Wastewater Testing Services
Accredited NPDES compliance testing, industrial pretreatment analysis, biosolids characterization, and process control support for municipal treatment plants and industrial facilities that need accurate data delivered on time, every time.
SPL provides comprehensive wastewater testing and analysis services for municipal wastewater treatment plants, industrial permittees, pretreatment programs, and environmental consultants across the United States. Our NELAP/TNI-accredited laboratories deliver accurate, defensible data for National Pollutant Discharge Elimination System (NPDES) permit compliance, Discharge Monitoring Report (DMR) preparation, EPA Industrial Pretreatment Program testing, biosolids characterization, sludge analysis, process control monitoring, and site remediation support. With more than 2,000 municipal and industrial clients served monthly and a nationwide network of accredited laboratories and field collection teams, SPL is built to handle the full scope of your wastewater compliance program — from sample collection through regulatory reporting.
Built for the Operators Running the Plant and the Consultants Supporting Them
Municipal Wastewater Treatment Plants
Industrial Permittees & EPA Pretreatment Programs
Environmental Consultants & Engineers
NPDES permit compliance testing, TMDL monitoring, effluent characterization, permit renewals, and DMR testing for publicly owned treatment works (POTWs). SPL understands the regulatory pressure on plant operators, tight permit limits, state agency deadlines, and the public health consequences of a compliance failure. We make sure your data is right and your reports are on time.
Industrial wastewater discharge compliance under NPDES and USEPA Industrial Pretreatment Program (IPP) requirements. SPL supports both the industrial permittee managing its own discharge and the POTW administering a local pretreatment program — with the analytical scope to cover metals, organics, conventional parameters, and emerging contaminants across all regulated matrices.
Fast turnaround, defensible data, and project management support for consultants managing client compliance programs, permit applications, facility assessments, and remediation projects. SPL functions as a seamless extension of your team, handling the analytical work so you can focus on the technical and regulatory advisory services your clients depend on.
Comprehensive Wastewater Analysis, from Permit Limits to Process Control
NPDES Compliance Testing
Process Control Monitoring
SPL provides the full analytical scope required for NPDES permit compliance – microbiology, conventional parameters, nutrients, metals, organics, and permit-specific parameters. Our NELAP-accredited results meet the data quality standards required for regulatory submission and agency review, and our project managers understand the deadlines that drive your compliance calendar.
Effective treatment plant operation depends on real-time process data. SPL provides process control testing such as BOD, TSS, nutrient levels, pH, alkalinity, dissolved oxygen, and other operational parameters, with fast turnaround, that keeps your operators informed and your process optimized. When your plant is running well, your permit compliance takes care of itself.
Discharge Monitoring Report (DMR) Support
Biosolids and Sludge Analysis
Accurate DMR preparation starts with accurate data. SPL’s results are delivered in formats that directly support your DMR workflow, and our project managers can configure automatic reporting and exceedance alerts so you always know where you stand before your reporting deadline arrives.
Comprehensive biosolids characterization for land application, landfill disposal, and regulatory reporting, including microbiology, metals, nutrients, and more. SPL also provides sludge and grit analysis, dewatered cake characterization, and digester performance monitoring to support your solids handling and disposal program.
Industrial Pretreatment Program Testing
OIl and Gas Production Water
Whether you’re a POTW administering a local pretreatment program or an industrial user subject to categorical or local limits, SPL provides the analytical testing your program requires. We cover metals, conventional pollutants, oil and grease, organics, and priority pollutants across the full range of EPA categorical pretreatment standards.
Environmental support for oil and gas production activities includes produced water characterization, frac flowback analysis, and produced water disposal compliance testing. SPL’s combined energy and environmental expertise makes us uniquely positioned to support the water quality obligations that come with energy production operations.
Missing a DMR Deadline Isn't an Option. Neither Is Inaccurate Data.
Wastewater compliance isn’t a quarterly project — it’s an ongoing operational responsibility. Permit limits don’t negotiate. State agencies don’t grant extensions for lab delays. And when your effluent data is wrong, the consequences don’t stay in a spreadsheet — they show up in violation notices, consent orders, and public records. SPL’s wastewater program is built around that reality. Fast turnaround, multi-level data review, direct regulatory reporting integration, and a dedicated project manager who tracks your compliance calendar so nothing slips through.
Analytical Scope That Covers Your Entire Permit
Conventional & Nutrient Parameters
Organics & Priority Pollutants
- Fecal Coliform and E. coli
- Biochemical Oxygen Demand (BOD & CBOD)
- Chemical Oxygen Demand (COD)
- Total Suspended Solids (TSS)
- Total Dissolved Solids (TDS)
- Ammonia, Nitrate, Nitrite, Total Kjeldahl Nitrogen (TKN)
- Total Phosphorus
- pH, Alkalinity, Hardness
- Dissolved Oxygen
- Oil and Grease
- Volatile Organic Compounds (VOCs)
- Semi-Volatile Organic Compounds (SVOCs)
- Pesticides and PCBs
- Polynuclear Aromatic Hydrocarbons (PAHs)
- Phthalates
- EPA Priority Pollutant List parameters
Metals
Emerging & Specialty Contaminants
- Lead, Copper, Zinc, Chromium, Nickel, Cadmium
- Mercury, Arsenic, Selenium
- Full EPA 200-series metals suite
- Total and dissolved fractions
- PFAS (EPA Methods 533, 537.1, 1633)
- Quaternary Ammonium Compounds (QACs)
- Dioxin (2,3,7,8-TCDD)
- Illicit drug screening
- Pharmaceutical and personal care products
PFAS in Wastewater: The Compliance Challenge Isn't Going Away
Municipal wastewater treatment plants and industrial dischargers face increasing regulatory scrutiny around PFAS in effluent, biosolids, and receiving waters. SPL provides PFAS wastewater analysis using EPA Methods 533, 537.1, and 1633 — covering non-potable water, soil, and solid waste matrices including biosolids. As EPA’s PFAS regulatory framework continues to develop, SPL’s laboratories stay current with updated method requirements and detection standards so your compliance program doesn’t fall behind the science.
Does SPL test for PFAS in wastewater and biosolids?
Yes. SPL provides PFAS analysis in non-potable water, wastewater, and biosolids using EPA Methods 533, 537.1, and 1633. As regulatory requirements for PFAS in wastewater and biosolids continue to evolve, our laboratories maintain current method accreditation and stay ahead of emerging detection requirements.
Can SPL collect my wastewater samples in the field?
In many service regions, yes. SPL’s field technicians collect composite and grab samples from effluent, influent, and in-process locations, with proper container preparation, preservation, chain-of-custody documentation, and coordinated transport to our laboratories. Contact us to confirm field collection availability in your area.
How quickly does SPL turn around wastewater results?
Standard and rush turnaround options are available depending on your permit requirements and project needs. Contact your dedicated SPL project manager or reach us at info@spllabs.com to discuss turnaround options for your specific analytical parameters.
Can SPL support my Permit Renewal testing requirements??
Yes. We can support all of the pollutant group testing requirements needed for your permit renewal. This includes Conventional Pollutants, Metals, Nutrients, Organic and Inorganic parameters, and more.
Does SPL provide biosolids testing for land application compliance?
Yes. SPL provides comprehensive biosolids characterization for land application and disposal compliance — including microbiology, metals, nutrients, and regulatory reporting support under EPA 503 biosolids regulations.
Does SPL provide biosolids analysis for landfill disposal of sludge?
Yes, we can perform biosolids analysis of Hazardous Waste Characterizations, and other local and regional Form requirements by regulators.
Your Wastewater Compliance Program Deserves a Partner Who Keeps Up
Whether you need routine NPDES compliance testing, DMR support, industrial pretreatment analysis, or a fully managed wastewater monitoring program — SPL has the accredited capabilities, the field reach, and the project management infrastructure to deliver.