Black Mtn Utility/dayhoit
EPA ID: KY0480277 · 1,954 people served · 15 ZIP codes
Records for Black Mtn Utility/dayhoit show 10 violations over the monitored period, with every finding addressed and officially closed — the provider, which serves approximately 1,954 people, carries no outstanding enforcement actions in the current EPA dataset and meets all applicable drinking water requirements.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Map
Coverage area for Black Mtn Utility/dayhoit Source: EPA SDWIS service area boundaries.
Service area boundary — Grade C
Service Area Demographics
The Black Mtn Utility/dayhoit serves a community with a median household income of $38,214 and an estimated 10,420 residents across its service area. Approximately 57% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 100% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
🌊 Where Does Your Water Come From?
Black Mtn Utility/dayhoit's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
About 2% of homes in Harlan County, Kentucky rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Infrastructure Risk
Detected Contaminants
How Black Mtn Utility/dayhoit compares to EPA limits
What This Means For You
Total Trihalomethanes (TTHM) at 3 mg/L exceeds the EPA maximum of 0.08 mg/L. Bladder & rectal cancer risk; reproductive concerns. Consider granular activated carbon (GAC) filtration.
Surface Water Treatment Rule at 6 mg/L exceeds the EPA maximum of mg/L.
Contaminant 0800 at 1 mg/L exceeds the EPA maximum of mg/L.
Total Trihalomethanes (TTHM) was detected in this water system. granular activated carbon (GAC) filtration can reduce exposure.
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Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
BLACK MTN UTILITY/DAYHOIT (EPA ID: KY0480277) is a community water system in Kentucky that serves approximately 1,954 people from surface water sources.
This system provides water to 15 ZIP codes across 15 communities.
Average Home Safety Score: C (57/100)
Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.
Violation History
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| January 20, 2025 | Contaminant 0800 | Monitoring | Resolved |
| July 1, 2023 | Surface Water Treatment Rule | Monitoring | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Surface Water Treatment Rule | Treatment Failure | 6 | No |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 3 | No |
| Contaminant 0800 | Other Violation | 1 | No |
Lead & Copper
No Lead and Copper Rule sampling data available for this water system.
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
Coverage: 5 ZIP codes confirmed via EPA Community Water System Service Area Boundaries v3 plus 10 additional ZIPs inferred from SDWIS registry data. The EPA-confirmed set is the most reliable; SDWIS-inferred entries may be narrower than the real deployment area.
- 40801 — Ages Brookside
- 40803 — Asher
- 40806 — Baxter
- 40808 — Big Laurel
- 40810 — Bledsoe
- 40816 — Chappell
- 40819 — Coldiron
- 40824 — Dayhoit
- 40840 — Helton
- 40854 — Loyall
- 40858 — Mozelle
- 40873 — Wallins Creek
- 40874 — Warbranch
- 40913 — Beverly
- 41777 — Yeaddiss
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Black Mtn Utility/dayhoit (KY0480277) on EPA.gov.
Frequently Asked Questions
Is Black Mtn Utility/dayhoit water safe to drink?
Black Mtn Utility/dayhoit has only monitoring/reporting violations, which are procedural in nature. The system meets federal health-based standards.
How many people does Black Mtn Utility/dayhoit serve?
Black Mtn Utility/dayhoit serves approximately 1,954 people across 15 ZIP codes in Kentucky.
Where does Black Mtn Utility/dayhoit get its water?
The primary water source is surface water.
Water Source & Treatment
Where this water originates and how it's treated before reaching your tap.
Source: Black Mtn Utility/dayhoit Consumer Confidence Report.
ZipCheckup is not affiliated with this water utility. Treatment and source data are sourced from the utility's published CCR filings.
Treatment regime
How this utility classifies its treatment process and what each reported treatment chemical does.
Treatment chemicals and what each one does
Chemical names are reported verbatim by the utility. Purpose categories are ZipCheckup annotations based on standard drinking-water treatment practice.
Treatment classification and chemical list sourced from Black Mtn Utility/dayhoit Consumer Confidence Report.
Treatment intensity is a ZipCheckup-derived classification based on the chemicals and processes the utility reports. Chemicals and contamination sources are taken verbatim from the utility's CCR filing. Routine federal monitoring and contaminant testing shown elsewhere on this page determine whether the water meets safety standards, not the treatment classification.
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
This system reports zero confirmed lead service lines in its inventory. Unknown-material counts may still warrant verification.
Federal LCRI rule (effective October 2024) requires every public water system to inventory its service lines and complete lead-line replacement within 10 years.
Source: EPA SDWIS Federal Service Line Inventory (Phase 2) · Submitted 2026
ZipCheckup is not affiliated with the utility or state agency. Inventory figures render verbatim from the public LCRI submission cited above; ZipCheckup does not perform inspections or replacements.
Frequently Asked Questions
What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Black Mtn Utility/dayhoit (EPA ID: KY0480277) — request the latest Consumer Confidence Report or ask about specific contaminants.