Newcastle Public Works Auth.
PO Box 179, Newcastle, OK 73065 · Mcclain County · Publicly Owned Treatment Works
- Average flow
- 0.52 MGD
- Design flow
- 1.5 MGD
- NPDES permit
- OK0028614
- Effective
- Permit expires
- March 2027
- Population served
- 6,259
- CWNS 2022
Newcastle Public Works Auth. is a publicly owned wastewater treatment plant in Newcastle, Mcclain County, Oklahoma treating an average of 0.52 million gallons per day against a permitted design capacity of 1.5 MGD, serving about 6,259 residents. It discharges under NPDES permit OK0028614 (effective), which expires in March 2027, with 92 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Newcastle Public Works Auth..
Available with a free Klarifi account
See the full treatment train at Newcastle Public Works Auth.: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 92
- Effluent violations
- 92
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 Newcastle Public Works Auth. in EPA's ICIS system.
- Formal actions
- 0
- none on record
- EPA inspections
- 0
- none on record
No formal federal enforcement case is on record for this plant.
1 informal enforcement action (notices of violation and similar), the latest in Nov 2023.
Full case history with a free Klarifi account
Every action against Newcastle Public Works Auth. with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
1 verified contact for Newcastle Public Works Auth., with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Newcastle Public Works Auth., plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Oklahoma
Moore · 3 mi away
5.08 MGD
Norman · 10 mi away
9.95 MGD
Valley Brook · 12 mi away
0.05 MGD
Noble · 13 mi away
0.46 MGD
Mustang · 13 mi away
1.37 MGD
Tuttle · 13 mi away
0.05 MGD
Oklahoma City · 15 mi away
37.17 MGD
Del City · 15 mi away
1.9 MGD
Newcastle Public Works Auth.: 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 19, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Lift station · Sludge dewatering · all terms