Metro Central Wastewater Treatment Plant
1600 2nd Ave N, Nashville, TN 37208 · Davidson County · Publicly Owned Treatment Works
- Average flow
- 103.22 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 103.22 million gallons per day, serving about 649,235 residents. It discharges under NPDES permit TNL020575 (effective), which expires in December 2030, with 63 recorded violations in the last three years. EPA has recorded 2 formal enforcement actions naming the plant, the latest in March 2022.
Treatment technology
One treatment structure or unit process identified at Metro Central Wastewater Treatment Plant.
Available with a free Klarifi account
See the full treatment train at Metro Central Wastewater Treatment Plant: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 63
- Effluent violations
- 63
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 Metro Central Wastewater Treatment Plant in EPA's ICIS system.
- Formal actions
- 2
- 1 since FY2020
- Penalties assessed
- $566,138
- all cases
- Compliance actions
- $400M
- required by EPA orders
- EPA inspections
- 6
- latest Jun 2021
Latest case · Mar 2022
METRO DEPARTMENT OF WATER SERVICES
Administrative order · CAA, Prevention of Accidental Release/Risk Management Plans (RMPs) · Final Order With Penalty · Penalty $2,100 · Compliance actions $100
Source: EPA ECHO, civil enforcement case 04-2022-0200.
Full case history with a free Klarifi account
Every action against Metro Central Wastewater Treatment Plant 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 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
32.64 MGD
Nashville · 8 mi away
5.88 MGD
Madison · 9 mi away
16.24 MGD
Nashville · 11 mi away
0.02 MGD
Ashland City · 13 mi away
0.04 MGD
Ashland City · 16 mi away
1.37 MGD
Ashland City · 17 mi away
—
Gallatin · 17 mi away
0.02 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 October 26, 2026; facility record last updated May 25, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biological nutrient removal · Tertiary treatment · all terms