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Community Water System · PWS KY0540328

Nortonville Water Works

Nortonville, Kentucky 42442 - drinking water served from groundwater sources to 2,611 people, tracked in EPA SDWIS and UCMR5.

2,611
People served
225
EPA violations
4
Health-based
Untested
UCMR5 result

The verdict

EPA records 225 drinking-water violations at Nortonville Water Works, 2% of them health-based - above the Kentucky per-system average.

225
Total EPA violations on record
2%
Health-based (MCL / treatment failure)
2,611
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Nortonville Water Works

Nortonville Water Works is a local-owned community water system that delivers drinking water to 2,611 residents in Nortonville, Kentucky (Hopkins County) through 833 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 225 total violations for this system , of which 4 (2%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 184 monitoring and reporting violations are on file. The most recent violation on record dates to 2017.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 31 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%).

Nortonville Water Works's 225 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
2,611
Total Violations
225
Health-Based Violations
4
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
833
County
Hopkins
School/Daycare
No
MCL Violations
4
Monitoring Violations
184
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 31 2015
Consumer Confidence Rule Other 19 2017
Public Notice Other 8 2017
Endrin MR 4 2002
Dalapon MR 4 2002
Diquat MR 4 2002
Di(2-ethylhexyl) phthalate MR 4 2002
Hexachlorocyclopentadiene MR 4 2002
Aldicarb MR 4 2002
2,4-D MR 4 2002
2,4,5-TP MR 4 2002
Pentachlorophenol MR 4 2002
Total Polychlorinated Biphenyls (PCB) MR 4 2002
ETHYLENE DIBROMIDE MR 4 2002
Chlordane MR 4 2002
TTHM MR 4 2004
E. COLI MR 4 2010
Glyphosate MR 4 2002
Heptachlor epoxide MR 4 2002
Atrazine MR 4 2002
Endothall MR 4 2002
Toxaphene MR 4 2002
1,2-DIBROMO-3-CHLOROPROPANE MR 4 2002
Coliform (TCR) MCL 4 2010
Asbestos MR 4 2002
Benzo(a)pyrene MR 4 2002
Heptachlor MR 4 2002
Methoxychlor MR 4 2002
Carbofuran MR 4 2002
HEXACHLOROBENZENE MR 4 2002

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 Nortonville Water Works.

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 KY0540328 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
2017 Consumer Confidence Rule Other 19 SDWIS / KY0540328 / 7000
2017 Public Notice Other 8 SDWIS / KY0540328 / 7500
2015 Coliform (TCR) MR 31 SDWIS / KY0540328 / 3100
2012 Lead and Copper Rule MR 3 SDWIS / KY0540328 / 5000
2010 E. COLI MR 4 SDWIS / KY0540328 / 3014
2010 Coliform (TCR) MCL 4 SDWIS / KY0540328 / 3100
2004 TTHM MR 4 SDWIS / KY0540328 / 2950
2004 Total Haloacetic Acids (HAA5) MR 4 SDWIS / KY0540328 / 2456
2002 Endrin MR 4 SDWIS / KY0540328 / 2005
2002 Dalapon MR 4 SDWIS / KY0540328 / 2031
2002 Diquat MR 4 SDWIS / KY0540328 / 2032
2002 Di(2-ethylhexyl) phthalate MR 4 SDWIS / KY0540328 / 2039
2002 Hexachlorocyclopentadiene MR 4 SDWIS / KY0540328 / 2042
2002 Aldicarb MR 4 SDWIS / KY0540328 / 2047
2002 2,4-D MR 4 SDWIS / KY0540328 / 2105

How Nortonville Water Works Compares

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

Metric Nortonville Water Works Kentucky avg Federal benchmark
Total violations 225 189.8 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 2,611 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 Nortonville Water Works water safe to drink? ▼
Nortonville Water Works (PWS ID: KY0540328) has 225 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 2,611 people using Groundwater sources.
How many people does Nortonville Water Works serve? ▼
Nortonville Water Works serves 2,611 people in Nortonville, Kentucky. It is a Local-owned system using Groundwater water sources with 833 service connections.
What type of violations does Nortonville Water Works have? ▼
Nortonville Water Works has 225 total violations: 4 health-based violations (MCL exceedances or treatment failures), 184 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Nortonville Water Works water? ▼
No PFAS testing data is available for Nortonville Water Works under the EPA's UCMR5 monitoring program.
What water source does Nortonville Water Works use? ▼
Nortonville Water Works 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.