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CAROLLO ENGINEERS INC

Vendor code CAR8306145 · investigation view
Total paid (in snapshot)
$7,821,089
23 checks across 1 fund type
Cadence
Apr 15, 2025 → Sep 17, 2026
≈ a check every 24 days (the “drip”)
Traceable to a contract/agreement
$7,821,089
Direct / untraceable
$0 (0%)

Formal procurement records

2 active contract/agreements in the city’s Active Contracts dataset name this vendor. This is the scope they were competitively awarded — and, unlike the delivery-order numbers on the checks below, a solicitation number here is searchable in Austin Finance Online.

NORTHEAST WATER TREATMENT PLANT EXPANSION TO 1.5 MGD →Active
Sole and Single SourceDec 12, 2017 → Dec 1, 2028Dept 6100
$11,662,792 authorized limit$5,228,315 paid(45% of limit)
Solicitation RFQS CLMP215 — look it up in Austin Finance Online →
2016 LARGE W&WW FACILITIES ENGINEERING SERVICES RL →Expired term
Sole and Single SourceMay 18, 2016 → Dec 31, 2023Dept 6100
$20,000,000 authorized limit$17,675,501 paid(88% of limit)
Solicitation RFQS CLMP186 — look it up in Austin Finance Online →

How the City books these payments

The City department & division that cut these checks — this is why one vendor can show up under several programs and funds (each program on the Overview is a department).

DepartmentDivisionAmount · checks
Austin WaterHandcox WTP Resiliency Improvements$5,613,593 · 10
Austin WaterTreatment Plant 4570 Parent$1,726,503 · 10
Austin WaterWalnut Creek Wwtp Headworks Improvements$480,993 · 3

Verify at the source

Every check to this vendor (raw checkbook feed) →
City checkbook dataset (8c6z-qnmj) →
Austin Finance Online — search solicitations / contracts →
Search City Council records for “CAROLLO ENGINEERS INC” →

For scope, start with the solicitation number(s) in the procurement records above — those are searchable in Austin Finance Online. Reading the source-doc column below: a CT number is a contract (it links straight to the contract record). A DO (delivery order) is an internal payment reference against a master agreement — those numbers are not searchable in the solicitations portal, so to find the scope, search Austin Finance Online by vendor name (“CAROLLO ENGINEERS INC”) under Contracts, or use the Council-records search above.

Enterprise (fee-supported)$7,821,089 · 23 checks

DateAmountFund / purposeSource doc
Sep 17, 2026$183,065Wastewater Improvements--NvaCivil EngineeringAustin Water › Treatment Plant 4570 ParentDO 17122004514A
Sep 2, 2026$404,083Water Improvements--NvaCivil EngineeringAustin Water › Handcox WTP Resiliency ImprovementsDO 24112103616
Aug 20, 2026$234,626Wastewater Improvements--NvaCivil EngineeringAustin Water › Treatment Plant 4570 ParentDO 17122004514A
Aug 20, 2026$166,420Wastewater Improvements--NvaCivil EngineeringAustin Water › Walnut Creek Wwtp Headworks ImprovementsDO 25040208395
Aug 13, 2026$412,931Water Improvements--NvaCivil EngineeringAustin Water › Handcox WTP Resiliency ImprovementsDO 24112103616
Jul 20, 2026$180,984Wastewater Improvements--NvaCivil EngineeringAustin Water › Walnut Creek Wwtp Headworks ImprovementsDO 25040208395
Jul 14, 2026$586,111Water Improvements--NvaCivil EngineeringAustin Water › Handcox WTP Resiliency ImprovementsDO 24112103616
Jun 17, 2026$617,759Water Improvements--NvaCivil EngineeringAustin Water › Handcox WTP Resiliency ImprovementsDO 24112103616
May 18, 2026$647,753Water Improvements--NvaCivil EngineeringAustin Water › Handcox WTP Resiliency ImprovementsDO 24112103616
Apr 15, 2026$606,461Water Improvements--NvaCivil EngineeringAustin Water › Handcox WTP Resiliency ImprovementsDO 24112103616
Mar 17, 2026$509,637Water Improvements--NvaCivil EngineeringAustin Water › Handcox WTP Resiliency ImprovementsDO 24112103616
Feb 25, 2026$1,047,129Water Improvements--NvaCivil EngineeringAustin Water › Handcox WTP Resiliency ImprovementsDO 24112103616
Jan 27, 2026$187,713Wastewater Improvements--NvaCivil EngineeringAustin Water › Treatment Plant 4570 ParentDO 17122004514
Jan 6, 2026$174,138Wastewater Improvements--NvaCivil EngineeringAustin Water › Treatment Plant 4570 ParentDO 17122004514
Nov 26, 2025$110,231Wastewater Improvements--NvaCivil EngineeringAustin Water › Treatment Plant 4570 ParentDO 17122004514
Oct 16, 2025$258,775Water Improvements--NvaCivil EngineeringAustin Water › Handcox WTP Resiliency ImprovementsDO 24112103616
Oct 16, 2025$120,263Wastewater Improvements--NvaCivil EngineeringAustin Water › Treatment Plant 4570 ParentDO 17122004514
Sep 24, 2025$109,476Wastewater Improvements--NvaCivil EngineeringAustin Water › Treatment Plant 4570 ParentDO 17122004514
Sep 16, 2025$522,956Water Improvements--NvaCivil EngineeringAustin Water › Handcox WTP Resiliency ImprovementsDO 24112103616
Aug 25, 2025$262,332Wastewater Improvements--NvaCivil EngineeringAustin Water › Treatment Plant 4570 ParentDO 17122004514
May 22, 2025$167,321Wastewater Improvements--NvaCivil EngineeringAustin Water › Treatment Plant 4570 ParentDO 17122004514
May 21, 2025$133,589Wastewater Improvements--NvaCivil EngineeringAustin Water › Walnut Creek Wwtp Headworks ImprovementsDO 25040208395
Apr 15, 2025$177,337Wastewater Improvements--NvaCivil EngineeringAustin Water › Treatment Plant 4570 ParentDO 17122004514

Scope: checks in the current snapshot (2026-10-09) at or above the snapshot’s minimum size. For this vendor’s complete payment history, use the raw checkbook feed linked above.