East Helena WWTF
Plant Road West Off Valley Drive, East Helena, MT 59635 · Lewis And Clark County · Publicly Owned Treatment Works
- Average flow
- 0.18 MGD
- Design flow
- 0.43 MGD
- NPDES permit
- MT0022560
- Administratively continued
- Permit expires
- November 2024
- Population served
- 1,944
- CWNS 2022
East Helena WWTF is a publicly owned wastewater treatment works in East Helena, Lewis And Clark County, Montana treating an average of 0.18 million gallons per day against a permitted design capacity of 0.43 MGD, serving about 1,944 residents. It discharges under NPDES permit MT0022560 (administratively continued), which expires in November 2024, with 72 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at East Helena WWTF.
Available with a free Klarifi account
See the full treatment train at East Helena WWTF: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 72
- Effluent violations
- 72
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for East Helena WWTF, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at East Helena WWTF, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Montana
Helena · 4 mi away
3.01 MGD
Townsend · 26 mi away
0.23 MGD
Boulder · 28 mi away
0.08 MGD
Wolf Creek · 29 mi away
0.003 MGD
Deer Lodge · 41 mi away
1.13 MGD
White Sulphur Springs · 48 mi away
0.05 MGD
Warm Springs · 50 mi away
0.13 MGD
Three Forks · 53 mi away
0.44 MGD
East Helena WWTF: 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 August 18, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biosolids · Filter press · all terms