TETRA TECH INC is a engineering services employer in REDDING, CA. Federal records show 1 OSHA inspection with 3 violations and $375 in penalties. All data sourced from public federal enforcement records.
Data sourced from OSHA, DOL WHD, MSHA, EPA ECHO, NLRB, FMCSA, OFLC, BLS, SAM.gov, CMS, USAspending, CPSC, NHTSA, and the UVA Corporate Prosecution Registry. Last updated: May 2, 2026.
TETRA TECH INC
16177 ROCK CREEK RD., REDDING, CA, 96001
Parent: TETRA TECH INC (50 locations)
541330 — Top companies in Engineering Services
EIN: 953983702
151 employees
Industry Benchmark
Data Insights
Inspection Breakdown
Peer Comparison
Labor Relations (NLRB)
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Inspection History
No inspection records found.
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Data aggregated from public federal enforcement and program records (OSHA, WHD, MSHA, EPA, NLRB, FMCSA, OFLC, BLS, SAM.gov, CMS, USAspending, CPSC, NHTSA) plus the UVA Corporate Prosecution Registry. Employer profiles matched by name and location — matching errors may occur. Risk scores computed by FastDOL, not official government assessments. OSHA citations typically appear 3-8 months after the inspection, so very recent enforcement actions may not yet be reflected. Data provided as-is. Report a data error.
Part of a larger organization
TETRA TECH INC is one of 50 establishments in our dataset that roll up under the parent organization TETRA TECH INC. TETRA TECH INC is a SEC public reporter (TTEK), with most recent reported revenue of $5.4B.
Federal enforcement records on TETRA TECH INC represent activity at this specific establishment. The full enforcement footprint of TETRA TECH INC across all 50 of its tracked locations is viewable on the parent profile.
Other establishments operated by TETRA TECH INC
- TETRA TECH, INC. — SANTA ROSA, CA — 2 federal records
- Tetra Tech — San Diego, CA — 2 federal records
- Ardaman & Associates, Inc. — West Palm Beach, FL — 2 federal records
- Tetra Tech — Los Alamos, NM — 2 federal records
- Tetra Tech — PASADENA, CA — 2 federal records
- TETRA TECH INC — OROVILLE, CA — 1 federal record
- Tetra Tech Inc — Albany, GA — 1 federal record
- 59454 - TETRA TECH EC INC — GHENT, KY — 1 federal record
- Tetra Tech EC, Inc — San Diego, CA — 1 federal record
- Tetra Tech — Morris Plains, NJ — 1 federal record
Other employers in Engineering Services within CA
- CANUS CORPORATION — SAN JOSE — 2 federal records
- SOUTHLAND INDUSTRIES, INC — SAN FRANCISCO — 2 federal records
- CLEAN HARBORS ENVIRONMENTAL SERVICES, INC — LONG BEACH — 2 federal records
- KLEINFELDER INC — SAN DIEGO — 2 federal records
- DON CHAPIN COMPANY, INC. — HOLLISTER — 2 federal records
- SUKUT CONSTRUCTION, INC. — FONTANA — 2 federal records
- ABLE ENGINEERING SERVICES — BROOKS — 2 federal records
- ABLE ENGINEERING SERVICES — SAN FRANCISCO — 2 federal records
- BLACK AND VEATCH CORPORATION — RANCHO CORDOVA — 2 federal records
- FORD CONSTRUCTION COMPANY, INC. — TRACY — 2 federal records
Industry context
Within the engineering services industry in CA, TETRA TECH INC ranks in the 76th percentile of OSHA violation frequency across 921 comparable establishments.
OSHA penalty totals rank in the 61th percentile of the same peer group.
The Bureau of Labor Statistics reports an industry-average Total Recordable Incident Rate (TRIR) of 0.5 for the engineering services sector, with a Days Away, Restricted, or Transferred (DART) rate of 0.2. TETRA TECH INC's self-reported DART rate is 0.69, which is above the industry average.
Activity timeline
No federal enforcement activity has been recorded against this establishment in the past 7 years.
Frequently Asked Questions
- What is TETRA TECH INC's OSHA violation history?
- TETRA TECH INC has 1 OSHA inspection on record with 3 violations and $375 in total penalties.
- How does TETRA TECH INC's safety record compare to its industry?
- TETRA TECH INC operates in the engineering services industry. The industry average Total Recordable Incident Rate (TRIR) is 0.5. TETRA TECH INC's self-reported DART rate is 0.69 compared to an industry average of 0.2.
About this data
This profile aggregates federal enforcement records on TETRA TECH INC of REDDING, CA from 17 federal data sources. Records were found in 4 sources: OSHA workplace safety inspections, NLRB labor relations cases, SEC XBRL companyfacts (parent financials), and BLS industry safety benchmarks. The remaining 13 sources were checked and found no matching records: WHD, MSHA, EPA, OFLC, OFCCP, FMCSA, USAspending, SAM.gov, CMS, CPSC, NHTSA, UVA, SEC enforcement.
Establishments are matched across agencies using normalized employer name, state, and ZIP code. The dataset was last refreshed on May 2, 2026. TETRA TECH INC resolves to the parent rollup TETRA TECH INC, which operates 50 establishments in our dataset.
This profile may be incomplete if TETRA TECH INCoperates under multiple legal names, files under variations our entity-matching rules don't yet cover, or maintains records below current matching thresholds. To report a missing record or correction, email corrections@fastdol.com.