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States → West Virginia

Community Water System · PWS WV3302946

Knobley Water System

Keyser, West Virginia 26726 - drinking water served from groundwater sources to 132 people, tracked in EPA SDWIS and UCMR5.

132
People served
346
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 346 drinking-water violations at Knobley Water System - above the West Virginia per-system average.

346
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
132
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Knobley Water System

Knobley Water System is a private-owned community water system that delivers drinking water to 132 residents in Keyser, West Virginia (Mineral County) through 54 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 346 total violations for this system , of which 0 (0%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 277 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Lead and Copper Rule, recorded in 38 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 West Virginia, EPA tracks 774 public water systems serving 1,597,057 people, with 187,590 cumulative violations and 11,480 health-based violations on record. About 99% of systems in the state carry at least one violation, and state-wide the average per system is 242.4 violations. Statewide, 46 of 102 UCMR5-tested systems have reported PFAS detections (45.1%).

Knobley Water System's 346 violations sit above the West Virginia 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
132
Total Violations
346
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
54
County
Mineral
School/Daycare
No
MCL Violations
0
Monitoring Violations
277
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 38 2022
Consumer Confidence Rule Other 35 2025
Coliform (TCR) MR 30 2010
Nitrate MR 21 2024
Public Notice Other 21 2024
TTHM MR 13 2023
Total Haloacetic Acids (HAA5) MR 13 2023
Barium MR 6 2020
Selenium MR 6 2020
Beryllium, Total MR 6 2020
Thallium, Total MR 6 2020
Cadmium MR 6 2020
Antimony, Total MR 6 2020
Groundwater Rule MR 6 2024
Nickel MR 6 2020
Chromium MR 6 2020
Arsenic MR 5 2011
Gross Alpha, Excl. Radon and U MR 5 2008
Fluoride MR 4 2002
Mercury MR 4 2002
CYANIDE MR 4 2002
Chlorine MR 4 2024
Revised Total Coliform Rule MON 4 2024
Methoxychlor MR 2 2011
Simazine MR 2 2011
Hexachlorocyclopentadiene MR 2 2011
Carbofuran MR 2 2011
LASSO MR 2 2011
Heptachlor epoxide MR 2 2011
Benzo(a)pyrene MR 2 2011

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 Knobley Water System.

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 WV3302946 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

West Virginia Drinking Water Authority

West Virginia'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 WV 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
2025 Consumer Confidence Rule Other 35 SDWIS / WV3302946 / 7000
2024 Nitrate MR 21 SDWIS / WV3302946 / 1040
2024 Public Notice Other 21 SDWIS / WV3302946 / 7500
2024 Groundwater Rule MR 6 SDWIS / WV3302946 / 0700
2024 Chlorine MR 4 SDWIS / WV3302946 / 0999
2024 Revised Total Coliform Rule MON 4 SDWIS / WV3302946 / 8000
2023 TTHM MR 13 SDWIS / WV3302946 / 2950
2023 Total Haloacetic Acids (HAA5) MR 13 SDWIS / WV3302946 / 2456
2022 Lead and Copper Rule MR 38 SDWIS / WV3302946 / 5000
2020 Barium MR 6 SDWIS / WV3302946 / 1010
2020 Selenium MR 6 SDWIS / WV3302946 / 1045
2020 Beryllium, Total MR 6 SDWIS / WV3302946 / 1075
2020 Thallium, Total MR 6 SDWIS / WV3302946 / 1085
2020 Cadmium MR 6 SDWIS / WV3302946 / 1015
2020 Antimony, Total MR 6 SDWIS / WV3302946 / 1074

How Knobley Water System Compares

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

Metric Knobley Water System West Virginia avg Federal benchmark
Total violations 346 242.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 0 14.8 Indicates a contaminant exceeded a federal MCL
PFAS detection None 45.1% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 132 2,063 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 774 regulated public water systems in West Virginia.

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 Knobley Water System water safe to drink? ▼
Knobley Water System (PWS ID: WV3302946) has 346 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 132 people using Groundwater sources.
How many people does Knobley Water System serve? ▼
Knobley Water System serves 132 people in Keyser, West Virginia. It is a Private-owned system using Groundwater water sources with 54 service connections.
What type of violations does Knobley Water System have? ▼
Knobley Water System has 346 total violations: 0 health-based violations (MCL exceedances or treatment failures), 277 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Knobley Water System water? ▼
No PFAS testing data is available for Knobley Water System under the EPA's UCMR5 monitoring program.
What water source does Knobley Water System use? ▼
Knobley Water System 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.