-2014	State	-
4507	6465	SOX	State Compliance achieved	02-MAY-2014	State	-
4503	6463	SOX	State Compliance achieved	10-OCT-2013	State	-
4503	6494	SOX	State Compliance achieved	10-OCT-2013	State	-
4504	6443	SOX	State Compliance achieved	21-AUG-2013	State	-
4505	6444	SOX	State Compliance achieved	21-AUG-2013	State	-
4504	6464	SOX	State Compliance achieved	21-AUG-2013	State	-
4496	6453	SIA	State Violation/Reminder Notice	12-AUG-2013	State	CASE 142892; FAILURE TO MAINTAIN IN PROPER OPERATING CONDITION
4496	6447	SIA	State Violation/Reminder Notice	12-AUG-2013	State	CASE 142892; FAILURE TO MAINTAIN IN PROPER OPERATING CONDITION
4496	6450	SIA	State Violation/Reminder Notice	12-AUG-2013	State	CASE 142892; FAILURE TO MAINTAIN IN PROPER OPERATING CONDITION
4498	6491	SOX	State Compliance achieved	31-JUL-2013	State	-
4494	6457	SOX	State Compliance achieved	25-JUN-2013	State	-
4492	6446	SOX	State Compliance achieved	13-MAY-2013	State	-
4487	6445	SOX	State Compliance achieved	03-DEC-2012	State	-
4487	6441	SOX	State Compliance achieved	03-DEC-2012	State	-
4487	6442	SOX	State Compliance achieved	03-DEC-2012	State	-
4483	6433	SOX	State Compliance achieved	14-JUL-2011	State	-
4499	6460	SOX	State Compliance achieved	04-AUG-2010	State	-
4497	6459	SOX	State Compliance achieved	24-JUL-2009	State	-
4476	6421	SOX	State Compliance achieved	16-MAR-2009	State	-
4472	6412	SOX	State Compliance achieved	03-SEP-2008	State	-
4472	6413	SOX	State Compliance achieved	03-SEP-2008	State	-
4472	6414	SOX	State Compliance achieved	03-SEP-2008	State	-
4472	6415	SOX	State Compliance achieved	03-SEP-2008	State	-
4472	6422	SOX	State Compliance achieved	03-SEP-2008	State	-
4472	6423	SOX	State Compliance achieved	03-SEP-2008	State	-
4495	6458	SOX	State Compliance achieved	14-AUG-2008	State	-
4471	6420	SOX	State Compliance achieved	29-APR-2008	State	-
4471	6419	SOX	State Compliance achieved	29-APR-2008	State	-

1 - 50 of 89

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WL-55-651262 - 4	4952	Yes	Well	Ground water	Permanent	Active
XWL-55-651263 - 5	4951	Yes	Well	Ground water	Permanent	Inactive
XWL-55-651260 - 2	4950	Yes	Well	Ground water	Permanent	Inactive
XWL-55-651259 - 1	4949	Yes	Well	Ground water	Permanent	Inactive
WL-55-801443 - 5	6818	Yes	Well	Ground water	Permanent	Active
DISTRIBUTION SYSTEM	12898	No	Distribution System/Zone	-	-	Active
EPDS004	10168	No	Sampling Station	-	-	Active
EPDS005	10169	No	Sampling Station	-	-	Active
XEPDS002	10167	No	Sampling Station	-	-	Inactive
XEPDS001	16701	No	Sampling Station	-	-	Inactive
XEPHIS	17759	No	Sampling Station	-	-	Inactive
STORAGE TANK 001 - 250,000	20365	No	Storage	-	-	Active
STORAGE TANK 002 - 250,000	20366	No	Storage	-	-	Active
TP004 - CL2	16801	No	Treatment Plant	-	-	Active
TP005 - CL2	17110	No	Treatment Plant	-	-	Active
XTP002 - CL2	17109	No	Treatment Plant	-	-	Inactive

1 - 16 of 16

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TP004 - CL2	16801	Hypochlorination, Post	Disinfection
XTP002 - CL2	17109	Hypochlorination, Post	Disinfection
TP005 - CL2	17110	Hypochlorination, Post	Disinfection

1 - 3 of 3

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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