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Community Water System · PWS KY0810460

Western Mason Co Water District

Dover, Kentucky 41034 - drinking water served from groundwater sources to 2,994 people, tracked in EPA SDWIS and UCMR5.

2,994
People served
104
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 104 drinking-water violations at Western Mason Co Water District - below the Kentucky per-system average.

104
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
2,994
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Western Mason Co Water District

Western Mason Co Water District is a local-owned community water system that delivers drinking water to 2,994 residents in Dover, Kentucky (Mason County) through 1,062 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 104 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 80 monitoring and reporting violations are on file. The most recent violation on record dates to 2015.

The most frequently cited contaminant at this system is Nitrate, recorded in 40 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 Kentucky, EPA tracks 424 public water systems serving 4,570,541 people, with 80,482 cumulative violations and 12,554 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 189.8 violations. Statewide, 107 of 231 UCMR5-tested systems have reported PFAS detections (46.3%).

Western Mason Co Water District's 104 violations sit below the Kentucky 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
2,994
Total Violations
104
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
1,062
County
Mason
School/Daycare
No
MCL Violations
0
Monitoring Violations
80
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate MR 40 1999
Consumer Confidence Rule Other 8 2015
Lead and Copper Rule MR 7 1996
Coliform (TCR) MR 6 1997
TTHM MR 4 2009
Total Haloacetic Acids (HAA5) MR 4 2009
Stage 2 Disinfectants and Disinfection Byproducts Rule MR 4 2010
Public Notice Other 4 2012
Gross Alpha, Excl. Radon and U MR 3 1995
Barium MR 2 1988
Mercury MR 2 1988
Selenium MR 2 1988
Arsenic MR 2 1988
Cadmium MR 2 1988
Chromium MR 2 1988

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 Western Mason Co Water District.

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 KY0810460 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Kentucky Drinking Water Authority

Kentucky'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 KY 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
2015 Consumer Confidence Rule Other 8 SDWIS / KY0810460 / 7000
2012 Public Notice Other 4 SDWIS / KY0810460 / 7500
2010 Stage 2 Disinfectants and Disinfection Byproducts Rule MR 4 SDWIS / KY0810460 / 0600
2009 TTHM MR 4 SDWIS / KY0810460 / 2950
2009 Total Haloacetic Acids (HAA5) MR 4 SDWIS / KY0810460 / 2456
1999 Nitrate MR 40 SDWIS / KY0810460 / 1040
1997 Coliform (TCR) MR 6 SDWIS / KY0810460 / 3100
1996 Lead and Copper Rule MR 7 SDWIS / KY0810460 / 5000
1995 Gross Alpha, Excl. Radon and U MR 3 SDWIS / KY0810460 / 4000
1988 Barium MR 2 SDWIS / KY0810460 / 1010
1988 Mercury MR 2 SDWIS / KY0810460 / 1035
1988 Selenium MR 2 SDWIS / KY0810460 / 1045
1988 Arsenic MR 2 SDWIS / KY0810460 / 1005
1988 Cadmium MR 2 SDWIS / KY0810460 / 1015
1988 Chromium MR 2 SDWIS / KY0810460 / 1020

How Western Mason Co Water District Compares

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

Metric Western Mason Co Water District Kentucky avg Federal benchmark
Total violations 104 189.8 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 0 29.6 Indicates a contaminant exceeded a federal MCL
PFAS detection None 46.3% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 2,994 10,780 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 424 regulated public water systems in Kentucky.

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 Western Mason Co Water District water safe to drink? ▼
Western Mason Co Water District (PWS ID: KY0810460) has 104 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 2,994 people using Groundwater sources.
How many people does Western Mason Co Water District serve? ▼
Western Mason Co Water District serves 2,994 people in Dover, Kentucky. It is a Local-owned system using Groundwater water sources with 1,062 service connections.
What type of violations does Western Mason Co Water District have? ▼
Western Mason Co Water District has 104 total violations: 0 health-based violations (MCL exceedances or treatment failures), 80 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Western Mason Co Water District water? ▼
No PFAS testing data is available for Western Mason Co Water District under the EPA's UCMR5 monitoring program.
What water source does Western Mason Co Water District use? ▼
Western Mason Co Water District 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.