E Norriton Plymouth /norristown
200 Ross Street, Plymouth Meeting, PA 19462 · Montgomery County · Publicly Owned Treatment Works
- Average flow
- 4.25 MGD
- Design flow
- —
- NPDES permit
- PAL026816
- Effective
- Permit expires
- December 2030
- Population served
- —
- CWNS 2022
E Norriton Plymouth /norristown is a publicly owned wastewater treatment plant in Plymouth Meeting, Montgomery County, Pennsylvania treating an average of 4.25 million gallons per day. It discharges under NPDES permit PAL026816 (effective), which expires in December 2030, with 7 recorded violations in the last three years. EPA has recorded 3 formal enforcement actions naming the plant, the latest in April 2004.
Treatment technology
2 treatment structures and unit processes identified at E Norriton Plymouth /norristown.
Available with a free Klarifi account
See the full treatment train at E Norriton Plymouth /norristown: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 7
- Effluent violations
- 6
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 E Norriton Plymouth /norristown in EPA's ICIS system.
- Formal actions
- 3
- 0 since FY2020
- Penalties assessed
- $3,750
- all cases
- EPA inspections
- 1
- latest Nov 2004
Latest case · Apr 2004
EAST NORRITON-PLYMOUTH-WHITPAIN JOINT SEWER AUTHORITY
Administrative order · CWA, NPDES Permit Violations · Final Order With Penalty · Penalty $3,750
EPA's description of the case:
“Respondent failed to issue industrial use permits w/i 5 yr period. Respondent also exceeded its effluent limitations out 15 separate occasions.”
Source: EPA ECHO, civil enforcement case 03-2003-0268.
Full case history with a free Klarifi account
Every action against E Norriton Plymouth /norristown with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
2 verified contacts for E Norriton Plymouth /norristown, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at E Norriton Plymouth /norristown, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Pennsylvania
Bridgeport · 1 mi away
0.39 MGD
Norristown · 1 mi away
4.87 MGD
King Of Prussia · 1 mi away
2.45 MGD
Conshohocken · 3 mi away
1.07 MGD
Lafayette Hill · 3 mi away
0.88 MGD
King Of Prussia · 4 mi away
2.39 MGD
North Wales · 6 mi away
2.55 MGD
Ambler · 6 mi away
3.39 MGD
E Norriton Plymouth /norristown: 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 12, 2026; facility record last updated April 6, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Tertiary treatment · Significant industrial user · all terms