Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	AZ0409049
PWS Name	WATCO WATER
PWS Type	Community water system
Owner Type	Private
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	1153
County Served	Navajo

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
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	2164	Known	01-NOV-2025	30-NOV-2025	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	2163	Returned to Compliance	01-SEP-2025	30-SEP-2025	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	2162	Returned to Compliance	01-JUL-2025	-	No
MR	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	2160	Open	01-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2159	Open	02-OCT-2024	-	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	2158	Returned to Compliance	01-OCT-2023	-	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	2157	Returned to Compliance	01-JUN-2023	30-JUN-2023	No
TT	Treatment Technique, Level 2 Assessment (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	2156	Returned to Compliance	06-NOV-2022	-	Yes
RPT	Report Sample Result/Fail Monitor (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	2155	Returned to Compliance	01-SEP-2022	-	No
MR	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	2154	Returned to Compliance	23-OCT-2020	-	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	2153	Returned to Compliance	01-OCT-2020	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	2152	Returned to Compliance	01-JUL-2020	-	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	2141	Returned to Compliance	01-OCT-2015	31-OCT-2015	No
MR	Monitoring, Source Water (GWR)	Ground Water Rule	E. COLI	2142	Returned to Compliance	25-SEP-2015	-	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	2138	Returned to Compliance	01-JUL-2015	31-JUL-2015	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	2137	Returned to Compliance	01-NOV-2014	30-NOV-2014	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	2136	Returned to Compliance	01-JUL-2014	-	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	2135	Returned to Compliance	01-MAY-2014	31-MAY-2014	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	2134	Returned to Compliance	01-APR-2014	30-APR-2014	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	2133	Returned to Compliance	01-MAR-2014	31-MAR-2014	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	2124	Returned to Compliance	01-OCT-2012	-	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	2123	Returned to Compliance	01-DEC-2011	31-DEC-2011	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	2122	Returned to Compliance	01-OCT-2011	31-OCT-2011	Yes
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	2131	Returned to Compliance	01-OCT-2011	-	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	2121	Returned to Compliance	01-AUG-2011	31-AUG-2011	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	2130	Returned to Compliance	01-JUL-2011	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	2129	Returned to Compliance	01-OCT-2010	-	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	2119	Returned to Compliance	01-FEB-2010	28-FEB-2010	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	2117	Returned to Compliance	01-AUG-2009	31-AUG-2009	Yes
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	2127	Returned to Compliance	01-JUL-2009	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	2126	Returned to Compliance	01-JUL-2008	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	2116	Returned to Compliance	01-JUL-2007	-	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	2111	Returned to Compliance	01-JAN-2007	31-JAN-2007	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	2110	Returned to Compliance	01-OCT-2006	31-OCT-2006	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	2107	Returned to Compliance	01-AUG-2006	31-AUG-2006	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	2108	Returned to Compliance	01-JUL-2006	-	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	2106	Returned to Compliance	01-JAN-2006	31-JAN-2006	No
MR	Monitoring, Regular	Inorganic Chemicals	Asbestos	2143	Returned to Compliance	01-JAN-2006	31-DEC-2014	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	1906	Returned to Compliance	01-NOV-2005	30-NOV-2005	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	1706	Returned to Compliance	01-JUL-2005	31-JUL-2005	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	1305	Returned to Compliance	01-JUL-2005	-	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	1606	Returned to Compliance	01-JUN-2005	30-JUN-2005	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	1506	Returned to Compliance	01-MAY-2005	31-MAY-2005	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	1105	Returned to Compliance	01-FEB-2005	28-FEB-2005	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	2006	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	1005	Returned to Compliance	01-JAN-2005	31-JAN-2005	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	905	Returned to Compliance	01-OCT-2004	31-OCT-2004	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	805	Returned to Compliance	01-SEP-2004	30-SEP-2004	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	1205	Returned to Compliance	01-JUL-2004	-	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	704	Returned to Compliance	01-JUN-2004	30-JUN-2004	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
494	2164	SIE	State Public Notification requested	19-DEC-2025	State	-
492	2163	SOX	State Compliance achieved	13-NOV-2025	State	Following Monitoring period's sample(s) received, missed monitoring violation can be RTC.
487	2162	SOX	State Compliance achieved	21-OCT-2025	State	-
484	2160	SIA	State Violation/Reminder Notice	31-MAR-2025	State	-
483	2158	SOX	State Compliance achieved	22-JAN-2025	State	Samples taken in 2024 monitoring period. AH9 1/22/2025
481	2159	SIA	State Violation/Reminder Notice	26-NOV-2024	State	-
477	2157	SOX	State Compliance achieved	24-AUG-2023	State	-
473	2156	SOX	State Compliance achieved	17-JAN-2023	State	-
470	2155	SOX	State Compliance achieved	14-NOV-2022	State	Late data submitted on 11/14/22. CO3 12/7/22
464	2154	SOX	State Compliance achieved	10-NOV-2021	State	2020 LCN WAS SUBMITTED LATE ON 11/10/2020 - JK5 1/22/2021
459	2153	SIA	State Violation/Reminder Notice	22-NOV-2020	State	-
458	2152	SOX	State Compliance achieved	30-SEP-2020	State	PWS SUBMITTED REVISED CCR ON 09/30/2020 - JK5 10/08/2020
452	2142	SOX	State Compliance achieved	01-MAR-2016	State	-
452	2141	SOX	State Compliance achieved	01-MAR-2016	State	-
447	2138	SOX	State Compliance achieved	10-NOV-2015	State	-
454	2143	SOX	State Compliance achieved	28-SEP-2015	State	Data entered 9/28/15, DB2
445	2137	SOX	State Compliance achieved	30-JAN-2015	State	-
442	2135	SOX	State Compliance achieved	07-AUG-2014	State	-
441	2134	SOX	State Compliance achieved	14-JUL-2014	State	-
441	2133	SOX	State Compliance achieved	14-JUL-2014	State	-
443	2136	SOX	State Compliance achieved	09-JUL-2014	State	-
437	2131	SOX	State Compliance achieved	01-JUL-2013	State	-
437	2129	SOX	State Compliance achieved	01-JUL-2013	State	-
437	2124	SOX	State Compliance achieved	01-JUL-2013	State	-
433	2122	SOX	State Compliance achieved	25-APR-2012	State	-
432	2123	SOX	State Compliance achieved	16-FEB-2012	State	-
429	2121	SOX	State Compliance achieved	20-OCT-2011	State	-
436	2130	SOX	State Compliance achieved	08-JUL-2011	State	-
435	2127	SOX	State Compliance achieved	02-JUL-2010	State	-
427	2119	SOX	State Compliance achieved	08-APR-2010	State	-
424	2117	SOX	State Compliance achieved	21-DEC-2009	State	-
423	2126	SOX	State Compliance achieved	15-DEC-2008	State	-
419	1205	SOX	State Compliance achieved	09-OCT-2007	State	-
419	2116	SOX	State Compliance achieved	09-OCT-2007	State	-
419	2108	SOX	State Compliance achieved	09-OCT-2007	State	-
419	1305	SOX	State Compliance achieved	09-OCT-2007	State	-
418	2006	SOX	State Compliance achieved	25-MAR-2007	State	-
416	2111	SOX	State Compliance achieved	14-MAR-2007	State	-
405	2110	SOX	State Compliance achieved	19-DEC-2006	State	-
404	704	SOX	State Compliance achieved	31-OCT-2006	State	-
404	805	SOX	State Compliance achieved	31-OCT-2006	State	-
404	905	SOX	State Compliance achieved	31-OCT-2006	State	-
404	1005	SOX	State Compliance achieved	31-OCT-2006	State	-
404	1105	SOX	State Compliance achieved	31-OCT-2006	State	-
404	1506	SOX	State Compliance achieved	31-OCT-2006	State	-
404	1606	SOX	State Compliance achieved	31-OCT-2006	State	-
404	1706	SOX	State Compliance achieved	31-OCT-2006	State	-
404	1906	SOX	State Compliance achieved	31-OCT-2006	State	-
404	2106	SOX	State Compliance achieved	31-OCT-2006	State	-
404	304	SOX	State Compliance achieved	31-OCT-2006	State	-

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WL-55-603156	21482	Yes	Well	Ground water	Permanent	Active
WL-55-506606	7311	Yes	Well	Ground water	Permanent	Active
WL-55-910954	22821	Yes	Well	Ground water	Permanent	Active
DISTRIBUTION SYSTEM	15228	No	Distribution System/Zone	-	-	Active
EPDS002	21483	No	Sampling Station	-	-	Active
EPDS003	26587	No	Sampling Station	-	-	Active
EPDS001	9764	No	Sampling Station	-	-	Active
STORAGE TANK 001 - 400,000	22822	No	Storage	-	-	Active
STORAGE TANK 002 - 100,000	24575	No	Storage	-	-	Active
STORAGE TANK 003 - 25,000	24576	No	Storage	-	-	Active

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Treatment Processes

No treatment process(es) found. EPA has no record of treatment process(es) reported by the primacy agency for this water system.

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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