Compliance Status
Halal
Screened on Oct 17, 2026 · AAOIFI Standard 21
Very Good
Is Tetra Tech, Inc. (TTEK) halal? Halal. Based on AAOIFI screening, Tetra Tech, Inc. passes both qualitative (business activity) and quantitative (financial ratio) screens with a compliance score of 89/100 (Grade: A).
Quote this verdict
HalalScreener rates Tetra Tech, Inc. (TTEK) Halal, 89/100, grade A under AAOIFI Standard 21, screened Oct 17, 2026. Source: https://halalscreener.app/en/stock/TTEK
Business activity
What the company sells is permissible.
Company debt
Well clear of the limitHow much the company borrows, compared to its total value. AAOIFI allows up to 30%.
The verdict above is final and free.
Pro members can verify every number behind it: interest-bearing deposits, prohibited income breakdown, and the full AAOIFI math.
Screened according to AAOIFI Standard 21
What this means for you
You can own TTEK
It passes both the business activity and financial ratio screens under AAOIFI Standard 21.
Purification amount is Pro
We have screened TTEK's prohibited income, but the exact share you would need to purify is part of Pro.

TTEK: Is Tetra Tech, Inc. Halal?
Tetra Tech, Inc.
$34.72
Market Cap: 8.9B
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About Tetra Tech, Inc.
Tetra Tech, Inc. operates as a global provider of specialized consulting and engineering services. The firm organizes its activities into two primary divisions: the Government Services Group (GSG) and the Commercial/International Services Group (CIG). The GSG division delivers a comprehensive suite of solutions, encompassing initial data collection and ongoing monitoring, advanced data analytics and information management, practical scientific and engineering research, intricate engineering design, thorough project management, and continuous operations and maintenance support. Furthermore, it offers expert consulting on climate change and energy efficiency, alongside services dedicated to the evaluation, certification, reduction, and overall management of greenhouse gas emissions. This segment primarily supports federal, state, and local governmental bodies, as well as various development agencies. Its areas of expertise include water resource analysis and management, environmental surveillance, data intelligence, public sector advisory, waste disposal solutions, and broad civil infrastructure master planning and engineering initiatives. Conversely, the CIG division provides a similar array of essential services, including early data acquisition and surveillance, data interpretation and information governance, viability studies and assessments, applied science and engineering investigations, engineering scheme development, project execution oversight, and operational sustainment. This segment's clientele spans the natural resources, energy, and utilities industries, in addition to markets focused on sustainable infrastructure master planning and engineering design. Established in 1966, Tetra Tech, Inc. maintains its corporate headquarters in Pasadena, California.
Sector: Industrials · Industry: Engineering & Construction
Shariah Compliance Status
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The verdict above is final and free.
Pro members can verify every number behind it: interest-bearing deposits, prohibited income breakdown, and the full AAOIFI math.
Screened according to AAOIFI Standard 21
Compliance History
Halal, unchanged since May 2026.
No status changes recorded since we began tracking.
Tracked since May 2026. Updates automatically on each re-screen.
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Frequently Asked Questions
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Screened according to AAOIFI Standard No. 21 · For informational purposes only. Consult a qualified Islamic finance advisor before investing.
Disclaimer: This screening is for informational purposes only and does not constitute financial, legal, or religious advice. Compliance is evaluated using AAOIFI financial standards (debt, deposits, and prohibited income ratios) and publicly available data. Ethical, political, social, or environmental considerations are outside the scope of this screening. Individual scholars and methodologies may differ. Always consult a qualified Islamic finance advisor before making investment decisions.