Science & Technology
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Contaminant Candidate List 3 - CCL 3
Learn about EPA's third Contaminant Candidate List (CCL 3)
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Sources of Lead in Drinking Water (Text Only)
Text Only version of the infographic titled: Sources of Lead in Drinking Water.
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Drinking Water Storage Tank Assessment Study Protocol
Optional activity designed to help drinking water systems assess the impact of tank operations on water quality, as well as estimate average tank turnover time and mixing performance within drinking water storage tanks in a distribution system.
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Free Chlorine Distribution System Influent Hold Study Protocol
Disinfection by-product optimization process and priority setting tool for drinking water systems.
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Small Drinking Water System Variances
Small system variances allow a small system to install and maintain technology that can remove a contaminant to the maximum extent that is affordable and protective of public health in lieu of technology that can achieve compliance with the regulation.
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Cost Model Documentation
WBS model documentation files.
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About Region 8’s Laboratory Services and Applied Sciences Division
The Region 8 Laboratory Services and Applied Sciences Division plays a critical role in protecting people's health and the environment through the analysis of air, water, soil, and biota samples (plant, fish, and occasionally, mammalian tissue).
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Lowest Concentration Minimum Reporting Level (LCMRL) Calculator
The Lowest Concentration Minimum Reporting Level (LCMRL) calculator constructs conditional (on spiking concentration) mean and variance models for analytical measurements.
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Analytical Methods Developed by EPA for Analysis of Unregulated Contaminants
Links to methods for the analysis of unregulated contaminants in support of the Unregulated Contaminant Monitoring Rule (UCMR).
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TENORM: Hard Rock Metal Mining
This page has information about TENORM in the hard rock mine industry, including gold, silver, zircon and titanium.
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TENORM: Fertilizer and Fertilizer Production Wastes
Phosphate rock is used in the production of phosphate fertilizers. Due to its chemical properties, phosphate rock may contain significant quantities of naturally occurring radioactive materials (NORM).
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Technologically Enhanced Naturally Occurring Radioactive Materials (TENORM)
This page provides an overview of TENORM and provides links to additional information about industries and sources and publications and documents related to TENORM.
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Steps to Safe Renovation and Repair Activities
Highlights precautionary measures and best work practices to follow when conducting a repair or renovation in older buildings where PCB-containing building material could be encountered.
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BMDS Online Release History
History and details of BMDS 3.x releases
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Benchmark Dose Software User Guide (November 2024)
Download page for BMDS User Guide
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BMDS Online, BMDS Desktop, and pybmds
Basic information on BMDS Online/Desktop/pybmds applications
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About Benchmark Dose Software (BMDS)
Description of BMDS application purpose and history, with dates of previous software releases and links to peer review documents.
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Benchmark Dose Tools
Home page for EPA's Benchmark Dose Software (BMDS), used by EPA risk assessors primarily for chemical risk assessment
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Risk Analysis Checklist for Biogas Projects
Risk Analysis and Technical Review Checklist for Preparing Biogas Project Plans