United States
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Meteorological Data - Weather Stations
Interactive US map providing links to data files of 1961-1990 daily and hourly meteorological data available for meteorological data collection stations across US States & Territories
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Proposal to Reduce Ethylene Oxide Emissions from Commercial Sterilization Facilities
On April 11, 2023, the U.S. Environmental Protection Agency (EPA) announced a proposal to significantly reduce emissions ethylene oxide (EtO) from commercial sterilization facilities
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EPA's Response to Eastman Chemical Company's Request that EPA Reconsider Prior Source Determinations
This document is part of the NSR Policy and Guidance Database and the Ttile V Policy and Guidance Database.
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2019 Order Denying a Petition for Objection to Title V Operating Permit for Cargill
This document is part of the title V petition database.
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2019 Order Denying in a Petition for Object to Title V Operating Permit for PNG Wadesboro
This document is part of the title V petition database.
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2020 Order Denying a Petition to Object to the Title V Operating Permit for Hazlehurst
This document is part of the Title V Petition Database.
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Chronic Toxicity - Freshwater WET Methods
Whole effluent toxicity (WET) methods for testing chronic toxicity in freshwater organisms after exposure to wastewater.
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Procedures for Detection and Quantitation - Documents
Documents pertaining to method detection limit (MDL) and quantitation procedures for CWA Analytical Methods
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Procedures for Detection and Quantitation
Documents produced by a Federal Advistory Committee on detection and quantitation procedures, that operated during 2005 to 2007.
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Alternate Test Procedures: Questions and Answers
Frequent questions about alternate test procedures for Clean Water Act analytical methods and the approval process
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Approved CWA Test Methods for Pesticide Active Ingredients
Chemical test methods for pesticide pollutants in water. Approved for use with effluent guidelines regulations for the Pesticide Chemicals category (40 CFR Part 455).
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Methods Update Rule - 2017
Description and documents for the 2017 Methods Update Rule, published 8/28/2017. Amends 40 CFR Part 136.
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Support Documents for the Phase III Cooling Water Intake Rule (2006)
Documents supporting the final Phase III rule for cooling water intakes (2006).
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Support Documents for the Phase II Cooling Water Intake Rule (2004; withdrawn)
Documents supporting the Phase II cooling water intake rule (subsequently withdrawn)
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POTW Nutrient Survey
National Study of Nutrient Removal & Secondary Technologies - online survey questionnaire for POTWs
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Industrial Laundries Wastewater Discharges
Federal Register notices and support document related to wastewater discharges from industrial laundries
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Alternate Test Procedures
Explanation of Alternate Test Procedure program and method flexibility procedures for Clean Water Act analytical methods (40 CFR Part 136).
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2020 Petition Requesting the Administrator Object to Title V Permit for Northampton
This document is part of the title V petition database.
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Water Reuse Case Study: Richmond Hill, Georgia
This case study highlights how a A Water Reclamation Facility Treats Muncipal Wastewater and Reclaims it for Landscape Irrigation and Wetland Preservation in Georgia
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Water Reuse Case Study: Collier County, Florida
This water reuse case study highlights how a facility treated wastewater onsite and recycled it for toilet flushing.