1250 Market St., Ste. 3050, Chattanooga, TN 37402 · Hamilton County · Publicly Owned Treatment Works
Hamilton County Wastewater Treatment Authority, Signal Mountain STP is a publicly owned wastewater treatment works in Chattanooga, Hamilton County, Tennessee treating an average of 0.54 million gallons per day against a permitted design capacity of 0.4 MGD, serving about 8,411 residents. It discharges under NPDES permit TN0021211 (effective), which expires in March 2029, with 126 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in July 2024.
One treatment structure or unit process identified at Hamilton County Wastewater Treatment Authority, Signal Mountain STP.
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See the full treatment train at Hamilton County Wastewater Treatment Authority, Signal Mountain STP: structures, unit processes and planned upgrades, with exact unit counts.
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Federal civil enforcement cases, compliance inspections and informal actions recorded for Hamilton County Wastewater Treatment Authority, Signal Mountain STP in EPA's ICIS system.
Latest case · Jul 2024
HAMILTON COUNTY WATER & WASTEWATER TREATMENT AUTHORITY (WWTA)
Judicial case · CWA, NPDES Discharge without a Permit · Final Order With Penalty · Penalty $598,490 · Compliance actions $300M
EPA's description of the case:
“JULY 15, 2024 - CONSENT DECREE This is a Clean Water Act enforcement case against a water and wastewater utility in Hamilton County, Tennessee (Hamilton County Water and Wastewater Authority, or…”
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Source: EPA ECHO, civil enforcement case 04-2015-9007.
Full case history with a free Klarifi account
Every action against Hamilton County Wastewater Treatment Authority, Signal Mountain STP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Decision-makers at Hamilton County Wastewater Treatment Authority, Signal Mountain STP.
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Chattanooga · 4 mi away
50.56 MGD
Jasper · 13 mi away
0.0035 MGD
Jasper · 17 mi away
0.38 MGD
Dunlap · 18 mi away
0.5 MGD
Monteagle · 30 mi away
0.23 MGD
Charleston · 35 mi away
8.48 MGD
Calhoun · 37 mi away
0.0032 MGD
Cowan · 38 mi away
0.07 MGD
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 November 29, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Oxidation ditch · Anaerobic digester · all terms