This report presents twenty six indicators to help readers better understand observed trends related to the causes and effects of climate change. This document updates a report published by the EPA in 2010.

This report contains key indicators related to the causes and effects of climate change. The data has been contributed by over 40 partnering government agencies, academic institutions, and others. Key indicators include greenhouse gases, weather and climate, oceans, snow and ice, health and society, and ecosystems.

This report discusses progress made by the Environmental Protection Agencies' Regional Laboratory System in the United States.

A document that discusses lake and reservoir conditions in the United States. It discusses the types of pollutants and algal inside of bodies of water.

A document detailing ways to better manage water consumption and retrieve scientific information about water. It aims to inform readers about water supply and aquatic ecosystems.

A paper which promotes water-efficient techniques that can be applied across a wide range of facilities with varying water needs.

This tool provides a one-page technical report that assesses the comparability of a PM₂₅ continuous monitor when collocated with an FRM Sampler.

EPA response to Office of the Inspector General (OIG) final report "Procedural Review of Greenhouse Gases Endangerment Finding Data Quality Processes" (Project No. OPE-FY10-0017), dated September 26, 2011.

This publication offers information on the waste heat to power (WHP). The WHP is the process of capturing heat discarded by an existing industrial process by using heat to generate energy.

Report describing four pathways for incorporating energy efficiency (EE) and renewable energy (RE) policies in State and Tribal Implementation Plans (SIPs/TIPs). The purpose of the report is to reduce the barriers for state, tribal, and local agencies to incorporate EE/RE policies in SIPs/TIPs by clarifying existing EPA guidance.

Appendix to accompany a report about incorporating energy policies and programs into implementation plans, including a glossary.

Appendix to accompany a report about incorporating energy policies and programs into implementation plans, describing an overview of the United States electric system, how the system is likely to respond to the introduction of clean energy resources, and the location of emission reductions relative to the siting of clean energy resources.

Appendix to accompany a report about incorporating energy policies and programs into implementation plans, describing information on existing U.S. Environmental Protection Agency guidance that relates to energy efficiency/renewable energy and state implementation plans.

Appendix to accompany a report about incorporating energy policies and programs into implementation plans, describing state energy efficiency and renewable energy policies and programs.

Appendix to accompany a report about incorporating energy policies and programs into implementation plans, describing the baseline emissions projection pathway.

Appendix to accompany a report about incorporating energy policies and programs into implementation plans, describing the tradeoffs, level of effort, methods, and other key criteria involved in incorporating energy efficiency and renewable energy (EE/RE) polices and programs in a SIP/TIP as a control strategy.

Appendix to accompany a report about incorporating energy policies and programs into implementation plans, describing the emerging and voluntary measures pathway.

Appendix to accompany a report about incorporating energy policies and programs into implementation plans, describing the weight of evidence pathway.

Appendix to accompany a report about incorporating energy policies and programs into implementation plans, describing the best emissions quantification approach when accounting for energy efficiency/renewable energy (EE/RE) policies and programs in state implementation plans/tribal implementation plans (SIPs/TIPs).

Appendix to accompany a report about incorporating energy policies and programs into implementation plans, describing the draft methodology for EPA's Analysis of Existing State Energy Efficiency/Renewable energy Policies.

Appendix to accompany a report about incorporating energy policies and programs into implementation plans, describing states and tribal governments that have implemented EE/RE policies and programs in their SIPs as well as opportunities opportunities to reduce electricity consumption and nitrogen oxides emissions through renewable energy certificates credits and storm water mitigation requirements.

This report assesses the condition of the nation's estuaries and costal embayments, including the coastal waters of the conterminous United States, Southeastern Alaska, Hawaii, American Samoa, Guam, Puerto Rico, and the U.S. Virgin Islands.

This document by the EPA's Office of Water presents data on the concentrations of drinking water contaminants.

OIG analysis of EPA response to OIG Report No. 11-P-0702, "Procedural Review of Greenhouse Gases Endangerment Finding Data Quality Processes", September 26, 2011.