Stormwater & Runoff Testing Services

Stormwater and surface runoff are dynamic, often unpredictable water sources influenced by weather events, seasonal changes, and a variety of human activities. Unlike process-controlled wastewater streams, stormwater flows across diverse landscapes—urban streets, agricultural fields, industrial lots—collecting contaminants as it travels.

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Why Test Stormwater and Runoff?

Stormwater and runoff represent a critical environmental nexus: they link terrestrial activities with aquatic ecosystems, transferring pollutants from land to local waterways. Unchecked, these contaminants—ranging from sediment and nutrients to heavy metals and hydrocarbons—can degrade water quality, harm aquatic habitats, and pose health risks. By regularly testing stormwater and runoff, you can:

Strengthen Permit Compliance

Municipal Separate Storm Sewer System (MS4) permits, construction stormwater permits, and industrial stormwater permits often require systematic monitoring. Reliable test data helps ensure that your operations align with regulatory benchmarks. 

Reduce Environmental Impact

Targeted analysis supports the development of effective stormwater management plans. This includes optimizing Best Management Practices (BMPs) to mitigate pollutant loading, prevent eutrophication, and limit sedimentation. 

Support Sustainable Development

Informed decision-making guides the design of green infrastructure—such as bioswales, rain gardens, and permeable pavements—that enhances infiltration, reduces runoff, and protects downstream ecosystems. 

Anticipate Climate-Related Pressures

As climate change intensifies rainfall patterns and extreme weather events, stormwater systems face new challenges. Strategic testing provides a baseline for adapting infrastructure and policies to shifting hydrological regimes.

Advanced Analytical Approach

Integrated Pollutant Profiling

We assess a spectrum of parameters—turbidity, total suspended solids (TSS), nutrients..

(nitrogen, phosphorus), metals (zinc, copper, lead), petroleum hydrocarbons, and pathogens—to provide a comprehensive pollutant profile of your runoff.

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High-Frequency Sampling & Automated Collection

Rainfall is episodic and pollutant loads can spike during storm events. We help implement..

automatic samplers and flow-paced collection strategies, ensuring that you capture data at critical times rather than relying solely on static sampling.

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Source Tracking & Forensics

Using advanced chemical markers, isotope analysis, and microbial source tracking, we can..

differentiate pollutants originating from agricultural applications, industrial spills, or municipal infrastructure. This forensic-level detail helps pinpoint the root cause of contamination.

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Quality Assurance & Expert Interpretation

Our lab adheres to stringent quality control protocols and uses state-of-the-art instrumentation. Beyond..

the data, our environmental scientists offer interpretive insights—connecting test results to potential land use practices, infrastructure vulnerabilities, and remediation opportunities.

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Supporting a Range of Stakeholders

Municipalities & Stormwater Utilities

Meet NPDES (National Pollutant Discharge Elimination System) requirements, inform stormwater master plans

and enhance the resilience of local stormwater infrastructure.

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Construction & Development Firms

Validate that sediment and erosion control measures are working as intended, protect local waterways from sediment

overload, and ensure compliance with construction stormwater permits.

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Industrial & Commercial Facilities

Identify pollutant hotspots on your property, reduce runoff contamination through targeted BMPs, and

maintain strong environmental performance records.

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Agricultural Land Managers:

Optimize nutrient management strategies, safeguard drinking water supplies, and protect downstream fisheries and

wetlands by monitoring and minimizing nutrient runoff.

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Environmental Consultants & Non-Profits:

Generate robust datasets that inform environmental impact assessments, restoration

projects, and policy recommendations aimed at preserving water quality and biodiversity.

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Proactive Solutions for Changing Conditions

Adaptive Management

By continuously monitoring runoff quality, you can evaluate the effectiveness of implemented BMPs, refine stormwater infrastructure..

designs, and respond swiftly to new challenges, whether that’s a sudden contaminant spike or a change in land use.

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GIS Integration & Spatial Analysis

Combining lab results with geospatial data provides a clearer picture of watershed-level dynamics. This holistic view helps prioritize catchments..

needing the most attention and guides placement of green infrastructure.

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Climate Readiness

With long-term datasets, you gain the ability to detect trends, forecast flood risks, and strategize for future conditions. Testing results feed into.. 

models that predict runoff volume, pollutant loads, and storm surge impacts.

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Partner With PITS Environmental

Choosing PITS Environmental for your stormwater and runoff testing means collaborating with a team that understands the unique complexity of these water sources. We provide actionable data, interpretive expertise, and forward-looking recommendations that not only help you meet today’s standards but also anticipate tomorrow’s challenges. Whether you’re managing a large urban watershed or a small construction site, our approach is rooted in scientific rigor, environmental stewardship, and responsive client support.

Frequently Asked Questions

How often should stormwater or runoff be tested?

Testing frequency depends on regulatory permit conditions, the sensitivity of the receiving environment, and seasonal precipitation patterns. Often, sampling is required during specific storm events and seasons to capture representative water quality data under varying conditions.

Yes. Through techniques like microbial source tracking and detailed chemical fingerprinting, we can help distinguish between pollution arising from industrial activity, vehicle emissions, landscape fertilizers, septic systems, and other sources.

Our team offers more than test results. We’ll help you interpret the data, recommend targeted BMPs or infrastructure improvements, and consult on strategies that can bring your runoff quality into compliance.

Emerging contaminants such as microplastics, PFAS compounds, and tire-derived chemicals are increasingly being monitored in stormwater. We stay updated on cutting-edge methods to detect these pollutants and help you prepare for future regulatory thresholds.

By comparing water quality data before and after implementing green infrastructure—like rain gardens or vegetated swales—you can gauge their effectiveness. This data-driven feedback loop allows for iterative improvements, ensuring that your investments yield measurable environmental benefits.

Contact Us

Your Environment, Our Priority

Have questions about environmental testing? Whether it’s water, air, or more, we’re here to help you ensure safety and compliance. Contact us today to schedule your test or learn more about our services!

Call us

Available Mon-Fri from 9:00 AM to 6:00 PM
(877) 427-6737

Email Us

Your queries matter to us.
info@pitsenvironmental.com