Chemical Research & Standards

For complying with regulatory requirements, such as managing industrial emissions, cleaning up contaminated properties or providing clean drinking water.
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Ambient Air Quality Standards

Air Quality Regulations & Standards
Ambient Air Toxics Guidelines (PDF 292.45 KB)
Allowable Threshold Concentrations (ATCs) - 1995

Chemicals in Massachusetts Drinking Water: Standards & Guidelines

2017 Standards and Guidelines for Contaminants in Massachusetts Drinking Waters
2017 Standards & Guidelines for Contaminants in Massachusetts Drinking Water
DWP's Use of MCLs, Office of Research and Standards Drinking Water Guidelines for Drinking Water (ORSGs) and US EPA Health Advisory (HA) Levels
Immediate Action Levels for Water Treatment Plant Chemicals
Testing Requirements for Public Water Systems - Summary
Uranium Activity to Mass Conversion Factor Guideline for Use in Drinking Water Compliance Monitoring and Risk Assessment

Cyanide

Background Documentation: Development of an "Available Cyanide" Benchmark Concentration

1,4-Dioxane

1,4-Dioxane

Dioxins & Furans

http://www.mass.gov/eea/agencies/massdep/toxics/reports/assessment-and-control-of-dioxin-in-massachusetts.html
Re-evaluation of the Toxicity Equivalency Factors for Dioxins and Dibenzofurans
Chlorinated Dioxins & Furans

Emerging Contaminants

Emerging Contaminants

Lead

Ecological Risks of Lead Shot
Is There Lead In My Tap Water and What Can I Do About It?

Methyl t-Butyl Ether (MTBE)

Justification for Decreasing the ORS Guideline for MTBE in Drinking Water from 0.7 mg/l to 0.07 mg/l
Current Regulatory Limit: MTBE

Naphthalene

Current Regulatory Limit: Naphthalene

Percholorate

Drinking Water Standard for Perchlorate
Perchlorate Sampling Requirements for Public Water Systems
Final MCP Numerical Standards for Perchlorate
Response to Comments on the Public Hearing Draft of Perchlorate Regulations
ORS US Senate Testimony on Perchlorate
US Senate Followup Questions on Perchlorate
MassDEP Response to EPA's Preliminary Regulatory Determination on Perchlorate
ORS Comments on Inspector General's Perchlorate Analysis
Environmental Health Perspectives: Basis of the Massachusetts Reference Dose and Drinking Water Standard for Perchlorate
Federal Register Summary of Perchlorate Effects
MassDEP Comments to EPA on Perchlorate
Addressing Perchlorate and Other Emerging Contaminants in Massachusetts
Fireworks Best Environmental Management Practices
Letter to Certified Labs Regarding Perchlorate Testing
Perchlorate Toxicological Profile & Health Assessment - June 2006
Addendum to the Perchlorate Toxicological Profile & Health Assessment - June 2006
Letter to Public Water Suppliers Concerning New Perchlorate Regulations
Perchlorate Fact Sheet for Public Water Suppliers
Evaluation of Perchlorate Contamination at a Fireworks Display: Dartmouth, Massachusetts
The Occurrence and Sources of Perchlorate in Massachusetts
Perchlorate Monitoring Results - Confirmed Above 1.0 ppb
Approved Perchlorate Laboratories and Related Information
Perchlorate Report
Potential Environmental Contamination from the Use of Perchlorate-Containing Explosive Products (PDF 284.38 KB)

Petroleum Hydrocarbons

Petroleum Hydrocarbons

Polycylic Aromatic Hydrocarbons (PAHs)

Polycylic Aromatic Hydrocarbons (PAHs)

Tetrachloroethylene

Tetrachloroethylene (Perchloroethylene) Inhalation Unit Risk Value - June 2014
Tetrachloroethylene (Perchloroethylene) Inhalation Unit Risk Value Appendices - June 2014
Summary of the Basis of Cancer Risk Values for Tetrachloroethylene - January 2014
Revised MassDEP Cancer Unit Risk for Tetrachloroehtylene - September 2008
Appendices to Revised MassDEP Cancer Unit Risk for Tetrachloroehtylene - September 2008

Trichloroethylene

TCE Toxicity Information: Implications for Chronic and Shorter-Term Exposure - Fact Sheet
EPA Trichloroethylene Toxicity Values and ORS Recommendations Regarding Remediation Targets & Timeframes to Address Potential Developmental Risks pdf format of TCE Developmental Risk Targets & Timeframes doc format of TCE Dev
Important Information about Trichloroethylene (TCE) in Residential Indoor Air
Important Information about Trichloroethylene (TCE) in Workplace Indoor Air
Assessing the Congenital Cardiac Toxicity of Trichloroethylene: Key Scientific Issues
Addendum to the TCE Document Entitled “Assessing the Congenital Cardiac Toxicity of Trichloroethylene: Key Scientific Issues”
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