8190.docx

MASSACHUSETTS WATER RESOURCES AUTHORITY

ADVERTISEMENT FOR BIDS

The Massachusetts Water Resources Authority will receive electronic General Bids on the MWRA Supplier Portal (www.mwra.com) for John J. Carroll Water Treatment Plant Carbon Dioxide System Upgrades, MWRA Contract No. 8190, until 2:00 p.m., Wednesday, September 9, 2026, after which the General Bids will be publicly available.

Prior to the receipt of General Bids, the Massachusetts Water Resources Authority will receive Filed Sub-Bids for the sub-trades listed below on the Supplier Portal (www.mwra.com) for John J. Carroll Water Treatment Plant Carbon Dioxide System Upgrades (SUB BIDS), MWRA Contract No. 8190, until 11:30 a.m., Friday, July 31, 2026.

Contract documents will be posted on the Supplier Portal on or after Wednesday, June 24, 2026.

Please Note: The only way to access the contract documents and to submit any bids for this project is to register on the Supplier Portal (www.mwra.com) and join the Plan Holders’ list.

Filed Sub-Bids will be received on the Supplier Portal under Event #6688 – John J. Carroll Water Treatment Plant Carbon Dioxide System Upgrades, MWRA Contract No. 8190. Once Filed Sub-Bids have been received, Event #6688 will be closed and a new bid Event for General Bids will be created on the Supplier Portal. A Filed Sub Bid Tab that delineates the accepted Sub-Bids will be distributed to Plan Holders on the General Bid Event. No paper bids will be accepted for either bid event.

In order to view the Contract documents, General Bidders MUST join the Plan Holders list for the Filed Sub-Bid Event #6688. General Bidders MUST then become a Plan Holder for the new General Bid Event once it opens in order to submit their General Bid.

A pre-bid conference and site visit will be held on Wednesday, July 8, 2026, at 11:00 AM at the John J. Carroll Water Treatment Plant (JJCWTP) in Marlborough, MA. Interested parties must contact Benjamin Winograd at Benjamin.Winograd@mwra.com before 3:00 p.m., on Monday, July 6, 2026 for access information.

The work includes, but is not limited to, upgrades to the Carbon Dioxide Systems at the John J. Carroll Water Treatment Plant, including the removal and disposal of four vaporizers, associated control panels, CO2 piping, accessories, concrete pads and curbing and the installation of two new vaporizers, control panels, CO2 piping and accessories on a new concrete pad.

The estimated project cost is: $787,800.00.

Each General Bid must be accompanied by a current Certificate of Eligibility issued by the Division of Capital Asset Management and Maintenance (DCAMM) showing that the bidder has the classification and capacity rating to perform the Work and an Update Statement. In order to be eligible to bid, a General Bidder must be certified in either of the following categories of work:

Sewage and Water Treatment Plants Mechanical Systems

Each Filed Sub-Bid must be accompanied by a current Certificate of Eligibility issued by DCAMM showing that the Sub-Bidder has been certified to participate on public construction projects and perform the class of work for which the Sub-Bid is submitted. Each Filed Sub-Bid must also be accompanied by an Update Statement. Filed Sub-Bids will be required on the following classes of work:

Division Sub-trades

This contract is subject to n/a MBE and n/a WBE participation requirement.

MASSACHUSETTS WATER RESOURCES AUTHORITY

Douglas J. Rice, Director of Procurement Date: June 20, 2026

S/W-149 P w/ subs 00030-1 Rev. 1-9/17