PlainWater
States → Kentucky

Community Water System · PWS KY0420534

Graves Co Water Dist - Sedalia

Mayfield, Kentucky 42066 - drinking water served from groundwater sources to 371 people, tracked in EPA SDWIS and UCMR5.

371
People served
469
EPA violations
4
Health-based
Untested
UCMR5 result

The verdict

EPA records 469 drinking-water violations at Graves Co Water Dist - Sedalia, 1% of them health-based - above the Kentucky per-system average.

469
Total EPA violations on record
1%
Health-based (MCL / treatment failure)
371
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Graves Co Water Dist - Sedalia

Graves Co Water Dist - Sedalia is a local-owned community water system that delivers drinking water to 371 residents in Mayfield, Kentucky (Graves County) through 138 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 469 total violations for this system , of which 4 (1%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 444 monitoring and reporting violations are on file. The most recent violation on record dates to 2014.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 15 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%).

Graves Co Water Dist - Sedalia's 469 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
371
Total Violations
469
Health-Based Violations
4
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
138
County
Graves
School/Daycare
No
MCL Violations
4
Monitoring Violations
444
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 15 2006
Nitrate MR 12 2001
TTHM MR 12 2011
Total Haloacetic Acids (HAA5) MR 12 2011
Endrin MR 8 2005
Methoxychlor MR 8 2005
Dalapon MR 8 2005
Glyphosate MR 8 2005
Di(2-ethylhexyl) adipate MR 8 2005
OXAMYL MR 8 2005
Simazine MR 8 2005
Picloram MR 8 2005
Dinoseb MR 8 2005
Hexachlorocyclopentadiene MR 8 2005
Aldicarb sulfoxide MR 8 2005
Carbofuran MR 8 2005
Aldicarb MR 8 2005
Heptachlor MR 8 2005
Heptachlor epoxide MR 8 2005
2,4-D MR 8 2005
HEXACHLOROBENZENE MR 8 2005
Total Polychlorinated Biphenyls (PCB) MR 8 2005
1,2-DIBROMO-3-CHLOROPROPANE MR 8 2005
ETHYLENE DIBROMIDE MR 8 2005
Chlordane MR 8 2005
BHC-GAMMA MR 8 2005
Diquat MR 8 2005
Endothall MR 8 2005
Aldicarb sulfone MR 8 2005
Atrazine MR 8 2005

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 - Sedalia.

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 KY0420534 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
2014 Consumer Confidence Rule Other 6 SDWIS / KY0420534 / 7000
2011 TTHM MR 12 SDWIS / KY0420534 / 2950
2011 Total Haloacetic Acids (HAA5) MR 12 SDWIS / KY0420534 / 2456
2011 Beryllium, Total MR 4 SDWIS / KY0420534 / 1075
2011 Antimony, Total MR 4 SDWIS / KY0420534 / 1074
2011 CYANIDE MR 4 SDWIS / KY0420534 / 1024
2011 Chromium MR 4 SDWIS / KY0420534 / 1020
2011 Barium MR 4 SDWIS / KY0420534 / 1010
2011 Arsenic MR 4 SDWIS / KY0420534 / 1005
2011 Selenium MR 4 SDWIS / KY0420534 / 1045
2011 Cadmium MR 4 SDWIS / KY0420534 / 1015
2011 Thallium, Total MR 4 SDWIS / KY0420534 / 1085
2011 Nickel MR 4 SDWIS / KY0420534 / 1036
2011 Mercury MR 4 SDWIS / KY0420534 / 1035
2011 Public Notice Other 2 SDWIS / KY0420534 / 7500

How Graves Co Water Dist - Sedalia Compares

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

Metric Graves Co Water Dist - Sedalia Kentucky avg Federal benchmark
Total violations 469 189.8 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 4 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 371 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 - Sedalia water safe to drink? ▼
Graves Co Water Dist - Sedalia (PWS ID: KY0420534) has 469 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 371 people using Groundwater sources.
How many people does Graves Co Water Dist - Sedalia serve? ▼
Graves Co Water Dist - Sedalia serves 371 people in Mayfield, Kentucky. It is a Local-owned system using Groundwater water sources with 138 service connections.
What type of violations does Graves Co Water Dist - Sedalia have? ▼
Graves Co Water Dist - Sedalia has 469 total violations: 4 health-based violations (MCL exceedances or treatment failures), 444 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 - Sedalia water? ▼
No PFAS testing data is available for Graves Co Water Dist - Sedalia under the EPA's UCMR5 monitoring program.
What water source does Graves Co Water Dist - Sedalia use? ▼
Graves Co Water Dist - Sedalia 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.