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Water Tester Jobs in Delaware (NOW HIRING)

Sun, Inc.

Performs water testing and other maintenance duties related to a well-water system, sewer system, or on-site water meters, if applicable. May include reading, repairing, and installing water meters.

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Water Tester information

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$5

$29

How much do water tester jobs pay per hour?

As of Aug 22, 2026, the average hourly pay for water tester in Delaware is $28.87, according to ZipRecruiter salary data. Most workers in this role earn between $28.89 and $28.89 per hour, depending on experience, location, and employer.

What is a water tester?

A water tester works under the guidelines of EPA standards to test water quality at waste treatment plants and throughout freshwater systems. You do this to promote and protect the public health. As a water tester, your duties are to take samples of water from a plant and test its quality using specialized skills and equipment. Your goal is to test the levels of harmful materials and chemicals in the water supply through biological sampling and chemical testing. Your responsibilities are incredibly important because of the threat to public health that improper testing of chemicals in our water systems can cause.

What are the key skills and qualifications needed to thrive as a water tester, and why are they important?

To thrive as a Water Tester, you need a solid understanding of environmental science, chemistry, and water quality standards, often supported by a relevant degree or certification. Familiarity with laboratory testing equipment, water sampling procedures, and data analysis software is essential. Attention to detail, strong organizational skills, and effective communication help ensure accurate results and clear reporting. These skills are crucial for maintaining public health and environmental safety by ensuring water sources meet regulatory standards.

What are some common challenges faced by water testers in the field, and how can they be managed?

Water Testers often work in diverse environments, from treatment plants to natural water sources, which can present challenges such as difficult terrain, inclement weather, and ensuring sample integrity during transport. Managing these obstacles requires strong attention to detail, adherence to safety protocols, and the ability to adapt to varying site conditions. Regular training on sampling techniques and equipment maintenance, as well as effective communication with laboratory teams, helps ensure accurate results and efficient workflows.

What is the difference between Water Tester vs Water Quality Analyst?

AspectWater TesterWater Quality Analyst
CertificationsWater testing certifications, EPA certificationsSame certifications often required, plus laboratory certifications
Work EnvironmentField testing sites, water treatment plantsLaboratories, research facilities, field sites
Job FocusCollecting samples, performing basic testsAnalyzing data, interpreting results, reporting
Employer & IndustryWater treatment plants, environmental agenciesEnvironmental consulting firms, government agencies

Water Testers primarily perform field sampling and basic testing of water samples, while Water Quality Analysts focus on detailed data analysis and reporting. Both roles require similar certifications and work in related environments, but the Analyst role involves more in-depth analysis and interpretation of water quality data.

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Water Tester jobs near you
Infographic showing various Water Tester job openings in Delaware as of August 2026, with employment types broken down into 1% As Needed, 80% Full Time, 15% Part Time, 1% Temporary, 2% Contract, and 1% Nights. Highlights an 95% Physical, 2% Hybrid, and 3% Remote job distribution, with an average salary of $60,051 per year, or $28.9 per hour.

Senior System Test & Validation Engineer

Waters Corporation

New Castle, DE • On-site

Full-time

This job post has expired today. Applications are no longer accepted.

Job description

Why This Role Matters

We build complex, connected scientific instruments that combine embedded software, Linux-based platforms, cloud services, and web applications. This role sits at the system level—where real-world device behavior meets software quality—and ensures our platforms are robust, reliable, and ready for production and field use.

You’ll own system-level validation across hardware, firmware, backend services, and web interfaces, working closely with product, firmware, software, and manufacturing teams.


What You’ll Do System-Level Testing & Validation
  • Design and execute system-level test strategies for Linux-based IoT and connected instrument platforms
  • Validate end-to-end workflows across device firmware, edge services, backend APIs, and web UI
  • Perform functional, integration, regression, performance, and reliability testing
  • Test system behavior under real-world conditions (network latency, device failures, power cycling, upgrades, stress scenarios)
Hardware–Software Integration
  • Test instrument bring-up, initialization, calibration, and recovery across firmware updates and fault conditions
  • Validate operation under environmental and operational stress (temperature, vibration, long-duration runs)
  • Lead and support cross-disciplinary root cause analysis involving software, firmware, electronics, and mechanical subsystems
  • Use logs, telemetry, and lab tools (e.g., multimeter, oscilloscope, logic analyzer) to diagnose complex system issues
Automation & CI/CD (System Focus)
  • Develop and maintain automated tests at the system, API, and web layers (Python preferred)
  • Integrate automated tests into CI/CD pipelines to support continuous quality and release readiness
  • Collaborate with DevOps and development teams on build verification, deployment validation, and preproduction testing

Manufacturing & Field Support (Collaboration-Oriented)

  • Support manufacturing and service teams by validating system-level test coverage and diagnostics
  • Reproduce field and manufacturing issues in lab environments and help drive corrective actions
  •  

What We’re Looking For (MustHave)

  • 5+ years of experience in system testing, validation, or quality engineering for complex products
  • Hands-on experience with Linux-based systems, embedded platforms, or IoT devices
  • Proven ability to validate end-to-end systems spanning hardware and software
  • Experience with test automation and scripting (Python strongly preferred)
  • Strong troubleshooting and root cause analysis skills across hardware–software boundaries
  • Comfort working in a lab environment with physical devices or instruments

Strong Plus (Not Required)

  • Experience testing web applications, APIs, and backend services
  • CI/CD pipeline integration (Jenkins, GitHub Actions, GitLab CI, Azure DevOps)
  • Docker or containerized deployments
  • Exposure to cloud-connected systems (AWS, Azure, or GCP)
  • Performance, reliability, or long-duration system testing
  • Observability tools (logs, metrics, traces)

What You’ll Get

  • Ownership of system-level quality for a real-world, high-impact product
  • Close collaboration with firmware, hardware, software, and product teams
  • A role where testing is proactive and influential, not reactive
  • Clear growth path toward senior system or principal-level engineering roles

Waters Corporation (NYSE:WAT) is a global leader in life sciences and diagnostics, dedicated to accelerating the benefits of pioneering science through analytical technologies, informatics, and service. With a focus on regulated, high-volume testing environments, our innovative portfolio harnesses deep scientific expertise across chemistry, physics, and biology. We collaborate with customers around the world to advance the release of effective, high-quality medicines, ensure the safety of food and water, and drive better patient outcomes by detecting diseases earlier, managing routine infections, and combating antibiotic resistance. Through a shared culture of relentless innovation, our passionate team of ~16,000 colleagues turn scientific challenges into breakthroughs that improve lives worldwide. 

Diversity and inclusion are fundamental to our core values at Waters Corporation. It benefits our employees, our products, our customers and our community. Waters complies with all applicable federal, state, and local laws. Qualified applicants are considered without regard to sex, race, color, ancestry, national origin, citizenship status, religion, age, marital status (including civil unions), military service, veteran status, pregnancy (including childbirth and related medical conditions), genetic information, sexual orientation, gender identity, legally recognized disability, domestic violence victim status, or any other characteristic protected by law. Waters is proud to be an equal opportunity workplace and is an affirmative action employer. All hiring decisions are based solely on qualifications, merit, and business needs at the time.


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