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States → EPA Region 9 — Tribal Water Systems

Community Water System · PWS 093200366

South Fork (Te-Moak)

Elko, EPA Region 9 — Tribal Water Systems 89801 - drinking water served from groundwater sources to 40 people, tracked in EPA SDWIS and UCMR5.

40
People served
186
EPA violations
18
Health-based
Untested
UCMR5 result

The verdict

EPA records 186 drinking-water violations at South Fork (Te-Moak), 10% of them health-based.

186
Total EPA violations on record
10%
Health-based (MCL / treatment failure)
40
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: South Fork (Te-Moak)

South Fork (Te-Moak) is a native american-owned community water system that delivers drinking water to 40 residents in Elko, EPA Region 9 — Tribal Water Systems through 16 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 186 total violations for this system , of which 18 (10%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 129 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 33 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

EPA Region 9 — Tribal Water Systems has thousands of regulated public water systems tracked by EPA under the Safe Drinking Water Act.

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
40
Total Violations
186
Health-Based Violations
18
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Native American
Connections
16
School/Daycare
No
MCL Violations
14
Monitoring Violations
129
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 33 2015
Revised Total Coliform Rule MON 17 2023
Arsenic MR 12 2020
Consumer Confidence Rule Other 12 2024
Arsenic MCL 11 2023
Nitrate MR 11 2019
Public Notice Other 7 2023
TTHM MR 4 2023
Revised Total Coliform Rule RPT 4 2022
Coliform (TCR) MCL 3 2004
Chlorine MR 3 2024
Total Haloacetic Acids (HAA5) MR 3 2022
Groundwater Rule TT 3 2023
Lead and Copper Rule MR 3 2014
Barium MR 2 2001
Fluoride MR 2 2001
Gross Alpha, Excl. Radon and U MR 2 1998
Mercury MR 1 1998
Nitrite MR 1 1996
Antimony, Total MR 1 1998
Thallium, Total MR 1 1998
BHC-GAMMA MR 1 2001
Picloram MR 1 2008
Dinoseb MR 1 2008
DICHLOROMETHANE MR 1 1998
o-Dichlorobenzene MR 1 1998
1,1-Dichloroethylene MR 1 1998
1,2-Dichloroethane MR 1 1998
Carbon tetrachloride MR 1 1998
1,2-Dichloropropane MR 1 1998

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 South Fork (Te-Moak).

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 093200366 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

EPA Region 9 — Tribal Water Systems Drinking Water Authority

EPA Region 9 — Tribal Water Systems'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 09 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
2024 Consumer Confidence Rule Other 12 SDWIS / 093200366 / 7000
2024 Chlorine MR 3 SDWIS / 093200366 / 0999
2023 Revised Total Coliform Rule MON 17 SDWIS / 093200366 / 8000
2023 Arsenic MCL 11 SDWIS / 093200366 / 1005
2023 Public Notice Other 7 SDWIS / 093200366 / 7500
2023 TTHM MR 4 SDWIS / 093200366 / 2950
2023 Groundwater Rule TT 3 SDWIS / 093200366 / 0700
2022 Revised Total Coliform Rule RPT 4 SDWIS / 093200366 / 8000
2022 Total Haloacetic Acids (HAA5) MR 3 SDWIS / 093200366 / 2456
2020 Arsenic MR 12 SDWIS / 093200366 / 1005
2020 Revised Total Coliform Rule TT 1 SDWIS / 093200366 / 8000
2019 Nitrate MR 11 SDWIS / 093200366 / 1040
2016 Revised Total Coliform Rule Other 1 SDWIS / 093200366 / 8000
2015 Coliform (TCR) MR 33 SDWIS / 093200366 / 3100
2014 Lead and Copper Rule MR 3 SDWIS / 093200366 / 5000

How South Fork (Te-Moak) Compares

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

Metric South Fork (Te-Moak) EPA Region 9 — Tribal Water Systems avg Federal benchmark
Total violations 186 - SDWA compliance, any non-zero count is a recorded breach
Health-based violations 18 - Indicates a contaminant exceeded a federal MCL
PFAS detection None - EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 40 - Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across all regulated public water systems in EPA Region 9 — Tribal Water Systems.

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 South Fork (Te-Moak) water safe to drink? ▼
South Fork (Te-Moak) (PWS ID: 093200366) has 186 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 40 people using Groundwater sources.
How many people does South Fork (Te-Moak) serve? ▼
South Fork (Te-Moak) serves 40 people in Elko, EPA Region 9 — Tribal Water Systems. It is a Native American-owned system using Groundwater water sources with 16 service connections.
What type of violations does South Fork (Te-Moak) have? ▼
South Fork (Te-Moak) has 186 total violations: 18 health-based violations (MCL exceedances or treatment failures), 129 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in South Fork (Te-Moak) water? ▼
No PFAS testing data is available for South Fork (Te-Moak) under the EPA's UCMR5 monitoring program.
What water source does South Fork (Te-Moak) use? ▼
South Fork (Te-Moak) uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
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.