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Community Water System · PWS KY0420194

Graves Co Water Dist - Hickory

Mayfield, Kentucky 42066 - drinking water served from groundwater sources to 4,069 people, tracked in EPA SDWIS and UCMR5.

4,069
People served
415
EPA violations
0
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 415 drinking-water violations at Graves Co Water Dist - Hickory - above the Kentucky per-system average.

415
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
4,069
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Graves Co Water Dist - Hickory

Graves Co Water Dist - Hickory is a local-owned community water system that delivers drinking water to 4,069 residents in Mayfield, Kentucky (Graves County) through 1,370 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 415 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 406 monitoring and reporting violations are on file. The most recent violation on record dates to 2016.

The most frequently cited contaminant at this system is BHC-GAMMA, recorded in 9 violations (MR). 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%).

Graves Co Water Dist - Hickory's 415 violations sit above 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
4,069
Total Violations
415
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
1,370
County
Graves
School/Daycare
No
MCL Violations
0
Monitoring Violations
406
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
BHC-GAMMA MR 9 2002
Toxaphene MR 9 2002
Dalapon MR 9 2002
Diquat MR 9 2002
Di(2-ethylhexyl) adipate MR 9 2002
OXAMYL MR 9 2002
Dinoseb MR 9 2002
Aldicarb sulfoxide MR 9 2002
Carbofuran MR 9 2002
Aldicarb MR 9 2002
Atrazine MR 9 2002
LASSO MR 9 2002
Heptachlor epoxide MR 9 2002
2,4,5-TP MR 9 2002
Total Polychlorinated Biphenyls (PCB) MR 9 2002
1,2-DIBROMO-3-CHLOROPROPANE MR 9 2002
ETHYLENE DIBROMIDE MR 9 2002
Chlordane MR 9 2002
Methoxychlor MR 9 2002
Endothall MR 9 2002
Simazine MR 9 2002
Di(2-ethylhexyl) phthalate MR 9 2002
Picloram MR 9 2002
Hexachlorocyclopentadiene MR 9 2002
Heptachlor MR 9 2002
2,4-D MR 9 2002
HEXACHLOROBENZENE MR 9 2002
Benzo(a)pyrene MR 9 2002
Pentachlorophenol MR 9 2002
Glyphosate MR 9 2002

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 58 samples detected PFAS.

Contaminant Date Result MRL Status
NFDHA 7/12/2023 <20.00 ppt 20.00 ppt Not Detected
PFPeS 7/12/2023 <4.00 ppt 4.00 ppt Not Detected
PFHxA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFTA 7/12/2023 <8.00 ppt 8.00 ppt Not Detected
PFTrDA 7/12/2023 <7.00 ppt 7.00 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
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
PFNA 7/12/2023 <4.00 ppt 4.00 ppt Not Detected
PFOS 7/12/2023 <4.00 ppt 4.00 ppt Not Detected
PFOA 7/12/2023 <4.00 ppt 4.00 ppt Not Detected
PFHpS 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFEESA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
4:2 FTS 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 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
PFDA 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
PFUnA 7/12/2023 <2.00 ppt 2.00 ppt Not Detected
6:2 FTS 7/12/2023 <5.00 ppt 5.00 ppt Not Detected
PFBA 7/12/2023 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 7/12/2023 <5.00 ppt 5.00 ppt Not Detected
ADONA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 7/12/2023 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 7/12/2023 <5.00 ppt 5.00 ppt Not Detected
PFPeA 1/10/2023 <3.00 ppt 3.00 ppt Not Detected
PFUnA 1/10/2023 <2.00 ppt 2.00 ppt Not Detected
PFEESA 1/10/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpS 1/10/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeS 1/10/2023 <4.00 ppt 4.00 ppt Not Detected
NFDHA 1/10/2023 <20.00 ppt 20.00 ppt Not Detected
PFMBA 1/10/2023 <3.00 ppt 3.00 ppt Not Detected
PFMPA 1/10/2023 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 1/10/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 1/10/2023 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 1/10/2023 <5.00 ppt 5.00 ppt Not Detected
PFBA 1/10/2023 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 1/10/2023 <5.00 ppt 5.00 ppt Not Detected
ADONA 1/10/2023 <3.00 ppt 3.00 ppt Not Detected
PFTA 1/10/2023 <8.00 ppt 8.00 ppt Not Detected
11Cl-PF3OUdS 1/10/2023 <5.00 ppt 5.00 ppt Not Detected
PFHxS 1/10/2023 <3.00 ppt 3.00 ppt Not Detected
PFTrDA 1/10/2023 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 1/10/2023 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 1/10/2023 <6.00 ppt 6.00 ppt Not Detected
9Cl-PF3ONS 1/10/2023 <2.00 ppt 2.00 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 Graves Co Water Dist - Hickory.

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 KY0420194 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
2016 Consumer Confidence Rule Other 4 SDWIS / KY0420194 / 7000
2004 TTHM MR 4 SDWIS / KY0420194 / 2950
2002 BHC-GAMMA MR 9 SDWIS / KY0420194 / 2010
2002 Toxaphene MR 9 SDWIS / KY0420194 / 2020
2002 Dalapon MR 9 SDWIS / KY0420194 / 2031
2002 Diquat MR 9 SDWIS / KY0420194 / 2032
2002 Di(2-ethylhexyl) adipate MR 9 SDWIS / KY0420194 / 2035
2002 OXAMYL MR 9 SDWIS / KY0420194 / 2036
2002 Dinoseb MR 9 SDWIS / KY0420194 / 2041
2002 Aldicarb sulfoxide MR 9 SDWIS / KY0420194 / 2043
2002 Carbofuran MR 9 SDWIS / KY0420194 / 2046
2002 Aldicarb MR 9 SDWIS / KY0420194 / 2047
2002 Atrazine MR 9 SDWIS / KY0420194 / 2050
2002 LASSO MR 9 SDWIS / KY0420194 / 2051
2002 Heptachlor epoxide MR 9 SDWIS / KY0420194 / 2067

How Graves Co Water Dist - Hickory Compares

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

Metric Graves Co Water Dist - Hickory Kentucky avg Federal benchmark
Total violations 415 189.8 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 4,069 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 Graves Co Water Dist - Hickory water safe to drink? ▼
Graves Co Water Dist - Hickory (PWS ID: KY0420194) has 415 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 4,069 people using Groundwater sources.
How many people does Graves Co Water Dist - Hickory serve? ▼
Graves Co Water Dist - Hickory serves 4,069 people in Mayfield, Kentucky. It is a Local-owned system using Groundwater water sources with 1,370 service connections.
What type of violations does Graves Co Water Dist - Hickory have? ▼
Graves Co Water Dist - Hickory has 415 total violations: 0 health-based violations (MCL exceedances or treatment failures), 406 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Graves Co Water Dist - Hickory water? ▼
No. Graves Co Water Dist - Hickory was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Graves Co Water Dist - Hickory use? ▼
Graves Co Water Dist - Hickory 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. 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.