Over Six Decades of Service

Analytical Chemistry & Microbiology Experts

We are located in the heart of the California agricultural community and provide services to clients across the nation. We have accumulated six decades of experience in analyzing and solving a wide spectrum of complex problems involving soil, leaf tissue, compost, drinking water, surface water, wastewater, and environmental remediation. Additionally, we have developed testing programs for new fields such as biodegradable and compostable products, biofuels, and biochars.

Analytical Services We Provide


Drinking Water & Wastewaters

  • Microbiology
  • Chemistry

Agricultural Testing

  • Soils - to determine amendments needed
  • Compost - to determine quality, stability, and lack of plant toxicity
  • Anaerobic digestion materials
  • Leaf Tissue - to judge nutrient balance in plants
  • Very important to maximize quality and yield
  • Irrigation Waters - analysis of minerals
  • Combined with soil analysis can help determine what practices need to be changed
Men Checking On Plant - Microbiology Services in Watsonville, CA

Compostable & Biodegradable Products

  • NF T-51 800 Home Compostability (BPI's Home Compostable Program)
  • ASTM D6400 (Industrial Compostability)
  • ASTM D6868 (Industrial Compostability)
  • EN 13432 (Industrial Compostability)

Biochars

  • Testing Finished Product - IBI Protocol using ANSI S668 approved methods
  • Analysis of Feedstocks for Producing Biochar
Technician collecting sample for surface water testing.

Water Testing FAQs for Control Laboratories

  • What types of water testing services are available in Monterey, CA?

    Control Laboratories provides professional testing for drinking water, surface water, and environmental samples. A trusted water testing service in Monterey CA helps identify contaminants such as bacteria, minerals, and chemical pollutants. Surface water testing in Monterey, CA is especially important for monitoring lakes, streams, and runoff sources. These services support regulatory compliance, environmental protection, and informed decision-making for homeowners, businesses, and municipalities.

  • How much does a water testing service in Monterey CA usually cost?

    The cost of a water testing service in Monterey CA depends on the type of water source, number of parameters tested, and regulatory requirements. Basic testing may be more affordable, while comprehensive panels or surface water testing in Monterey, CA can cost more due to laboratory analysis depth. Pricing is typically explained upfront after understanding testing goals. Investing in accurate testing helps prevent health risks, environmental damage, and costly remediation later.

  • What is the difference between surface water testing and drinking water testing?

    Drinking water testing focuses on safety for human consumption, while surface water testing in Monterey, CA evaluates environmental quality in rivers, lakes, and reservoirs. A water testing service in Monterey CA uses different standards and methods depending on water use and regulations. Surface water testing often measures runoff impact, pollutants, and ecological health. Understanding this comparison ensures the correct testing approach is chosen for compliance, safety, and environmental monitoring needs.

  • What is the process for professional water testing?

    The process begins with proper sample collection following strict guidelines to avoid contamination. Samples are transported to the lab for analysis using certified methods. A reliable water testing service in Monterey CA then provides detailed reports explaining results and compliance status. For surface water testing in Monterey, CA, results may also highlight environmental trends or concerns. This structured process ensures accuracy, reliability, and actionable insights for clients.

  • How often should water testing be done to maintain safe water quality?

    Water testing frequency depends on the water source, usage, and regulatory requirements. Private systems and environmental sources often benefit from routine monitoring, especially after environmental changes. Regular surface water testing in Monterey, CA helps detect pollution early, while ongoing testing protects public health. To schedule professional testing or learn more about maintenance plans, contact Control Laboratories today at (831) 724-5422 for expert guidance and dependable service.

A person in a white coat holds a tube of sand, likely for analysis in a soil testing laboratory

Benefits of Our Soil Testing Laboratory & Water Quality Testing


At Control Laboratories, our soil testing laboratory and water quality testing services provide reliable analysis designed to support agriculture, environmental safety, and regulatory compliance. Our advanced laboratory testing helps clients make informed decisions about soil conditions, crop management, and water safety.


Here are some key benefits of choosing our professional testing services:

•    Advanced Soil Analysis for Land Management: Our laboratory evaluates soil nutrients, pH levels, and trace elements to determine the best amendments for healthy crops and effective land management.

•    Comprehensive Water Safety Evaluation: We analyze drinking water, irrigation water, and wastewater to detect bacteria, minerals, and chemical contaminants that could impact health or productivity.

•    Improved Agricultural Performance: By combining soil and water testing data, our experts help farmers and agricultural professionals optimize fertilization strategies and improve crop yield.

•    Environmental Protection and Monitoring: Our testing services help identify potential contamination risks in soil and water, supporting responsible environmental management and protection.

•    Trusted Laboratory Expertise: With decades of industry experience and advanced analytical technology, Control Laboratories delivers accurate, dependable results that clients can trust for critical decisions.

Get Accurate Soil Analysis Today


If you need reliable results for your agricultural or environmental projects, our soil testing laboratory is here to help. At Control Laboratories, we provide precise soil analysis to support better crop management, land development, and environmental protection. Contact us today at (831) 724-5422 or visit our contact page to learn more about our professional testing services and how our experienced team can deliver the accurate data you need to make confident decisions.

Learn More


For more information about our services, call Control Laboratories at (831) 724-5422 today.