| #D001 | | SDWIS | Safe Drinking Water Information System | high |
| #D002 | | SDWIS | the EPA’s system of record for Safe Drinking Water Act data; it includes data on public water system characteristics and compliance with SDWA regulations. | medium |
| #D003 | | RRA | Risk and Resilience Assessment | high |
| #D004 | | ERP | Emergency Response Plan | high |
| #D005 | | SDWA | Safe Drinking Water Act | high |
| #D006 | | AWIA | America's Water Infrastructure Act | high |
| #D007 | | UST | underground storage tank | high |
| #D008 | | Water ICAT | an interactive map that helps users identify drinking water and wastewater utilities that may benefit from water infrastructure technical or capacity development assistance. | medium |
| #D009 | | SRF | State Revolving Fund | high |
| #D010 | | UCMR | Unregulated Contaminant Monitoring Rule | high |
| #D011 | | DWMAPS | Drinking Water Mapping Application to Protect Source Waters | high |
| #D012 | | ECHO | Enforcement and Compliance History Online | high |
| #D013 | | ADWR | Aircraft Drinking Water Rule | high |
| #D014 | | DWINSA | Drinking Water Infrastructure Needs Survey and Assessment | high |
| #D015 | | CCR | Consumer Confidence Report | high |
| #D016 | | GPRA | Government Performance and Results Act | high |
| #D017 | | NCOD | National Contaminant Occurrence Database | high |
| #D018 | | ROE | Report on the Environment | high |
| #D019 | | UIC | Underground Injection Control | high |
| #D020 | | WIFIA | Water Infrastructure Finance and Innovation Act | high |
| #D021 | | SFRS | Safe Drinking Water Information System (SDWIS) Federal Reporting Services | high |
| #D022 | | PFAS | Perfluoroalkyl and Polyfluoroalkyl Substances | high |
| #D023 | | ROTG | Response On-The-Go | high |
| #D024 | | Water ICAT | Water Infrastructure and Capacity Assessment Tool | high |
| #D025 | | .gov | official government organization in the United States | high |
| #D026 | | direct | A point source that discharges pollutants to waters of the United States, such as streams, lakes, or oceans. | high |
| #D027 | | indirect | A facility that discharges pollutants to a publicly owned treatment works (municipal sewage treatment plant). | high |
| #D028 | | copper alloys | any alloy in which copper is the major constituent. | high |
| #D029 | | Plate | a wide rigid piece of metal usually greater than ¼ inch thick. | high |
| #D030 | | Sheet | a wide piece of metal having little rigidity and usually less than ¼ inch thick. | high |
| #D031 | | strip | the length is many times the width and the product is commonly handled as coils of metal called coiled strip. | high |
| #D032 | | Wire | usually circular in cross section and is flexible. | high |
| #D033 | | cable | Wire that is twisted or woven into strands, used for lifting or in structural supports | high |
| #D034 | | Rod | similar to wire in that it has a circular cross section but is more rigid. | high |
| #D035 | | Tubing | material in the form of long hollow cylinders. | high |
| #D036 | | Forgings | formed from copper, usually hot, by individual and intermittent applications of pressure. | high |
| #D037 | | beryllium copper alloys | any copper alloy that is alloyed to contain 0.10 percent or greater beryllium | high |
| #D038 | | precious metals | any alloy containing 30 or greater percent by weight of precious metals | high |
| #D039 | | NAICS | North American Industrial Classification System | high |
| #D040 | | TTO | Total Toxic Organics | high |
| #D041 | | POTWs | publicly owned treatment works | high |
| #D042 | | Development Document | Industry description, wastewater characterization, treatment technologies, regulatory compliance cost estimates and pollutant loadings for the final rule | high |
| #D043 | | publicly owned treatment works (POTWs) | A treatment works, as defined by Section 212 of the CWA, that is owned by the state or municipality. This definition includes any devices and systems used in the storage, treatment, recycling, and reclamation of municipal sewage or industrial wastes of a liquid nature. It also includes sewers, pipes, and other conveyances only if they convey wastewater to a POTW treatment plant [40 CFR 403.3]. | high |
| #D044 | | ICIS | Integrated Compliance Information System | high |
| #D045 | | PCS | Permit Compliance System | high |
| #D046 | | DMR | Discharge Monitoring Report | high |
| #D047 | | NPDES | National Pollutant Discharge Elimination System | high |