Johnson City STP
857 Riverview Drive, Johnson City, TN 37601 · Washington County · Publicly Owned Treatment Works
- Average flow
- 5.94 MGD
- Design flow
- 16 MGD
- NPDES permit
- TN0024244
- Administratively continued
- Permit expires
- September 2026
- Population served
- 66,934
- CWNS 2022
Johnson City STP is a publicly owned wastewater treatment works in Johnson City, Washington County, Tennessee treating an average of 5.94 million gallons per day against a permitted design capacity of 16 MGD, serving about 66,934 residents. It discharges under NPDES permit TN0024244 (administratively continued), which expires in September 2026, with 18 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Johnson City STP.
Available with a free Klarifi account
See the full treatment train at Johnson City STP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 18
- Effluent violations
- 10
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 Johnson City STP in EPA's ICIS system.
- Formal actions
- 0
- none on record
- EPA inspections
- 2
- latest May 2007
No formal federal enforcement case is on record for this plant.
Full case history with a free Klarifi account
Every action against Johnson City STP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
2 verified contacts for Johnson City STP, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Johnson City STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Tennessee
Johnson City · 3 mi away
3.26 MGD
Elizabethton · 4 mi away
1.93 MGD
Elizabethton · 6 mi away
0.007 MGD
Hampton · 10 mi away
0.0046 MGD
Blountville · 14 mi away
0.0055 MGD
Erwin · 17 mi away
—
Kingsport · 17 mi away
0.008 MGD
Roan Mountain · 19 mi away
0.0028 MGD
Johnson City 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 February 26, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Oxidation ditch · Anaerobic digester · all terms