How many employees work at Environmental Science?
Environmental Science Associates has 840 employees, according to Revelio Labs workforce intelligence data. The YoY growth rate is 2.5%.
Data source: Revelio Labs Coverage: Global workforce Latest update: September 2025
About Environmental Science
Philip Williams founded Philip Williams and Associates, Ltd. (PWA) in 1976, a time when river engineers were trained to achieve success by efficiently "plumbing" and draining natural water systems. Phil expanded this single-purpose objective by pioneering new approaches in the field of environmental hydrology. Guided by his disenchantment with engineering projects that devastated or ignored ecological function, Phil promoted a multidisciplinary approach to managing and restoring natural systems in concert with physical and ecological processes. In the last decades, PWA's integration of geomorphology and ecohydraulics within restoration design has become a model for the professional restoration community.
As of September 2025
Environmental Science
workforce metrics
Headcount
840
Avg. Salary
$115k
Tenure
5.5yr
Growth Rate
2.5%
Hiring Rate
Attrition Rate
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Employee Headcount
Interactive chart of Environmental Science annual worldwide employee count from 2023 to 2025.
- Environmental Science total number of employees in 2025 was 851.659, a 2.5% increase from 2024.
- Environmental Science total number of employees in 2024 was 824.653, a 4.6% increase from 2023.
- Environmental Science total number of employees in 2023 was 781.208, a 5.8% increase from 2022.
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Employee Geographic Breakdown
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Active Job Postings
Interactive chart of Environmental Science annual active job postings from 2023 to 2025.
- Environmental Science active job postings in 2025 was 142, a 31.5% decline from 2024.
- Environmental Science active job postings in 2024 was 165, a 42.6% increase from 2023.
- Environmental Science active job postings in 2023 was 107, a 20.2% decline from 2022.
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Employee Sentiment
Sentiment Topics
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