City Of Missoula WWTF No Exposure
1100 Clark Fork Lane, Missoula, MT 59808 · Missoula County · Publicly Owned Treatment Works
- Average flow
- 9.3 MGD
- Design flow
- 12 MGD
- NPDES permit
- MT0022594
- Administratively continued
- Permit expires
- April 2020
- Population served
- 47,463
- CWNS 2022
City Of Missoula WWTF No Exposure is a publicly owned wastewater treatment works in Missoula, Missoula County, Montana treating an average of 9.3 million gallons per day against a permitted design capacity of 12 MGD, serving about 47,463 residents. It discharges under NPDES permit MT0022594 (administratively continued), which expires in April 2020, with 8 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in October 2025.
Treatment technology
2 treatment structures and unit processes identified at City Of Missoula WWTF No Exposure.
Available with a free Klarifi account
See the full treatment train at City Of Missoula WWTF No Exposure: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 8
- Effluent violations
- 8
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 City Of Missoula WWTF No Exposure in EPA's ICIS system.
- Formal actions
- 1
- 1 since FY2020
- Penalties assessed
- $1,400
- all cases
- EPA inspections
- 0
- none on record
Latest case · Oct 2025
Missoula Biosolids ESA CWA 309G2E AO For Class I Penalties - Biosolids Expedited Settlement Program
Administrative order · CWA, NPDES Permit Violations · Final Order With Penalty · Penalty $1,400
EPA's description of the case:
“Facility generates Class A biosolids for public sale. The biosolids did not meet the requirements of 503. The facility is using the improper methods. The biosolids could not be verified for metals or…”
Unlock EPA's full description by creating a free account on Klarifi. Create a free account →
Source: EPA ECHO, civil enforcement case 07-2025-0094.
Full case history with a free Klarifi account
Every action against City Of Missoula WWTF No Exposure with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Capital improvement projects in Missoula
Missoula's capital improvement plan lists 46 water, sewer and wastewater line items worth $152M starting 2026–2026. The largest budgeted items are shown here.
All water and sewer capital projects in Missoula →
| Project | Budget | Years |
|---|---|---|
| 2026 Water Distribution CIP | $56,373,464 | 2026–2030 |
| Sewer Main Rehabilitation | $35,260,000 | 2026–2030 |
| Clark Fork River Sewer Crossing | $11,050,000 | 2026–2027 |
| Broadway Building Remodel | $9,331,166 | 2026–2030 |
| Garden City Compost Phase 2 | $8,660,979 | 2026–2026 |
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
3 verified contacts for City Of Missoula WWTF No Exposure, with validated emails and direct phone numbers.
Unlock 3 verified contacts
Names, validated emails and direct phone numbers for decision-makers at City Of Missoula WWTF No Exposure, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Montana
Alberton · 23 mi away
0.04 MGD
Stevensville · 26 mi away
0.47 MGD
St. Ignatius · 30 mi away
0.02 MGD
Charlo · 39 mi away
0.02 MGD
Drummond · 43 mi away
0.13 MGD
Hamilton · 44 mi away
0.67 MGD
Pablo · 44 mi away
—
Ronan · 44 mi away
—
City Of Missoula WWTF No Exposure: 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 April 5, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Equalization tank · Centrate · all terms