Community Water System · PWS KY0870298
Mt Sterling Water Works
Mt Sterling, Kentucky 40353 - drinking water served from surface water sources to 16,391 people, tracked in EPA SDWIS and UCMR5.
- 16,391
- People served
- 388
- EPA violations
- 95
- Health-based
- No PFAS
- UCMR5 result
The verdict
EPA records 388 drinking-water violations at Mt Sterling Water Works, 24% of them health-based - above the Kentucky per-system average.
- 388
- Total EPA violations on record
- 24%
- Health-based (MCL / treatment failure)
- 16,391
- People served by this system
- 0
- PFAS compounds detected (UCMR5)
Water Quality Snapshot: Mt Sterling Water Works
Mt Sterling Water Works is a local-owned community water system that delivers drinking water to 16,391 residents in Mt Sterling, Kentucky (Montgomery County) through 6,331 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 388 total violations for this system , of which 95 (24%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 186 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.
The most frequently cited contaminant at this system is Total Haloacetic Acids (HAA5), recorded in 69 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%).
Mt Sterling Water Works's 388 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.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 6,331
- County
- Montgomery
- School/Daycare
- No
- MCL Violations
- 95
- Monitoring Violations
- 186
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Total Haloacetic Acids (HAA5) | MCL | 69 | 2023 |
| TTHM | MCL | 22 | 2004 |
| Coliform (TCR) | MR | 12 | 2003 |
| p-Dichlorobenzene | MR | 12 | 2003 |
| Vinyl chloride | MR | 12 | 2003 |
| 1,1-Dichloroethylene | MR | 12 | 2003 |
| 1,2-Dichloroethane | MR | 12 | 2003 |
| 1,1,1-Trichloroethane | MR | 12 | 2003 |
| Carbon tetrachloride | MR | 12 | 2003 |
| Trichloroethylene | MR | 12 | 2003 |
| Benzene | MR | 12 | 2003 |
| Consumer Confidence Rule | Other | 10 | 2007 |
| TTHM | MR | 8 | 2013 |
| Coliform (TCR) | MCL | 4 | 1993 |
| Nitrate | MR | 4 | 1996 |
| 1,2,4-Trichlorobenzene | MR | 4 | 2003 |
| cis-1,2-Dichloroethylene | MR | 4 | 2003 |
| 1,2-Dichloropropane | MR | 4 | 2003 |
| Tetrachloroethylene | MR | 4 | 2003 |
| Styrene | MR | 4 | 2003 |
| Total Haloacetic Acids (HAA5) | MR | 4 | 2013 |
| 2,3,7,8-TCDD | MR | 4 | 2002 |
| Xylenes, Total | MR | 4 | 2003 |
| DICHLOROMETHANE | MR | 4 | 2003 |
| CHLOROBENZENE | MR | 4 | 2003 |
| Ethylbenzene | MR | 4 | 2003 |
| trans-1,2-Dichloroethylene | MR | 4 | 2003 |
| 1,1,2-Trichloroethane | MR | 4 | 2003 |
| o-Dichlorobenzene | MR | 4 | 2003 |
| Toluene | MR | 4 | 2003 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 116 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFHxA | 9/26/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDA | 9/26/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFOA | 9/26/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOS | 9/26/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFNA | 9/26/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHxS | 9/26/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 9/26/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| NMeFOSAA | 9/26/2024 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFTA | 9/26/2024 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFUnA | 9/26/2024 | <2.00 ppt | 2.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 9/26/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBS | 9/26/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeA | 9/26/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeS | 9/26/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFDoA | 9/26/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpS | 9/26/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| 9Cl-PF3ONS | 9/26/2024 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFMBA | 9/26/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| NFDHA | 9/26/2024 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFMPA | 9/26/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| 8:2 FTS | 9/26/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 9/26/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| 6:2 FTS | 9/26/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBA | 9/26/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| NEtFOSAA | 9/26/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| HFPO-DA | 9/26/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTrDA | 9/26/2024 | <7.00 ppt | 7.00 ppt | Not Detected |
| ADONA | 9/26/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 9/26/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 6/26/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| NMeFOSAA | 6/26/2024 | <6.00 ppt | 6.00 ppt | Not Detected |
| NEtFOSAA | 6/26/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTA | 6/26/2024 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFTrDA | 6/26/2024 | <7.00 ppt | 7.00 ppt | Not Detected |
| PFPeA | 6/26/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMBA | 6/26/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 6/26/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| NFDHA | 6/26/2024 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFBS | 6/26/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxS | 6/26/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFNA | 6/26/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOS | 6/26/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOA | 6/26/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| 6:2 FTS | 6/26/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFPeS | 6/26/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| 4:2 FTS | 6/26/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDA | 6/26/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBA | 6/26/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| HFPO-DA | 6/26/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| ADONA | 6/26/2024 | <3.00 ppt | 3.00 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 Mt Sterling Water Works.
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 KY0870298 on SDWISSource: EPA SDWIS Federal Reports Search
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 SDWISViolation 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 |
|---|---|---|---|---|
| 2023 | Total Haloacetic Acids (HAA5) | MCL | 69 | SDWIS / KY0870298 / 2456 |
| 2013 | TTHM | MR | 8 | SDWIS / KY0870298 / 2950 |
| 2013 | Total Haloacetic Acids (HAA5) | MR | 4 | SDWIS / KY0870298 / 2456 |
| 2007 | Consumer Confidence Rule | Other | 10 | SDWIS / KY0870298 / 7000 |
| 2004 | TTHM | MCL | 22 | SDWIS / KY0870298 / 2950 |
| 2003 | Coliform (TCR) | MR | 12 | SDWIS / KY0870298 / 3100 |
| 2003 | p-Dichlorobenzene | MR | 12 | SDWIS / KY0870298 / 2969 |
| 2003 | Vinyl chloride | MR | 12 | SDWIS / KY0870298 / 2976 |
| 2003 | 1,1-Dichloroethylene | MR | 12 | SDWIS / KY0870298 / 2977 |
| 2003 | 1,2-Dichloroethane | MR | 12 | SDWIS / KY0870298 / 2980 |
| 2003 | 1,1,1-Trichloroethane | MR | 12 | SDWIS / KY0870298 / 2981 |
| 2003 | Carbon tetrachloride | MR | 12 | SDWIS / KY0870298 / 2982 |
| 2003 | Trichloroethylene | MR | 12 | SDWIS / KY0870298 / 2984 |
| 2003 | Benzene | MR | 12 | SDWIS / KY0870298 / 2990 |
| 2003 | 1,2,4-Trichlorobenzene | MR | 4 | SDWIS / KY0870298 / 2378 |
How Mt Sterling Water Works Compares
Cross-reference this system's record against state averages and the federal MCL framework for context.
| Metric | Mt Sterling Water Works | Kentucky avg | Federal benchmark |
|---|---|---|---|
| Total violations | 388 | 189.8 | SDWA compliance, any non-zero count is a recorded breach |
| Health-based violations | 95 | 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 | 16,391 | 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 Mt Sterling Water Works water safe to drink? ▼
How many people does Mt Sterling Water Works serve? ▼
What type of violations does Mt Sterling Water Works have? ▼
Has PFAS been detected in Mt Sterling Water Works water? ▼
What water source does Mt Sterling Water Works use? ▼
Where does this data come from? ▼
Read our methodology - how this data is sourced, computed, and verified.
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.