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Non-Transient Non-Community Water System · PWS NV0002189

Smith Valley Schools

Yerington, Nevada 89447 - drinking water served from groundwater sources to 255 people, tracked in EPA SDWIS and UCMR5.

255
People served
142
EPA violations
1
Health-based
Untested
UCMR5 result

The verdict

EPA records 142 drinking-water violations at Smith Valley Schools, 1% of them health-based - above the Nevada per-system average.

142
Total EPA violations on record
1%
Health-based (MCL / treatment failure)
255
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Smith Valley Schools

Smith Valley Schools is a local-owned non-transient non-community water system that delivers drinking water to 255 residents in Yerington, Nevada (Lyon County) through 18 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 142 total violations for this system , of which 1 (1%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 135 monitoring and reporting violations are on file. The most recent violation on record dates to 2014.

The most frequently cited contaminant at this system is Nitrite, recorded in 3 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Nevada, EPA tracks 589 public water systems serving 3,455,285 people, with 56,333 cumulative violations and 6,657 health-based violations on record. About 93% of systems in the state carry at least one violation, and state-wide the average per system is 95.6 violations. Statewide, 50 of 57 UCMR5-tested systems have reported PFAS detections (87.7%).

Smith Valley Schools's 142 violations sit above the Nevada average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
255
Total Violations
142
Health-Based Violations
1
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Local
Connections
18
County
Lyon
School/Daycare
Yes
MCL Violations
1
Monitoring Violations
135
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrite MR 3 2008
Arsenic MR 3 2008
Barium MR 3 2002
Cadmium MR 3 2002
Nickel MR 3 2002
Antimony, Total MR 3 2002
Beryllium, Total MR 3 2002
Thallium, Total MR 3 2002
Xylenes, Total MR 3 2008
Vinyl chloride MR 3 2008
1,1-Dichloroethylene MR 3 2008
trans-1,2-Dichloroethylene MR 3 2008
1,1,1-Trichloroethane MR 3 2008
Tetrachloroethylene MR 3 2008
CHLOROBENZENE MR 3 2008
Benzene MR 3 2008
Styrene MR 3 2008
1,1,2-Trichloroethane MR 3 2008
1,2,4-Trichlorobenzene MR 3 2008
Selenium MR 3 2002
Nitrate MR 3 2010
1,2-Dichloropropane MR 3 2008
p-Dichlorobenzene MR 3 2008
Trichloroethylene MR 3 2008
Toluene MR 3 2008
CYANIDE MR 3 2002
cis-1,2-Dichloroethylene MR 3 2008
DICHLOROMETHANE MR 3 2008
Mercury MR 3 2002
Ethylbenzene MR 3 2008

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Smith Valley Schools.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID NV0002189 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Nevada Drinking Water Authority

Nevada's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find NV regulator via EPA SDWIS

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2014 Heptachlor MR 1 SDWIS / NV0002189 / 2065
2014 Di(2-ethylhexyl) adipate MR 1 SDWIS / NV0002189 / 2035
2014 Diquat MR 1 SDWIS / NV0002189 / 2032
2014 Chlordane MR 1 SDWIS / NV0002189 / 2959
2014 Simazine MR 1 SDWIS / NV0002189 / 2037
2014 Methoxychlor MR 1 SDWIS / NV0002189 / 2015
2014 Pentachlorophenol MR 1 SDWIS / NV0002189 / 2326
2014 Toxaphene MR 1 SDWIS / NV0002189 / 2020
2014 ETHYLENE DIBROMIDE MR 1 SDWIS / NV0002189 / 2946
2014 Endothall MR 1 SDWIS / NV0002189 / 2033
2014 Dinoseb MR 1 SDWIS / NV0002189 / 2041
2014 Benzo(a)pyrene MR 1 SDWIS / NV0002189 / 2306
2014 Carbofuran MR 1 SDWIS / NV0002189 / 2046
2014 Di(2-ethylhexyl) phthalate MR 1 SDWIS / NV0002189 / 2039
2014 Dalapon MR 1 SDWIS / NV0002189 / 2031

How Smith Valley Schools Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Smith Valley Schools Nevada avg Federal benchmark
Total violations 142 95.6 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 1 11.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 87.7% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 255 5,866 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 589 regulated public water systems in Nevada.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Smith Valley Schools water safe to drink? ▼
Smith Valley Schools (PWS ID: NV0002189) has 142 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 255 people using Groundwater sources.
How many people does Smith Valley Schools serve? ▼
Smith Valley Schools serves 255 people in Yerington, Nevada. It is a Local-owned system using Groundwater water sources with 18 service connections.
What type of violations does Smith Valley Schools have? ▼
Smith Valley Schools has 142 total violations: 1 health-based violations (MCL exceedances or treatment failures), 135 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Smith Valley Schools water? ▼
No PFAS testing data is available for Smith Valley Schools under the EPA's UCMR5 monitoring program.
What water source does Smith Valley Schools use? ▼
Smith Valley Schools uses Groundwater as its primary water source. It is classified as a Non-Transient Non-Community Water System, serving the same people for at least 6 months per year.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

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

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.