Nevada Water Systems

Compiled by PlainEnviro · August 25, 2026

230 community water systems in Nevada, ranked by violation count. Data from EPA Safe Drinking Water Information System (SDWIS).

Water Systems

230

Health-Based Violation Records

1,021

Health Violations

105 systems

Population Served

3,134,139

Nevada community water systems are regulated by the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act; each utility files compliance results with the state's primacy agency and, for federally listed contaminants, with the U.S. Environmental Protection Agency directly. PlainEnviro's health-based SDWIS extract above counts health-based exceedances only -- monitoring and reporting violations are not present in these figures.

Violation counts reflect both infrastructure realities and reporting diligence, a state with more small rural systems will accumulate more monitoring-type violations without necessarily delivering worse water. Health-based violations are the stronger safety signal. A past violation does not itself indicate current unsafe water; utilities must notify customers, remediate, and publish an annual Consumer Confidence Report. All numbers below draw directly from the federal SDWIS record.

Which water systems have violations? (105)

#	System Name	City	Source	Violations	Pop. Served	Health
1	ROSEMOUNT WATER CO Reno	Reno	Groundwater	212	54	Yes
2	SHOSHONE ESTATES WATER CO INC Las Vegas	Las Vegas	Groundwater	111	240	Yes
3	KATHERINE LANDING DWTP Boulder City	Boulder City	Surface Water	63	1,300	Yes
4	SILVER KNOLLS MUTUAL WATER COMPANY Reno	Reno	Groundwater	57	120	Yes
5	ROARK ESTATES WATER ASSOC Las Vegas	Las Vegas	Groundwater	49	60	Yes
6	OLD RIVER WATER COMPANY Fallon	Fallon	Groundwater	43	300	Yes
7	DESERT SUNRISE WATER USERS ASSOC Las Vegas	Las Vegas	Groundwater	36	25	Yes
8	Duckwater Duckwater	Duckwater	Groundwater	28	166	Yes
9	Yerington (Campbell Ranch) Yerington	Yerington	Groundwater	20	512	Yes
10	MCDERMITT WATER SYSTEM Winnemucca	Winnemucca	Groundwater	20	200	Yes
11	Ft. McDermitt Paiute-Shoshone - Upper Mcdermitt	Mcdermitt	Groundwater	20	110	Yes
12	Las Vegas Paiute Colony Las Vegas	Las Vegas	Surface Water	17	100	Yes
13	STAR POINT MHP RV PARK Mill City	Mill City	Groundwater	16	50	Yes
14	South Fork (Te-Moak) Elko	Elko	Groundwater	15	40	Yes
15	SUTCLIFFE MOBILE PARK Reno	Reno	Groundwater	14	60	Yes
16	ELKHORN WATER ASSOCIATION LLC Las Vegas	Las Vegas	Groundwater	13	25	Yes
17	PRIMM VALLEY CASINO RESORTS Las Vegas	Las Vegas	Groundwater	12	7,000	Yes
18	Walker River Paiute Tribe Schurz	Schurz	Groundwater	12	662	Yes
19	ELK POINT COUNTRY CLUB Zephyr Cove	Zephyr Cove	Groundwater	12	325	Yes
20	BERMUDA PALMS MANAGEMENT LLC Las Vegas	Las Vegas	Groundwater	11	60	Yes
21	NEVADA STATE VETERANS HOME BOULDER CITY Boulder	Boulder	Surface Water	10	708	Yes
22	Ft. McDermitt Paiute-Shoshone - Lower Mcdermitt	Mcdermitt	Groundwater	10	456	Yes
23	OSPREY MOBILE HOME PARK Las Vegas	Las Vegas	Groundwater	10	150	Yes
24	EQUESTRIAN ESTATES CO OP WATER ASSOC Las Vegas	Las Vegas	Groundwater	10	108	Yes
25	SIERRA COUNTRY ESTATES Minden	Minden	Groundwater	10	47	Yes
26	SHETLAND WATER DISTRICT Las Vegas	Las Vegas	Groundwater	9	38	Yes
27	Las Vegas Paiute Snow Mountain Las Vegas	Las Vegas	Groundwater	8	2,340	Yes
28	GOLDFIELD TOWN WATER Goldfield	Goldfield	Groundwater	8	350	Yes
29	BLUE DIAMOND WATER CO OP INC Las Vegas	Las Vegas	Groundwater	8	85	Yes
30	STAGECOACH GID Stagecoach	Stagecoach	Groundwater	6	1,628	Yes
31	HAWTHORNE ARMY DEPOT Hawthorne	Hawthorne	Groundwater	6	300	Yes
32	BEATTY WATER AND SANITATION DISTRICT Beatty	Beatty	Groundwater	5	1,024	Yes
33	PINE VILLAGE MHP Henderson	Henderson	Groundwater	5	80	Yes
34	LUNA VISTA Las Vegas	Las Vegas	Groundwater	5	66	Yes
35	NELLIS AIR FORCE BASE Nellis Afb	Nellis Afb	Surface Water	4	19,081	Yes
36	Duck Valley Newtown Owyhee	Owyhee	Groundwater	4	450	Yes
37	LANDER CO SEWER AND WATER DIST 2 AUSTIN Battle Mountain	Battle Mountain	Groundwater	4	350	Yes
38	CARVERS SMOKEY VALLEY RV AND MHP Round Mountain	Round Mountain	Groundwater	4	250	Yes
39	TOPAZ LAKE WATER CO INC Gardnerville	Gardnerville	Groundwater	4	40	Yes
40	MOUNT ROSE BOWL PROPERTY OWNERS WATER CO Reno	Reno	Groundwater	4	40	Yes
41	Yomba Indian Reservation Austin	Austin	Groundwater	4	30	Yes
42	SOUTHERN DESERT CORRECTIONAL CTR NDOC Las Vegas	Las Vegas	Groundwater	3	6,200	Yes
43	YERINGTON CITY OF Yerington	Yerington	Groundwater	3	5,050	Yes
44	ALAMO SEWER AND WATER GID Alamo	Alamo	Groundwater	3	900	Yes
45	PLANTATION ACRES MHP Las Vegas	Las Vegas	Groundwater	3	226	Yes
46	Battle Mountain Battle Mountain	Battle Mountain	Groundwater	3	195	Yes
47	VALMY STATION MOBILE HOME PARK Valmy	Valmy	Groundwater	3	96	Yes
48	MERRITT MOBILE HOME & RV PARK Las Vegas	Las Vegas	Groundwater	3	70	Yes
49	TERRACE GARDEN APARTMENTS Carson City	Carson City	Groundwater	3	60	Yes
50	MCCARTNEY MOBILE ESTATES MHP 2 Las Vegas	Las Vegas	Groundwater	3	31	Yes
51	MCCARTNEY MOBILE ESTATES MHP 1 Las Vegas	Las Vegas	Groundwater	3	25	Yes
52	GREAT BASIN WATER CO COLD SPRINGS Reno	Reno	Groundwater	2	9,910	Yes
53	BIG BEND WATER DISTRICT Las Vegas	Las Vegas	Surface Water	2	9,000	Yes
54	CANYON GID Sparks	Sparks	Groundwater	2	1,310	Yes
55	STEAMBOAT SPRINGS WATERWORKS INC Reno	Reno	Groundwater	2	998	Yes
56	Washoe Tribe Carson Colony Gardnerville	Gardnerville	Groundwater	2	450	Yes
57	DUTCHMAN ACRES Reno	Reno	Groundwater	2	260	Yes
58	WESTERN HILLS MHP Las Vegas	Las Vegas	Surface Water	2	213	Yes
59	COLD CREEK CANYON HOMEOWNERS Las Vegas	Las Vegas	Groundwater	2	180	Yes
60	PLEASANT VALLEY Pahrump	Pahrump	Groundwater	2	110	Yes
61	CARSON RIVER ESTATES Fallon	Fallon	Groundwater	2	105	Yes
62	TORREY PINES TINA LN WTR ASSOC Las Vegas	Las Vegas	Groundwater	2	70	Yes
63	AMARGOSA WATER COMPANY Las Vegas	Las Vegas	Groundwater	2	54	Yes
64	LAKECREST MOBILE COURT Reno	Reno	Groundwater	2	52	Yes
65	PINE RIDGE MHP NO 1 Crystal Bay	Crystal Bay	Groundwater	2	51	Yes
66	WOODFORDS MUTUAL WATER COMPANY Minden	Minden	Groundwater	2	50	Yes
67	LOGAN CREEK ESTATES GID Gardnerville	Gardnerville	Groundwater	2	50	Yes
68	RANCHO VISTA 4 Pahrump	Pahrump	Groundwater	2	50	Yes
69	PINION PINES MHP Minden	Minden	Groundwater	2	30	Yes
70	FERNLEY PUBLIC WORKS Fernley	Fernley	Groundwater	1	23,064	Yes
71	KINGSBURY GID Stateline	Stateline	Surface Water	1	3,839	Yes
72	LANDER CO SEWER AND WATER DIST 1 BM Battle Mountian	Battle Mountian	Groundwater	1	3,635	Yes
73	TOPAZ RANCH ESTATES GID AND WATER CO Wellington	Wellington	Groundwater	1	1,545	Yes
74	GREAT BASIN WATER CO SPANISH SPRINGS Reno	Reno	Groundwater	1	1,450	Yes
75	JACKPOT WATER SYSTEM Jackpot	Jackpot	Groundwater	1	1,240	Yes
76	ROUND MOUNTAIN PUC Round Mountain	Round Mountain	Groundwater	1	1,200	Yes
77	GLENBROOK WATER COOPERATIVE INC Glenbrook	Glenbrook	Surface Water	1	1,000	Yes
78	PAHRUMP UTILITY COMPANY INC Pahrump	Pahrump	Groundwater	1	985	Yes
79	Washoe Tribe Dresslerville Community Gardnerville	Gardnerville	Groundwater	1	452	Yes
80	EUREKA WATER ASSOCIATION Eureka	Eureka	Groundwater	1	450	Yes
81	PINEVIEW ESTATES Reno	Reno	Groundwater	1	450	Yes
82	WALKER LAKE GID Hawthorne	Hawthorne	Groundwater	1	450	Yes
83	GRANDVIEW TERRACE WATER DISTRICT Reno	Reno	Groundwater	1	328	Yes
84	MONTELLO WATER SYSTEM Elko	Elko	Groundwater	1	287	Yes
85	LAMOILLE WATER USERS ASSOC Lamoille	Lamoille	Groundwater	1	200	Yes
86	JARBIDGE WATER SYSTEM Elko	Elko	Surface Water	1	200	Yes
87	SAGE VALLEY MHP LLC Reno	Reno	Groundwater	1	188	Yes
88	GERLACH GID Gerlach	Gerlach	Groundwater	1	180	Yes
89	HOLBROOK STATION RV AND MHP Gardnerville	Gardnerville	Groundwater	1	180	Yes
90	Duck Valley Owyhee Owyhee	Owyhee	Groundwater	1	150	Yes
91	Washoe Tribe Stewart Gardnerville	Gardnerville	Groundwater	1	150	Yes
92	GULF COAST TRADES CENTER Minden	Minden	Groundwater	1	150	Yes
93	CREEKSIDE CABINS & RV RESORT Henderson	Henderson	Groundwater	1	124	Yes
94	WADSWORTH MOBILE HOME PARK Minden	Minden	Groundwater	1	90	Yes
95	SUNSET MHP Las Vegas	Las Vegas	Groundwater	1	90	Yes
96	BIG FIVE PARK Henderson	Henderson	Groundwater	1	65	Yes
97	PINE RIDGE NO 2 Crystal Bay	Crystal Bay	Groundwater	1	61	Yes
98	WESTVIEW TERRACE MOBILE HOME PARK Las Vegas	Las Vegas	Groundwater	1	60	Yes
99	PIOCHE PUBLIC UTILITIES CASTLETON Pioche	Pioche	Groundwater	1	60	Yes
100	C VALLEY MHP Henderson	Henderson	Groundwater	1	54	Yes
101	PALM GARDENS WATER CO OP Palm Gardens	Palm Gardens	Groundwater	1	42	Yes
102	ANCHOR IN MHP Pahrump	Pahrump	Groundwater	1	36	Yes
103	FENDEE ESTATES Henderson	Henderson	Surface Water	1	30	Yes
104	MOUNTAIN CITY WATER AND SEWER Mountain City	Mountain City	Groundwater	1	30	Yes
105	FORT APACHE ANN NE WATER ASSOC Las Vegas	Las Vegas	Groundwater	1	25	Yes

Systems with No Violations (125)

125 water systems in Nevada have zero recorded violations. Showing the 50 largest by population served.

LAS VEGAS VALLEY WATER DISTRICT (1,539,277) TRUCKEE MEADOWS WATER AUTHORITY (442,000) NORTH LAS VEGAS UTILITIES (376,515) HENDERSON CITY OF (336,534) CARSON CITY PUBLIC WORKS (59,000) VIRGIN VALLEY WATER DISTRICT (26,000) ELKO CITY OF (23,000) SUN VALLEY GID (17,000) DAYTON VALLEY WATER SYSTEM (16,000) BOULDER CITY (15,000) GREAT BASIN WATER COMPANY (12,255) GARDNERVILLE RANCHOS GID (11,300) GREAT BASIN WATER CO SPRING CREEK (9,340) INCLINE VILLAGE GID (9,313) FALLON CITY OF (9,184) WINNEMUCCA CITY OF (8,518) MOAPA VALLEY WATER DISTRICT (8,500) DOUGLAS COUNTY CARSON VALLEY SYSTEM (6,488) INDIAN HILLS GID (5,962) GARDNERVILLE WATER COMPANY (5,800) ELY MUNICIPAL WATER DEPARTMENT (5,000) WEST WENDOVER WATER SYSTEM (4,535) MOUNTAIN FALLS WATER SYSTEM GBWC (4,345) GREAT BASIN WATER CO SPRING CREEK MHP (3,640) LOVELOCK MEADOWS WATER DISTRICT (3,562) TOWN OF MINDEN (3,500) SILVER SPRINGS MUTUAL WATER COMPANY (3,070) FALLON NAVAL AIR STATION (3,000) HAWTHORNE UTILITIES (2,876) TONOPAH PUBLIC UTILITIES (2,853) CARLIN UTILITIES (2,500) SIGNATURE TOWERS (2,356) GOLD COUNTRY ESTATES (1,695) LOVELOCK CORRECTIONAL CENTER NDOC (1,630) STOREY COUNTY WATER DISTRICT (1,420) WELLS MUNICIPAL WATER DEPARTMENT (1,300) CAVE ROCK SKYLAND (1,267) ZEPHYR COVE WATER UTILITY DISTR (1,209) Fallon-Paiute Shoshone Tribe (1,200) MCGILL WATER AND SEWER DIST (1,200) ROUND HILL GID (1,200) CALIENTE PUBLIC UTILITIES (1,100) ELY MAXIMUM SECURITY PRISON NDOC (1,099) DESERT UTILITIES (1,086) COUNTRY VIEW ESTATES GBWC (1,072) KYLE CANYON WATER DISTRICT (1,040) FAIRGROUNDS/SUNRISE ESTATES (1,011) SAND CREEK (953) INDIAN SPRINGS WATER CO INC (900) PANACA FARMSTEAD ASSOCIATION (900) +75 more

All Water Systems in Nevada (230)

Page 2 of 5, ordered by population served.

System	Population Served	Violations
WELLS MUNICIPAL WATER DEPARTMENT	1,300	0
CAVE ROCK SKYLAND	1,267	0
JACKPOT WATER SYSTEM	1,240	1
ZEPHYR COVE WATER UTILITY DISTR	1,209	0
Fallon-Paiute Shoshone Tribe	1,200	0
MCGILL WATER AND SEWER DIST	1,200	0
ROUND HILL GID	1,200	0
ROUND MOUNTAIN PUC	1,200	1
CALIENTE PUBLIC UTILITIES	1,100	0
ELY MAXIMUM SECURITY PRISON NDOC	1,099	0
DESERT UTILITIES	1,086	0
COUNTRY VIEW ESTATES GBWC	1,072	0
KYLE CANYON WATER DISTRICT	1,040	0
BEATTY WATER AND SANITATION DISTRICT	1,024	5
FAIRGROUNDS/SUNRISE ESTATES	1,011	0
GLENBROOK WATER COOPERATIVE INC	1,000	1
STEAMBOAT SPRINGS WATERWORKS INC	998	2
PAHRUMP UTILITY COMPANY INC	985	1
SAND CREEK	953	0
ALAMO SEWER AND WATER GID	900	3
INDIAN SPRINGS WATER CO INC	900	0
PANACA FARMSTEAD ASSOCIATION	900	0
KINGS ROW TP	860	0
SEARCHLIGHT WATER COMPANY	760	0
OLYMPIC VALLEY MWC	756	0
NEVADA STATE VETERANS HOME BOULDER CITY	708	10
PIOCHE PUBLIC UTILITIES	700	0
NPS BOULDER BEACH	690	0
Walker River Paiute Tribe	662	12
Hungry Valley (Reno-Sparks)	620	0
JEAN UTILITY SERVICES INC	560	0
BLUE DIAMOND WATER COMPANY	527	0
Yerington (Campbell Ranch)	512	20
VERDI MEADOWS UTILITY COMPANY INC	510	0
RUTH WATER DISTRICT	470	0
Reno Sparks Indian Colony	457	0
Ft. McDermitt Paiute-Shoshone - Lower	456	10
Washoe Tribe Dresslerville Community	452	1
Washoe Tribe Carson Colony	450	2
Duck Valley Newtown	450	4
EUREKA WATER ASSOCIATION	450	1
HILLCREST MANOR WATER USERS ASSOCIATION	450	0
PINEVIEW ESTATES	450	1
WALKER LAKE GID	450	1
GABBS WATER SYSTEM	411	0
Pokegama Lake Resort and MHP	400	0
EASTLAND HEIGHTS WATER ASSOCIATION	400	0
LAKEVIEW ESTATES	380	0
RUBY DOME HOLDINGS DBA ELKO RV PARK	357	0
LANDER CO SEWER AND WATER DIST 2 AUSTIN	350	4

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Frequently Asked Questions

How many water systems are in Nevada?

Nevada has 230 community water systems tracked by the EPA, serving a combined population of 3,134,139 people.

How many water systems in Nevada have health violations?

105 water systems in Nevada have health-based violations, which include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations. These represent 46% of all systems in the state.

How many health-based violation records are in this extract for Nevada?

PlainEnviro's health-based EPA SDWIS extract contains 1,021 records joined to 230 active community water systems in Nevada. Monitoring and reporting records are not included.

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Nevada Water Quality → Nevada Environmental Overview → All States →

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About This Data

Water system data is from the EPA Safe Drinking Water Information System (SDWIS). Health-based violations include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations that may pose a direct risk to public health. Only community water systems (CWS) are included.

Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services

Read our methodology - how this data is sourced, computed, and verified.

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