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Community Water System · PWS KY0430616

Grayson County Water District

Leitchfield, Kentucky 42754 - drinking water served from surface water sources to 20,033 people, tracked in EPA SDWIS and UCMR5.

20,033
People served
186
EPA violations
35
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 186 drinking-water violations at Grayson County Water District, 19% of them health-based - below the Kentucky per-system average.

186
Total EPA violations on record
19%
Health-based (MCL / treatment failure)
20,033
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Grayson County Water District

Grayson County Water District is a local-owned community water system that delivers drinking water to 20,033 residents in Leitchfield, Kentucky (Grayson County) through 9,380 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 186 total violations for this system , of which 35 (19%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 127 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 Total Haloacetic Acids (HAA5), recorded in 28 violations (MCL, health-based). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

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%).

Grayson County Water District's 186 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
20,033
Total Violations
186
Health-Based Violations
35
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
9,380
County
Grayson
School/Daycare
No
MCL Violations
35
Monitoring Violations
127
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Total Haloacetic Acids (HAA5) MCL 28 2018
CARBON, TOTAL MR 26 2019
Simazine MR 25 2016
Consumer Confidence Rule Other 12 2018
Total Haloacetic Acids (HAA5) MR 9 2013
TTHM MR 9 2013
Public Notice Other 8 2018
Coliform (TCR) MCL 7 1997
Coliform (TCR) MR 5 1995
Atrazine MR 5 2015
Asbestos MR 4 1993
Thallium, Total MR 4 2006
Selenium MR 4 2006
Beryllium, Total MR 4 2006
Barium MR 4 2006
Nitrate MR 4 2006
Mercury MR 4 2006
Chlorite MR 4 2024
Nickel MR 4 2006
Cadmium MR 4 2006
Chromium MR 4 2006
Antimony, Total MR 4 2006

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 232 samples detected PFAS.

Contaminant Date Result MRL Status
9Cl-PF3ONS 7/12/2023 <2.00 ppt 2.00 ppt Not Detected
ADONA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 7/12/2023 <5.00 ppt 5.00 ppt Not Detected
PFBA 7/12/2023 <5.00 ppt 5.00 ppt Not Detected
6:2 FTS 7/12/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFMPA 7/12/2023 <4.00 ppt 4.00 ppt Not Detected
PFNA 7/12/2023 <4.00 ppt 4.00 ppt Not Detected
PFMBA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 7/12/2023 <5.00 ppt 5.00 ppt Not Detected
11Cl-PF3OUdS 7/12/2023 <5.00 ppt 5.00 ppt Not Detected
PFUnA 7/12/2023 <2.00 ppt 2.00 ppt Not Detected
PFHxA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFDA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFOS 7/12/2023 <4.00 ppt 4.00 ppt Not Detected
PFHxS 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFEESA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFTrDA 7/12/2023 <7.00 ppt 7.00 ppt Not Detected
PFOA 7/12/2023 <4.00 ppt 4.00 ppt Not Detected
NEtFOSAA 7/12/2023 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 7/12/2023 <6.00 ppt 6.00 ppt Not Detected
NFDHA 7/12/2023 <20.00 ppt 20.00 ppt Not Detected
PFBS 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFTA 7/12/2023 <8.00 ppt 8.00 ppt Not Detected
PFPeS 7/12/2023 <4.00 ppt 4.00 ppt Not Detected
PFHpS 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFOA 7/12/2023 <4.00 ppt 4.00 ppt Not Detected
PFTrDA 7/12/2023 <7.00 ppt 7.00 ppt Not Detected
PFPeA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
NEtFOSAA 7/12/2023 <5.00 ppt 5.00 ppt Not Detected
PFTA 7/12/2023 <8.00 ppt 8.00 ppt Not Detected
PFBS 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxS 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFDA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
11Cl-PF3OUdS 7/12/2023 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 7/12/2023 <2.00 ppt 2.00 ppt Not Detected
ADONA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
NFDHA 7/12/2023 <20.00 ppt 20.00 ppt Not Detected
NMeFOSAA 7/12/2023 <6.00 ppt 6.00 ppt Not Detected
PFUnA 7/12/2023 <2.00 ppt 2.00 ppt Not Detected
PFPeS 7/12/2023 <4.00 ppt 4.00 ppt Not Detected
HFPO-DA 7/12/2023 <5.00 ppt 5.00 ppt Not Detected
PFHpS 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFOS 7/12/2023 <4.00 ppt 4.00 ppt Not Detected

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 Grayson County 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 KY0430616 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
2024 Chlorite MR 4 SDWIS / KY0430616 / 1009
2019 CARBON, TOTAL MR 26 SDWIS / KY0430616 / 2920
2018 Total Haloacetic Acids (HAA5) MCL 28 SDWIS / KY0430616 / 2456
2018 Consumer Confidence Rule Other 12 SDWIS / KY0430616 / 7000
2018 Public Notice Other 8 SDWIS / KY0430616 / 7500
2016 Simazine MR 25 SDWIS / KY0430616 / 2037
2015 Atrazine MR 5 SDWIS / KY0430616 / 2050
2013 Total Haloacetic Acids (HAA5) MR 9 SDWIS / KY0430616 / 2456
2013 TTHM MR 9 SDWIS / KY0430616 / 2950
2006 Thallium, Total MR 4 SDWIS / KY0430616 / 1085
2006 Selenium MR 4 SDWIS / KY0430616 / 1045
2006 Beryllium, Total MR 4 SDWIS / KY0430616 / 1075
2006 Barium MR 4 SDWIS / KY0430616 / 1010
2006 Nitrate MR 4 SDWIS / KY0430616 / 1040
2006 Mercury MR 4 SDWIS / KY0430616 / 1035

How Grayson County Water District Compares

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

Metric Grayson County Water District Kentucky avg Federal benchmark
Total violations 186 189.8 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 35 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 20,033 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 Grayson County Water District water safe to drink? ▼
Grayson County Water District (PWS ID: KY0430616) has 186 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 20,033 people using Surface Water sources.
How many people does Grayson County Water District serve? ▼
Grayson County Water District serves 20,033 people in Leitchfield, Kentucky. It is a Local-owned system using Surface Water water sources with 9,380 service connections.
What type of violations does Grayson County Water District have? ▼
Grayson County Water District has 186 total violations: 35 health-based violations (MCL exceedances or treatment failures), 127 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Grayson County Water District water? ▼
No. Grayson County Water District was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Grayson County Water District use? ▼
Grayson County Water District uses Surface Water 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. PFAS data from EPA UCMR5 monitoring program (2023-2025). 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.