Safe Drinking Water Information System (SDWIS) Federal Reporting Services

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PWS ID	NV0000160
PWS Name	MOAPA VALLEY WATER DISTRICT
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	8500
County Served	Clark

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
RPT	Report Sample Result/Fail Monitor (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	192987	Returned to Compliance	01-FEB-2025	-	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	192932	Returned to Compliance	01-NOV-2017	30-NOV-2017	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	192934	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	192930	Returned to Compliance	01-JAN-2016	31-MAR-2016	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	192931	Returned to Compliance	01-MAR-2015	28-FEB-2016	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	192927	Returned to Compliance	01-MAR-2014	28-FEB-2015	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	192915	Returned to Compliance	01-SEP-2011	30-SEP-2011	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	192922	Returned to Compliance	01-JUL-2011	30-SEP-2011	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	191208	Returned to Compliance	01-NOV-2007	30-NOV-2007	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	191107	Returned to Compliance	01-OCT-2006	31-OCT-2006	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	190206	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
Other	Notification, Public	Total Coliform Rule	Coliform (TCR)	192	Known	01-AUG-1992	31-AUG-1992	No
Other	Notification, Public	Total Coliform Rule	Coliform (TCR)	292	Known	01-JUN-1992	30-JUN-1992	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	391	Known	01-SEP-1991	30-SEP-1991	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	491	Known	01-AUG-1991	31-AUG-1991	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	107591	Known	01-FEB-1991	30-APR-1991	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	107491	Known	01-JAN-1991	31-MAR-1991	No
MCL	Maximum Contaminant Level Violation, Average	Inorganic Chemicals	Fluoride	116690	Known	01-SEP-1990	30-NOV-1990	Yes
MCL	Maximum Contaminant Level Violation, Average	Inorganic Chemicals	Fluoride	114890	Known	01-APR-1990	30-JUN-1990	Yes
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	102190	Known	01-DEC-1989	28-FEB-1990	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	101990	Known	01-NOV-1989	31-JAN-1990	No
MCL	Maximum Contaminant Level Violation, Average	Inorganic Chemicals	Fluoride	102290	Known	01-OCT-1989	31-DEC-1989	Yes
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	140288	Known	31-AUG-1988	30-NOV-1988	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	126888	Known	31-MAR-1988	30-JUN-1988	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	108288	Known	30-SEP-1987	29-DEC-1987	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	138787	Known	31-DEC-1986	30-JAN-1987	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	138687	Known	30-NOV-1986	29-DEC-1986	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	127786	Known	30-SEP-1986	29-OCT-1986	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	118686	Known	30-JUN-1986	29-JUL-1986	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	109886	Known	31-MAR-1986	30-APR-1986	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	106086	Known	31-DEC-1985	30-JAN-1986	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	105986	Known	30-NOV-1985	29-DEC-1985	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	186885	Known	30-NOV-1984	29-DEC-1984	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	186985	Known	31-OCT-1984	30-NOV-1984	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	169584	Known	31-AUG-1984	30-SEP-1984	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	169384	Known	30-MAY-1984	29-JUN-1984	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	169184	Known	29-FEB-1984	28-MAR-1984	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	168984	Known	30-NOV-1983	29-DEC-1983	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	169084	Known	31-OCT-1983	30-NOV-1983	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	123983	Known	31-AUG-1983	30-SEP-1983	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	123683	Known	31-MAY-1983	30-JUN-1983	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	127182	Known	31-AUG-1982	30-SEP-1982	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	126982	Known	30-MAY-1982	29-JUN-1982	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	111982	Known	28-FEB-1982	27-MAR-1982	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	104482	Known	31-DEC-1981	30-JAN-1982	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	102182	Known	31-OCT-1981	30-NOV-1981	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	128881	Known	30-JUN-1981	29-JUL-1981	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	120581	Known	31-MAR-1981	30-APR-1981	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	108181	Known	31-DEC-1980	30-JAN-1981	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	152680	Known	30-SEP-1980	29-OCT-1980	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
3959	192987	SIF	State Public Notification received	20-JAN-2026	State	From: Lon Dalley [lon@moapawater.com] Sent: Tuesday, January 20, 2026 4:03 PM To: Nathan Diaz [diazn@SNHD.ORG]; 1320 Safe Drinking Water [sdw@snhd.org] CC: jdrahos@ndep.nv.gov; Joe Davis [joe@moapawater.com]; Kiley Bradshaw [kiley@moapawater.com] Subject: RE: SNHD RE contest violation PWS NV0000160-192987, MOAPA VALLEY WATER DISTRICT, Clark County, NV Attachments: 2025 Tier 3 Violation Public Notice Letter - MVWD Letterhead.pdf
3954	192932	SIF	State Public Notification received	17-JAN-2018	State	PN RE NOV 2017 November coliform and chlorine missed
3954	192934	SIF	State Public Notification received	17-JAN-2018	State	PN RE NOV 2017 November coliform and chlorine missed
3946	192931	SIE	State Public Notification requested	25-APR-2017	State	-
3947	192927	SOX	State Compliance achieved	14-FEB-2017	State	-
3943	192930	SIE	State Public Notification requested	13-OCT-2016	State	-
3927	192922	SOX	State Compliance achieved	09-OCT-2012	State	-
3928	192915	SOX	State Compliance achieved	11-OCT-2011	State	-
3408	191208	SIE	State Public Notification requested	13-FEB-2008	State	-
3807	191107	SOX	State Compliance achieved	30-NOV-2006	State	-
3006	190206	SOX	State Compliance achieved	28-AUG-2006	State	PN ISSUED IN NEWSPAPER ON AUGUST 23, 2006.
505	116690	SO+	State no additional Formal Action needed	28-OCT-2004	State	HISTORY CLEANUP
505	102290	SO+	State no additional Formal Action needed	28-OCT-2004	State	HISTORY CLEANUP
505	114890	SO+	State no additional Formal Action needed	28-OCT-2004	State	HISTORY CLEANUP
182	113082	SIA	State Violation/Reminder Notice	30-SEP-1982	State	-

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
CC FROM MOAPA MX NV0001102	6621	Yes	Consecutive Connection	Ground water	Permanent	Inactive
MX6 WELL	333	Yes	Well	Ground water	Seasonal	Active
WELL MX 6	4181	Yes	Well	Ground water	Permanent	Inactive
ARROW CANYON WELL 2	5298	Yes	Well	Ground water	Permanent	Active
ARROW CANYON WELL 1	350	Yes	Well	Ground water	Permanent	Active
LOGANDALE WELL	2312	Yes	Well	Ground water	Emergency	Active
JONES SPRING	2320	Yes	Spring	Ground water	Permanent	Active
BALDWIN SPRING	2298	Yes	Spring	Ground water	Permanent	Active
DISTRIBUTION SYSTEM	2497	No	Distribution System/Zone	-	-	Active
MOAPA WATER HAULER FILL STATION	9937	No	Distribution System/Zone	-	-	Active
NDOT BLM BOOSTER STATION VER 01	10722	No	Pump Facility	-	-	Active
MOAPA PUMP STATION	6420	No	Pump Facility	-	-	Active
BALDWIN SPRING BOOSTER STATION	8669	No	Pump Facility	-	-	Active
EP3 - MX6 AND ARROW CANYON BLEND	6071	No	Sampling Station	-	-	Active
BALDWIN SPRINGS TF EFFLUENT	6087	No	Sampling Station	-	-	Active
ARROW CANYON TF EFFLUENT	6088	No	Sampling Station	-	-	Active
OVERTON STORAGE TANK 1MG 500K	2689	No	Storage	-	-	Active
LOGANDALE EAST STORAGE TANK 1MG 500K	2690	No	Storage	-	-	Active
LOGANDALE WEST STORAGE TANK 1MG	2691	No	Storage	-	-	Active
MOAPA STORAGE TANK 1MG	2692	No	Storage	-	-	Active
INDIAN RES WEST STORAGE TANK 200K	5022	No	Storage	-	-	Active
INDIAN RES EAST STORAGE TANK 200K	5023	No	Storage	-	-	Active
MOAPA STORAGE TANK 3 MG	5300	No	Storage	-	-	Active
ARROW CANYON CHLORINATOR COMBO	4180	No	Treatment Plant	-	-	Active
EP1 ARROW CANYON AS TREATMENT FACILITY	6039	No	Treatment Plant	-	-	Active
EP2 BALDWIN SPRINGS AS TREATMENT	6070	No	Treatment Plant	-	-	Active
RELOCATED BALDWIN SPRINGS CHLORINATOR	9224	No	Treatment Plant	-	-	Active
LOGANDALE CHLORINATOR	10723	No	Treatment Plant	-	-	Inactive
BALDWIN SPRING CHLORINATOR	214	No	Treatment Plant	-	-	Inactive
JONES SPRING CHLORINATOR	323	No	Treatment Plant	-	-	Inactive
MX WELL CHLORINATOR	4179	No	Treatment Plant	-	-	Inactive
ARROW CANYON WELL 2 CHLORINATOR	5299	No	Treatment Plant	-	-	Inactive

1 - 32 of 32

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
BALDWIN SPRING CHLORINATOR	214	Hypochlorination, Post	Disinfection
JONES SPRING CHLORINATOR	323	Hypochlorination, Post	Disinfection
ARROW CANYON CHLORINATOR COMBO	4180	Hypochlorination, Post	Disinfection
ARROW CANYON WELL 2 CHLORINATOR	5299	Hypochlorination, Post	Disinfection
EP1 ARROW CANYON AS TREATMENT FACILITY	6039	Reducing Agents	Inorganics removal
EP1 ARROW CANYON AS TREATMENT FACILITY	6039	Innovative	Inorganics removal
EP2 BALDWIN SPRINGS AS TREATMENT	6070	Innovative	Inorganics removal
EP2 BALDWIN SPRINGS AS TREATMENT	6070	Reducing Agents	Inorganics removal
RELOCATED BALDWIN SPRINGS CHLORINATOR	9224	Hypochlorination, Post	Disinfection

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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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