Ycua Regional Wastewater Treatment Plant
2777 State St, Ypsilanti, MI 48198 · Washtenaw County · Publicly Owned Treatment Works
- Average flow
- 23.69 MGD
- Design flow
- —
- NPDES permit
- MIL042676
- Effective
- Permit expires
- December 2030
- Population served
- 220,397
- CWNS 2022
Ycua Regional Wastewater Treatment Plant is a publicly owned wastewater treatment works in Ypsilanti, Washtenaw County, Michigan treating an average of 23.69 million gallons per day, serving about 220,397 residents. It discharges under NPDES permit MIL042676 (effective), which expires in December 2030, with 5 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Ycua Regional Wastewater Treatment Plant.
Available with a free Klarifi account
See the full treatment train at Ycua Regional Wastewater Treatment Plant: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 5
- Effluent violations
- 1
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 Ycua Regional Wastewater Treatment Plant in EPA's ICIS system.
- Formal actions
- 0
- none on record
- EPA inspections
- 1
- latest Aug 2019
No formal federal enforcement case is on record for this plant.
1 informal enforcement action (notices of violation and similar), the latest in Dec 2020.
Full case history with a free Klarifi account
Every action against Ycua Regional Wastewater Treatment Plant with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Industrial users and pretreatment
Industries that discharge process wastewater to Ycua Regional Wastewater Treatment Plant, from the plant's pretreatment programme records.
- Industrial users
- 22
- 3 categorical
- Sampled for PFAS
- 5
- 2023–2024
- Above 12 ng/L PFOS
- 3
- highest 3,000 ng/L
The highest PFOS samples came from Sauk Trail Hills Development (Canton), 3,000 ng/L; Arbor Hills Landfill (GFL) (Northville), 1,100 ng/L; Marsh Plating Corporation (Ypsilanti), 260 ng/L. Most users are in metal finishing and plating and other industries.
Industrial users of Ycua Regional Wastewater Treatment Plant →PFAS sources at all Michigan plants →
Unlock all 22 industrial users of this plant
Discharge flow, federal category, full PFAS sampling history, source documents and contacts for every industrial user of Ycua Regional Wastewater Treatment Plant. Free with a Klarifi account.
Key contacts
23 verified contacts for Ycua Regional Wastewater Treatment Plant, with validated emails and direct phone numbers.
Unlock 23 verified contacts (20 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Ycua Regional Wastewater Treatment Plant, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Michigan
Ann Arbor · 6 mi away
14.38 MGD
Milan · 12 mi away
1.06 MGD
Salem · 12 mi away
0.02 MGD
Saline · 12 mi away
1.33 MGD
Inkster · 13 mi away
1.6 MGD
Carleton · 14 mi away
0.44 MGD
Maybee · 16 mi away
1.1 MGD
Dearborn Heights · 17 mi away
0.8 MGD
Ycua Regional Wastewater Treatment Plant: 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 May 19, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biological nutrient removal · Tertiary treatment · all terms