Harpeth Valley Utility District STP
4063 Old Hickory Blvd., Nashville, TN 37221 · Davidson County · Publicly Owned Treatment Works
- Average flow
- 5.88 MGD
- Design flow
- 10 MGD
- NPDES permit
- TN0074748
- Effective
- Permit expires
- February 2030
- Population served
- 27,220
- CWNS 2022
Harpeth Valley Utility District STP is a publicly owned wastewater treatment works in Nashville, Davidson County, Tennessee treating an average of 5.88 million gallons per day against a permitted design capacity of 10 MGD, serving about 27,220 residents. It discharges under NPDES permit TN0074748 (effective), which expires in February 2030, with 4 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in November 2014.
Treatment technology
2 treatment structures and unit processes identified at Harpeth Valley Utility District STP.
Available with a free Klarifi account
See the full treatment train at Harpeth Valley Utility District STP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 4
- Effluent violations
- 4
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
EPA enforcement history
Federal civil enforcement cases, compliance inspections and informal actions recorded for Harpeth Valley Utility District STP in EPA's ICIS system.
- Formal actions
- 1
- 0 since FY2020
- Compliance actions
- $1M
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Nov 2014
HARPETH VALLEY UTILITY DISTRICT - TENNESSEE
Administrative order · CWA, NPDES Permit Violations · Final Order No Penalty · Compliance actions $1M
Source: EPA ECHO, civil enforcement case 04-2011-4782.
Full case history with a free Klarifi account
Every action against Harpeth Valley Utility District STP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Capital improvement projects in Nashville
Nashville's capital improvement plan lists 36 water, sewer and wastewater line items worth $4.0B starting 2025–2030. The largest budgeted items are shown here.
All water and sewer capital projects in Nashville →
| Project | Budget | Years |
|---|---|---|
| General Water Treatment Plant Replacement and Refurbishment | $1,040,256,000 | 2025–2030 |
| Clean Water Nashville | $750,000,000 | 2025–2030 |
| Water Distribution Projects | $667,000,000 | 2025–2030 |
| Biosolids and Odor Control | $441,478,200 | 2025–2030 |
| Dry Creek Wastewater Treatment Plant | $172,493,000 | 2025–2025 |
Full project details — scope, funding source, engineering consultant and the decision-makers behind each project — are available in Klarifi, along with similar wastewater capital projects in other cities.
Key contacts
Decision-makers at Harpeth Valley Utility District STP.
No verified contacts on file yet
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Nearby wastewater treatment plants in Tennessee
Nashville · 4 mi away
32.64 MGD
Nashville · 8 mi away
103.22 MGD
Ashland City · 8 mi away
0.04 MGD
Kingston Springs · 11 mi away
0.18 MGD
Ashland City · 11 mi away
1.37 MGD
Ashland City · 12 mi away
—
Fairview · 14 mi away
0.49 MGD
Franklin · 14 mi away
9.77 MGD
Harpeth Valley Utility District STP: frequently asked questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed October 26, 2026; facility record last updated May 25, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · FOG · Equalization tank · all terms