Rockland Wastewater Plant
587 Rear Summer Street, Rockland, MA 02370 · Plymouth County · Publicly Owned Treatment Works
- Average flow
- 2.21 MGD
- Design flow
- —
- NPDES permit
- MAG590038
- Effective
- Permit expires
- October 2027
- Population served
- —
- CWNS 2022
Rockland Wastewater Plant is a publicly owned wastewater treatment works in Rockland, Plymouth County, Massachusetts treating an average of 2.21 million gallons per day. It discharges under NPDES permit MAG590038 (effective), which expires in October 2027, with 37 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Rockland Wastewater Plant.
Available with a free Klarifi account
See the full treatment train at Rockland Wastewater Plant: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 37
- Effluent violations
- 37
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in Rockland
Rockland's capital improvement plan lists 17 water, sewer and wastewater line items worth $78M starting 2025–2028. The largest budgeted items are shown here.
All water and sewer capital projects in Rockland →
| Project | Budget | Years |
|---|---|---|
| Design replace the influent System including tanks etc. | $40,000,000 | 2028–2028 |
| Sewer Plant Capital Improvements | $32,500,000 | 2025–2027 |
| Water Tanks | $3,000,000 | 2026–2026 |
| Annual Control Plan for I&I | $655,000 | 2025–2029 |
| Water Meter Replacements | $350,000 | 2025–2029 |
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
3 verified contacts for Rockland Wastewater Plant, with validated emails and direct phone numbers.
Unlock 3 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Rockland Wastewater Plant, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Massachusetts
Brockton · 7 mi away
14.52 MGD
Cohasset · 10 mi away
0.18 MGD
Bridgewater · 11 mi away
0.17 MGD
Hull · 14 mi away
1.53 MGD
Middleborough · 14 mi away
1.21 MGD
Winthrop · 17 mi away
270.96 MGD
Plymouth · 18 mi away
1.08 MGD
Taunton · 19 mi away
7.32 MGD
Rockland Wastewater 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 · Sludge dewatering · Biological nutrient removal · all terms