Milton Wastewater Treatment Plant
Milton, DE · Sussex County · Publicly Owned Treatment Works
- Average flow
- 0.23 MGD
- Design flow
- —
- NPDES permit
- DE0021491
- Expired
- Permit expires
- April 2016
- Population served
- —
- CWNS 2022
Milton Wastewater Treatment Plant is a publicly owned wastewater treatment works in Milton, Sussex County, Delaware treating an average of 0.23 million gallons per day. Treatment on site includes clarifiers. It discharges under NPDES permit DE0021491 (expired), which expires in April 2016, with 11 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
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Compliance snapshot (last 3 years)
- Total violations
- 11
- Effluent violations
- 11
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in Milton
Milton's capital improvement plan lists 10 water, sewer and wastewater line items worth $5M starting 2026–2030. The largest budgeted items are shown here.
All water and sewer capital projects in Milton →
| Project | Budget | Years |
|---|---|---|
| Water Main Replacement - Union Street | $1,400,000 | 2028–2028 |
| Water Main Replacement - Federal Street | $1,320,000 | 2028–2028 |
| Water Main Replacement - Route 16 | $1,290,000 | 2028–2028 |
| Water Main Replacement - Pine / Spruce | $362,274 | 2029–2029 |
| Water Main Replacement - Hemlock/Boxwood Street | $286,024 | 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
Decision-makers at Milton Wastewater Treatment Plant.
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Nearby wastewater treatment plants in Delaware
Lewes · 9 mi away
1.05 MGD
Seaford · 19 mi away
1.57 MGD
Laurel · 21 mi away
0.34 MGD
Frankford · 21 mi away
4.6 MGD
Selbyville · 22 mi away
1.26 MGD
Port Penn · 53 mi away
0.03 MGD
Delaware City · 57 mi away
0.37 MGD
Wilmington · 67 mi away
78.67 MGD
Milton 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 September 11, 2026; facility record last updated September 1, 2025.