| #Q001 | treatment | treatment | mandatory | Source Water Treatment | other | Source water must be treated prior to use in the refinery. | Prior to use in the refinery | high |
| #Q002 | corrective_action | health | mandatory | Lead Pipe Identification and Replacement | drinking water | requiring drinking water systems across the country to identify and replace lead pipes within 10 years. | Drinking water systems across the country | high |
| #Q003 | monitoring | health | mandatory | Rigorous Drinking Water Testing | drinking water | The Lead and Copper Rule Improvements (LCRI) also require more rigorous testing of drinking water | | high |
| #Q004 | corrective_action | health | mandatory | Lead Exposure Action Threshold | drinking water | a lower threshold requiring communities to take action to protect people from lead exposure in water. | When lead exposure threshold is met | high |
| #Q005 | reporting | reporting | mandatory | Community Communication and Information | drinking water | the final rule improves communication within communities so that families are better informed about the risk of lead in drinking water, the location of lead pipes, and plans for replacing them. | | high |
| #Q006 | administrative | operational | mandatory | Facility Permit Reapplication | wastewater | The authority issues the permit to the facility for a specific time period (not to exceed five years) with a requirement that the facility reapply prior to the expiration date. | prior to the expiration date | high |
| #Q007 | monitoring | operational | mandatory | Clean Water Act Analytical Methods | wastewater | laboratory analytical methods and test procedures that are used to analyze the chemical, physical, and biological components of wastewater and other environmental samples that are required by the Clean Water Act (CWA). | when analyzing wastewater and environmental samples required by CWA | high |
| #Q008 | administrative | operational | mandatory | EPA Program Oversight | wastewater | In states authorized to implement CWA programs, EPA retains oversight responsibilities. | In states authorized to implement CWA programs | high |
| #Q009 | administrative | operational | mandatory | Individual Permit Duration Limit | wastewater | The authority issues the permit to the facility for a specific time period (not to exceed five years) | Individual permits | high |
| #Q010 | administrative | operational | mandatory | Individual Permit Development Basis | wastewater | the permitting authority develops a permit for that particular facility based on the information contained in the permit application (e.g., type of activity, nature of discharge, receiving water quality). | Following submission of appropriate applications for an individual permit | high |
| #Q011 | administrative | operational | mandatory | Direct Discharger NPDES Incorporation | wastewater | The CHWC Effluent Guidelines are incorporated into NPDES permits for direct dischargers. | For direct dischargers as defined by point source discharges to waters of the US | high |
| #Q012 | administrative | operational | mandatory | Indirect Discharger Control Incorporation | wastewater | The CHWC Effluent Guidelines are incorporated into permits or other control mechanisms for indirect dischargers. | For facilities discharging to a publicly owned treatment works (POTW) | high |
| #Q013 | administrative | operational | mandatory | Commercial Facility Regulatory Applicability | wastewater | The CHWC regulation applies solely to commercial facilities (i.e., facilities that accept wastes from off-site for fee or remuneration). | | high |
| #Q014 | administrative | operational | mandatory | Wastestream Coverage Limitation | wastewater | Sources of CHWC wastewater covered by the regulation include only water used in air pollution control systems, and water used to quench flue gas or slag generated as a result of thermal operations. | | high |
| #Q015 | prohibition | operational | mandatory | Cement Kiln Exclusion | wastewater | The regulation (40 CFR Part 444) covers wastewater discharges from hazardous waste combustor facilities, except cement kilns, regulated as "incinerators" or "boilers and industrial furnaces" under the Resource Conservation and Recovery Act (RCRA). | Hazardous waste combustor facilities regulated as incinerators or boilers/industrial furnaces under RCRA | high |
| #Q016 | prohibition | operational | mandatory | Public Service and Product Stewardship Exclusion | wastewater | The regulation does not apply to a hazardous waste combustor facility that accepts wastes from off-site without a fee or other remuneration. For example, it does not apply to a hazardous waste combustor facility that accepts off-site wastes only as a public service or pursuant to product stewardship agreements, as long as that facility accepts no fee or other remuneration for accepting those wastes. | Accepting wastes from off-site without a fee or remuneration | high |
| #Q017 | prohibition | operational | mandatory | Internal Corporate Waste Exclusion | wastewater | The regulation is not applicable to hazardous waste combustors that only burn waste generated on site or off-site from facilities under their same corporate structure. | Waste generated on site or from facilities under the same corporate structure | high |
| #Q018 | prohibition | operational | mandatory | Similar Nature Waste Exclusion | wastewater | It does not apply to commercial facilities that only accept off-site wastes that are of a similar nature to the wastes being generated and burned on site. An example of similar wastes are wastes that are generated in operations that are subject to the same Effluent Guidelines in 40 CFR Subchapter N. | Off-site wastes are of a similar nature to wastes generated on site | high |
| #Q019 | administrative | reporting | mandatory | Drinking Water Contamination Tracking | drinking water | SDWIS tracks information on drinking water contamination levels as required by the 1974 Safe Drinking Water Act and its 1986 and 1996 amendments. | As required by the 1974 Safe Drinking Water Act and its 1986 and 1996 amendments | high |