Metro Central Wastewater Treatment Plant
Nashville, TN · Davidson County · Publicly Owned Treatment Works
- Average flow
- 88.2 MGD
- Design flow
- —
- NPDES permit
- TNL020575
- Effective
- Permit expires
- December 2030
- Population served
- 649,235
- CWNS 2022
Metro Central Wastewater Treatment Plant is a publicly owned wastewater treatment works in Nashville, Davidson County, Tennessee treating an average of 88.2 million gallons per day, serving about 649,235 residents. Treatment on site includes clarifiers. It discharges under NPDES permit TNL020575 (effective), which expires in December 2030, with 62 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
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Compliance snapshot (last 3 years)
- Total violations
- 62
- Effluent violations
- 62
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
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 Metro Central Wastewater Treatment Plant.
No verified contacts on file yet
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Nearby wastewater treatment plants in Tennessee
Nashville · 4 mi away
21.51 MGD
Nashville · 8 mi away
4.76 MGD
Madison · 9 mi away
12.69 MGD
Nashville · 11 mi away
0.0015 MGD
Ashland City · 13 mi away
0.03 MGD
Ashland City · 16 mi away
—
Ashland City · 17 mi away
—
Gallatin · 17 mi away
0.01 MGD
Metro Central Wastewater Treatment Plant: 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 September 11, 2026; facility record last updated May 25, 2025.