# Peirce Island wastewater treatment plant expansion completed in Portsmouth

The $70 million expansion and upgrade of the Peirce Island wastewater treatment plant in Portsmouth, New Hampshire was completed by the end of August 2020. The project added secondary treatment and nitrogen removal, increasing capacity to 6.1 million gallons per day.

- Type: Expansion
- Announced: 2020-09-08
- Where: Portsmouth, New Hampshire, United States
- Value: $70.0M
- Starts operating: Aug 2020
- Status: completed
- Capacity: 6.1 million gallons per day
- Products: wastewater treatment
- Sectors: [Water Treatment Equipment](https://endata.com/sectors/water-treatment-equipment.md)

## Companies

- [City of Portsmouth](https://endata.com/companies/49778.md)
- [AECOM](https://endata.com/companies/3034.md) (partner)
- [Methuen Construction](https://endata.com/companies/49779.md) (partner)
- [Penetron Group](https://endata.com/companies/49780.md) (supplier)

## Sources

- [prweb.com](https://www.prweb.com/releases/penetron-crystalline-technology-helps-pump-up-peirce-island-wastewater-plant-881072306.html), 2020-09-08: "The $70-million upgrade project was the largest single construction project ever undertaken by the City of Portsmouth, New Hampshire."

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Data from Endata (https://endata.com/). Announcements are summarized from public sources and may be incomplete; check the linked originals.