Water treatment plant expansion and Trinity Well infrastructure
RFP 26-1392 EWCRWS Infrastructure and Expansion - Trinity Well and Phase 1D Project, issued by Brazos River Authority.
At a glance
The Brazos River Authority is requesting sealed proposals to design and build two critical expansion phases (1B and 1D) for its East Williamson County Regional Water System treatment plant. Work includes a new Trinity Well cooling tower system, chemical systems upgrades, storage expansion, new clarifiers and filters, and a medium service pump station to increase capacity from 4 MGD to 17 MGD total. Proposals due November 3, 2026.
Key facts
- Issuing agency
- Brazos River Authority
- Solicitation number
- 26-1392
- Portal id
- 545166
- Type
- RFP
- Posted
- Aug 3, 2026
- Response deadline
- Nov 3, 2026, 11:00 AM EST
- Place of performance
- Brazos River Authority - K4600
- Official posting
- Documents, addenda and the procurement contact, free with an account.
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Official description
The BRA is soliciting sealed proposals for the EWCRWS Infrastructure and Expansion The “1B1D PROJECT” represents two critical expansion improvements to the Brazos River Authority’s (BRA) East Williamson County’s Regional Water System Water Treatment Plant (EWCWTP); Phase 1B and Phase 1D. The Phase 1B Trinity Well Infrastructure Improvements will use cooling towers to treat up to 4 MGD of groundwater from the existing Trinity Well #1 for blending with treated surface water from Granger Lake. Trinity Well #1 is located on the campus of the EWCWTP. Additionally, Phase 1B work located at the EWCWTP includes significant chemical monitoring and distribution systems, stormwater system, upgrades to electrical and automation, and access road improvements that provide future buildout resilience. Phase 1B has schedule priority. The Phase 1D Short-term Expansion continues improvements at the EWCWTP to treat up to 13 MGD of additional surface water from Granger Lake by expanding raw water pumping capacity, upgrading storage reservoir inlets, outlets, and pumping capacity, upgrades to existing chemical systems, upgrades to electrical and automation systems, new rapid mix system, two new clarifiers, modify piping at four existing filters, four new additional filter systems, new backwash basin demolition of existing components and structures being replaced or removed, an additional 4.25 MG of finished water storage capacity for storage of blended treated groundwater (from Phase 1B) with treated surface water (from Phase 1D), and access road improvements. Phase 1D also includes a new medium service pump station for transmission of the finished water to the BRA’s existing and potential new customers, while providing future buildout resilience for longer term expansion. Addendum: 10/5/2026 2:51 pm: Addendum No. 8 RFP 26-1392_Submittal Schedule update and Questions and Answers with updated drawings. 9/18/2026 3:36 pm: Addendum No. 7 RFP No. 26-1392 Replace clarifier specs 9/2/2026 11:31 am: Addendum No 5 RFP 26-1392 Sign In Sheet Aug20 1pm 9/2/2026 11:28 am: Addendum No. 4 RFP 26-1392 Sign in Sheet_Aug20 10am Addendum No. 5 RFP 26-1392 Sign in Sheet Aug20 1pm 9/2/2026 11:25 am: Addendum No. 6 RFP 26-132_Change Item-add site visits plus Answers to submitted Questions. 8/18/2026 4:23 pm: Addendum No. 2 RFP 26-1392_Sign-In Sheet Aug18_10AM Addendum No. 3 RFP 26-1392_Sign-In Sheet Aug18_1PM 8/14/2026 10:35 am: Addendum No. 1 RFP 26-1392_Modify Schedule Agency: Brazos River Authority - K4600. Class/Item (NIGP): 15500-Buildings And Structures: Fabricated And Prefabricated; 90900-Building Construction Services, New (Incl. Maintenance And Repair Services); 91148-C.I.P., Preconstruction Services; 91177-Facilities and Other Improvements; 91200-Construction Services, General (Incl. Maintenance And Repair Services); 91238-Construction Services, Hazardous Waste (Incl. Site Management); 91300-Construction Services, Heavy (Incl. Maintenance And Repair Services); 91359-Construction And Upgrades, Wastewater Treatment Plant; 91360-Construction, Water System/Plants, Main And Service Line; 91391-Maintenance And Repair, Wastewater Treatment Plant; 91400-Construction Services, Trade (New Construction); 95108-Facilities and Other Improvements, Fences; 95109-Facilities and Other Improvements; 95115-Infrastructure and Infrastructure Improvements. Posting requirement: 21+ Days for Solicitation Notice. Highway districts: District 1, District 2, District 3, District 4, District 5, District 6, District 7, District 8, District 9, District 10, District 11, District 12, District 13, District 14, District 15, District 16, District 17, District 18, District 19, District 20, District 21, District 22, District 23, District 24, District 25. Attachments: ESBD_545166_1785800787830_RFP No. 26-1392 EWCRWS 1B1D Projects_final.pdf; ESBD_545166_1785800787830_2_VOL1_1B Specs-v2 Updated.pdf; ESBD_545166_1785800787830_3_VOL2_1D Specs-v2 Updated.pdf; ESBD_545166_1785800787830_Attachment 1_1B1D_DWGS-v1_reduced.pdf; ESBD_545166_1785800787830_TXDOT Files July 2026.pdf; ESBD_545166_1786721811232_Addendum No. 1_RFP 26-1392_modify schedule.pdf; ESBD_545166_1787088288474_PreProposal MTG RFP 26-1392_Aug18_10AM.pdf; ESBD_545166_1787088289279_PreProposal MTG RFP 26-1392_Aug18_1PM.pdf; ESBD_545166_1788366382299_Addendum No. 6 RFP 26-1392 1B1D Projects_Add Site Visits_Q&A.pdf; ESBD_545166_1788366583473_PreProposal MTG RFP 26-1392_Aug20_10AM.pdf; ESBD_545166_1788366737021_PreProposal MTG RFP 26-1392_Aug20_1PM.pdf; ESBD_545166_1789763875161_Addendum No. 7 RFP 26-1392_Replace clarifier specs.pdf; ESBD_545166_1791229950880_Addendum No. 8 RFP 26-1392 1B1D Projects_AddSTP_11.04_QandA2.pdf. Status on the portal: Addendum Posted. Solicitation #26-1392.
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