Water Supply Guidance Subject Index

All files are in an Acrobat PDF format.  Files with an * are listed in more than one section.

TITLE OF GUIDANCE

WSG NUMBER

DATE

ALTERNATIVE TREATMENT TECHNOLOGIES
 

Release of Final State Alternative Technology Approval Protocol	103	07/11/96
Small System Compliance Technology List for the Surface Water Treatment Rule and Total Coliform Rule	09/98
Small System Compliance Technology List for the Non-microbial Contaminants Regulated before 1996	114A	09/98
Variance Technology Findings for Contaminants Regulated before 1996	114B	09/98

ANALYTICAL REQUIREMENTS/LABORATORY CERTIFICATION  

*Procedures for Rounding-Off Analytical Data to Determine Compliance with Maximum Contaminant Levels Present in NIPDWR	21	04/06/81
*Lab Certification for Lead Contamination Control Act (LCCA)	44A	5/18/8 Revised 07/98
Analytical Methods for Compliance and Limited Alternative Test Procedures Approvals	53	12/27/89 Revised 12/98
*Clarification of Turbidity Requirements for Filtered Systems under the Surface Water Treatment Rule (SWTR)	78	02/01/94
Analytical Methods Home Page via the Internet	130	10/01/98
State Programs for Laboratory Certification	H33	12/90
Reporting Confluent Growth on Total Coliform Samples	H37	8/91
*Lab Certification for Water Quality Parameters	H48	7/92

CAPACITY DEVELOPMENT  

Guidance on Implementing the Capacity Development Provisions of the Safe Drinking Water Act Amendments of 1996	122	07/98
Hypothetical State Programs for Ensuring that All New CWSs and NTNCWSs Demonstrate Technical, Managerial and Financial Capacity	123	07/98
Information for the Public on Participating with States in Preparing Capacity Development Strategies	124	07/98
Information for States on Implementing the Capacity Development Provisions of the Safe Drinking Water Act Amendments of 1996	125	07/98

CHEMICALS OTHER THAN LEAD & COPPER  

*Procedures for Rounding-Off Analytical Data to Determine Compliance with Maximum contaminant Levels Present in NIPDWR	21	04/06/81
*Response to Questions Raised by Region IV Concerning Public Notification Requirements for the Unregulated Contaminants	40	04/27/88
*Region V's Approach on Unregulated Contaminant Public Notification Requirements	51	12/01/89
*Unregulated Contaminant Public Notification Requirements	51A	10/04/89
*Clarification of Public Notification Requirements for Unregulated Contaminants	51B	05/07/90
Final Guidance for State Sampling Waiver Programs	71	08/25/92
Guidance and Clarification on the Use of Detection Limits in Compliance Monitoring	77	12/16/93
Clarification on Chlorination BAT for Cyanide	79	03/07/94
*State Reporting Guidance for Unregulated Contaminant Monitoring(this guidance may be updated)	84	08/94
Alternative Monitoring Guidelines	112	08/97
Determination of Vulnerability to VOCs	H9	07/88
*Possible Toxicity of Aluminum	H26	03/90
VOC Monitoring Requirements and the Blending of Separate Water Supply Sources as a Form of Treatment	H32	08/90 Revised 02/99
*Secondary MCL Range for Aluminum(this guidance may be updated)	H38	08/91
Monitoring for Unregulated Contaminants	H49	07/92
*Variances and Exemptions for Fluoride Revised in the Phase II Rule	H52	07/92

DIRECT IMPLEMENTATION  

*Water Supply Guidance Direct Implementation Programs --  4 Programmatic Issues

25

1/25/85

DISINFECTION  

*Problems Associated with Disinfection Changes	22	01/27/83 Revised 12/99
*Use of Water Treatment Chemicals and Operation of Public Water Systems During Emergencies	61	08/06/90 Revised 07/28/97

DRINKING WATER STATE REVOLVING FUND (DWSRF)  

Drinking Water State Revolving Fund Program Guidelines

107

02/97

EMERGENCY ACTION AND PLANNING  

Guidelines for Preparation and Review of State Emergency Plans	4	10/29/76
Emergency Disinfection of Drinking Water - Boiling	11	05/08/78 Revised 04/17/98
*Use of Water Treatment Chemicals and Operation of Public Water Systems During Emergencies	61	08/06/90 Revised 07/28/97
*Final Guidance on Emergency Authority Under Section 1431 of the Safe Drinking Water Act	68	09/27/91
Boiling Water Time for Killing Pathogens	134	Unknown

ENFORCEMENT  

*Approval of State Programs for Primary Enforcement Authority Under Subpart B of the Safe Drinking Water Act	5	11/29/76 Revised 11/98
*Indian Policy Implementation Guidance	23	11/8/84
Policy Against "No Action" Assurances	24	11/16/84
*Direct Implementation - 4 Programmatic Issues	25	01/25/85
Division of Penalties with State and Local Governments	26	10/30/85
Guidance for FY 1987 PWSS Enforcement Agreement	27	08/08/86
Revised Policy Framework for State/EPA Enforcement Agreements	28	08/25/86
Guidance for the FY 1988 State/EPA Enforcement Agreements Process	31	03/31/87
Guidance for FY 1988 PWSS Enforcement Agreements	31A	06/16/87
*Lead Ban -- Effective Date and Enforcement	32	04/23/87
Supplemental Guidance on the Issuance of Administrative Orders in the PWSS and UIC Programs	33	08/10/87
Procedures for Issuing Complaints for Penalties for Violations of PWSS Administrative Orders	35	02/23/88
*Policy on Publicizing Enforcement Activities	37	03/25/88
*Policy on Publicizing Enforcement Activities	37A	11/21/85
*Press Release Policy	37B	01/30/85
Enforcement Actions Against Systems which are "Intermittent" Violators of Administrative Orders	38	04/12/88
Coordination with State Officials on the Issuance of Notices of Violations Under Section 1414 of the SDWA	39	04/21/88
*The SDWA Lead Ban	43	12/07/88 Revised 06/01/98
*Implementation and Enforcement of the Lead Prohibition and Lead Public Notification Requirements of the SDWA in Fiscal Years 1990 and Beyond	47	08/18/89
*Implementation of Enforcement Provisions in the EPA Federal Facilities Compliance Strategy	50	11/15/89
Multi-Media Settlements of Enforcement Claims	54	02/06/90
Change in the PWSS Program's Definition of Timely and Appropriate Action	56	04/20/90
Revised Definition of Significant Noncomplier (SNC) and the Model for Escalating Responses to Violators for the PWSS Program	57	05/22/90
*Delegations of Authority for the Public Water System Supervision Program	60	07/23/90
Tracking Compliance with Administrative Orders in the PWSS and UIC Programs	62	08/23/90
*Final SNC Definition for the TCR and Proposed SNC Definition for the SWTR	63	12/19/90
Interim Policy on the Inclusion of Pollution Prevention and Recycling Provisions in Enforcement Settlements	64	02/25/91
*Final SNC Definition for the SWTR	65	02/28/91
*Final Guidance on Emergency Authority Under Section 1431 of the Safe Drinking Water Act	68	09/27/91
*Guidance on Enforcement of the Requirements of the Surface Water Treatment Rule	70	06/26/92
*Enforceability of Filtration Determinations Under the SWT Regulation	72	11/30/92
Guidance on Section 1 of the Civil Justice Reform Executive Order No. 12778	75	04/08/93
New Public Water System Supervision Program Settlement Penalty Policy	81	05/25/94
Corrected Attachment 1 for PWSS Settlement Penalty Calculation Worksheet	83	06/14/94
Processing Requests for Use of Enforcement Discretion	86	03/03/95
Policy on Flexible State Enforcement Responses to Small Community Violations	91	11/22/95
Federal Register Notice, Part III: Incentives for Self-Policing: Discovery, Disclosure, Correction and Prevention of Violations (a.k.a "The Audit Policy")	93	12/22/95
*Guidance on the Process for Review of Enforcement Actions Against Tribal Facilities	95	02/16/96
Federal Register Notice, Part IV: Policy on Compliance Incentives for Small Businesses	102	06/03/96
*Public Release of EPA Enforcement Information	105	08/15/96
*Delegation of Authorities Under Section 1445 of the 1996 SDWA Amendments Regarding Issuance of Information to Determine Compliance with the Act	110	07/07/97
Requirements for State Administrative Penalty Authority under the SDWA 1996	113	08/97
Issuance of Final Supplemental Environmental Projects Policy	119	04/10/98
Guidance on Federal Facility Penalty Order Authority Under the SDWA, as Amended in 1996	121	05/29/98
*Enforcement and Implementation of Section 1417 of the SDWA	129	09/24/98
*The Data Sharing Committee's Recommendations for Lead and Copper Rule Violation Reporting	133A	12/29/98
*Lead Ban Enforcement	H5	04/88
State Enforcement of the NSDWRs	H6	04/88
*Pipe Fittings Under the Lead Ban	H7	05/88
*Effective Date of the Lead Ban	H11	09/88
*Lead Ban Enforcement	H12	09/88
*Effect of the Lead Ban on Sale of Plumbing Fixtures Containing Lead Solder	H16	04/88 Revised 06/01/98
*Lead Ban	H19	12/88

FEDERAL FACILITIES  

Federal Facilities - Option for State Coverage Under Section 1413 of the Safe Drinking Water Act, As Amended	9	11/09/77
*Implementation of Enforcement Provisions in the EPA Federal Facilities Compliance Strategy	50	11/15/89
Corrosion Control Devices and the PWS Program	H25	03/90
State Primacy over Federal Facilities	H39	08/91

GRANTS  

Guidance on Allowable Costs for State PWSS Program Grants	7	12/13/76
Guidance on Allowable Costs for State PWSS Program Grants	7A	3/11/77
Grant Allocation	13	08/01/78
Use of Grant Funds for Data Management Activities	20	01/24/80
*Policy on Regional Response to a State which Decides to Accept the Five Percent Reduction in its PWSS Program Grant	41	09/16/88
*Delegations of Authority for the Public Water System Supervision Program	60	07/23/90
*Revised Uses, Distribution and Timing of Indian Land PWSS Grant Funds	90	06/26/95

INDIAN LAND ISSUES  

*Indian Reservations--Distinction Between EPA Jurisdiction Over Public Water Systems and State Jurisdiction	1	03/01/76
*Questions and Answers on Non-Indian Water Supply Situations	15	01/08/79
*Indian Policy Implementation Guidance	23	11/8/84
*Final Guidance on Implementing Primacy Rule for the PWSS and UIC Programs	45	04/25/89
*Additional Guidance on Implementing the Indian Primacy Rule for the PWSS and UIC Programs	46	04/25/89
*Delegations of Authority for the Public Water System Supervision Program	60	07/23/90
EPA Indian Policy	80	03/14/94
*Revised Uses, Distribution and Timing of Indian Land PWSS Grant Funds	90	06/26/95
*Guidance on the Process for Review of Enforcement Actions Against Tribal Facilities	95	02/16/96

INFORMATION COLLECTION RULE (ICR)  

Information Collection Requirements Rule--Protozoa and Enteric Virus Sample Collection Procedures (pocket guide)	89	06/95
ICR Manual for Bench- and Pilot-Scale Treatment Studies	94	01/96
DBP/ICR Analytical Methods Manual	96	04/96
ICR Microbial Laboratory Manual	97	04/96
ICR Sampling Manual	98	04/96
ICR Water Utility Database System User's Guide     Manual and 6 disks     Release 1.1: Instructions and 3 disks::	99	04/96 09/96
ICR Reference Manual: Understanding the ICR	104	08/96
ICR Laboratory Quality Control (QC) Users' Guide (Manual and 5 disks)	106	11/96
ICR Treatment Studies Data Collection Spreadsheets User's Guide(manual and 4 disks)	108	04/97

INTERPRETATION OF THE SAFE DRINKING WATER ACT AND REGULATIONS  

Hand-Pumped Wells	2	05/17/76 Revised 04/08/98
Status of Water Vending Machines Under P.L. 93-523	3	07/26/76 Revised 11/98
Water Hauler	6	12/03/76
Applicability of the Safe Drinking Water Act to Water Haulers	6A	11/26/76
*Application of the SDWA to Persons Adding Corrosion Reducing Chemicals to Drinking Water	8	12/20/76
*Application of the SDWA to Persons Adding Corrosion Reducing Chemicals to Drinking Water	8A	12/08/76 Revised 11/98
Definition of a Public Water System	12	07/12/78
May a Community Public Water System Raise the Defense in an Enforcement Proceeding that it is not a "Public Water System," Under '1401(4) of the SDWA, Because it Does not Provide Water for Human Consumption?	12A	06/20/78
Definition of a Non-Transient Non-Community Water System	34	09/16/87
Response to Charles Mahan Regarding Use of Bottled Water by Non-Transient Non-Community Water Systems to Achieve Compliance	52	12/14/89
*Policy for Applicability of the SWT Regulation to Seawater	66	7/18/91
Definitions of Types of Public Water Systems and Populations Served by Those Systems	66A	08/21/91
Submetering Water Systems	118	03/13/98
Federal Register part VI: Notice: Definition of a Public Water System in SDWA Section 1401(4) as Amended by the 1996 SDWA Amendments	127	08/05/98
Definition of Service Connection	H3	01/88
Scope of NPDWR Coverage	H10	07/88
Purpose and Applicability of Maximum Contaminant Level Goals(MCLGs)	H14	09/88
Determination of MCLGs and MCLs	H15	10/88
Definition of a PWS (Homes with Individual Wells)	H18	12/88 Revised 06/98
Meaning of "Human Consumption" and "Graywater Uses" as it Relates to Public Water Systems	H22	08/89
Treatment Facilities as Public Water Suppliers	H27	03/90 Revised 07/01/98
Health Advisory for Zinc	H36	08/91
Incremental Service Connections	H47	07/92
Sodium Requirements for Public Water Supplies	H51	07/92

INTERSTATE CARRIER CONVEYANCES  

Guidance for Operation and Maintenance (O&M) Plans for ICCs	17	06/20/79
Plan for EPA Implementation of the Safe Drinking Water Act on Interstate Carrier Conveyances	29	10/01/86
Interstate Carriers	H2	09/87
Scope of NPDWR Coverage	H10	07/88

LEAD & COPPER CONTROL ISSUES  

*Application of the SDWA to Persons Adding Corrosion Reducing Chemicals to Drinking Water	8	12/20/76
*Application of the SDWA to Persons Adding Corrosion Reducing Chemicals to Drinking Water	8A	12/08/76 Revised 11/98
*Lead Ban -- Effective Date and Enforcement	32	04/23/87
Handbook for Special Public Notification for Lead: For Public Drinking Water Suppliers	36	03/01/88
*Policy on Regional Response to a State Which Decides to Accept the Five Percent Reduction in its PWSS Program Grant	41	09/16/88
*The SDWA Lead Ban	43	12/07/88 Revised 06/01/98
Scope of Remedial Action Programs in Schools Under the Lead Contamination Control Act of 1988	44	03/17/89 Revised 06/98
*Lab Certification for Lead Contamination Control Act (LCCA)	44A	05/18/89 Revised 07/98
*Implementation and Enforcement of the Lead Prohibition and Lead Public Notification Requirement of the SDWA in Fiscal Years 1990 and Beyond	47	08/18/89
Lead and Copper Rule Guidance Manual:    Volume 1    Volume 2	67	9/91 9/92
Clarification of Lead Service Line Replacement Requirements in Lead Drinking Water Rule	76	07/23/93 Revised 06/01/98
Schedule for Reduced Monitoring under the Lead and Copper Rule	85	10/20/94
Consecutive Systems Regulated Under the National Primary Drinking Water Regulations for Lead and Copper	85A	1/10/92
All Plastic Systems - Compliance with the Lead and Copper Rule	87	04/04/95
*Enforcement and Implementation of Section 1417 of the Safe Drinking Water Act	129	09/24/98
*Approval of Data Sharing Committee Recommendations for Lead and Copper	133	04/01/99
*The Data Sharing Committee's Recommendations for Lead and Copper Rule Violation Reporting	133A	12/29/98
*Public Notification Requirements: Supplemental Notices/Lead	H4	02/88
*Lead Ban Enforcement	H5	04/88
*Pipe Fittings Under the Lead Ban	H7	05/88
*Public Notification Requirements: Lead Notice/Consecutive Systems	H8	06/88
*Effective Date of the Lead Ban	H11	09/88
*Lead Ban Enforcement	H12	09/88
*Effect of the Lead Ban on Sale of Plumbing Fixtures Containing Lead Solder	H16	10/88 Revised 06/01/98
Household Refrigerators and Lead Contamination	H17	10/88
*Lead Ban	H19	12/88
Lead Ban	H20	02/89
Wilson's Disease and Copper	H40	08/91
Faucets Interpreted as "Lead Pipe Fittings"	H43	12/91
Lead Action Level Versus LCCA Guidance Level	H44	12/91
Adverse Health Effects of Lead and Copper from Avenues Other Than Ingestion	H45	07/92
Geographic Distribution of Sample Sites for Lead and Copper	H46	07/92
*Laboratory Certification for Water Quality Parameters	H48	07/92

MICROBIOLOGICAL REGULATIONS  

*Problems Associated with Disinfectant Changes	22	01/27/83 Revised 12/99
Guidance Manual for Compliance with the Filtration and Disinfection Requirements for Public Water Systems Using Surface Water Sources	49	10/89
*Surface Water Treatment Rule: Implementation Manual(Including Appendix D)	55	03/90
*Final SNC Definition for the TCR and Proposed SNC Definition for the SWTR	63	12/19/90
*Final SNC Definition for the SWTR	65	02/28/91
*Policy for Applicability of the SWT Regulation to Seawater	66	7/18/91
*Opportunity for Public Hearing in Conjunction with Filtration Decisions	69	01/03/92
*Guidance on Enforcement of the Requirements of the Surface Water Treatment Rule	70	06/26/92
*Enforceability of Filtration Determinations Under the SWT Regulation	72	11/30/92
*Clarification of Turbidity Requirements for Filtered Systems under the Surface Water Treatment Rule (SWTR)	78	02/01/94
Requirement for a Public Water System Which Takes Fewer than Five Total Coliform Samples per Month to Undergo a Sanitary Survey	82	06/01/94
*The Data Sharing Committee's Review of the Total Coliform Rule Data Needs and Safe Drinking Water Information System (SDWIS/FED) Reporting Requirements	109	06/11/97
*The Data Sharing Committee's Review of the SWTR Data Needs and SDWIS Reporting Requirements	120	04/17/98
Determination of MCLGs and MCLs	H15	10/88
Monitoring Requirements for Consecutive Public Water Systems(Surface Water Treatment Rule)	H30	08/90 Revised 12/99
Repeat Monitoring Requirements for the Total Coliform Rule	H34	02/91
Applicability of the SWTR to Seawater Systems	H35	08/91 Revised 12/99
Reporting Confluent Growth on Total Coliform Samples	H37	08/91
The Effectiveness of Slow Sand Filtration in Total Coliform Removal	H42	12/91 Revised 12/99

POINT OF ENTRY DEVICES  

Marketing and Advertising Tactics and Techniques(Point of use devices)	H13	09/88
Point-of-Entry Devices to Comply with the Total Coliform Rule, Surface Water Treatment Rule (SWTR), and the Interim Enhanced Surface Water Treatment Rule (IESWTR)	H5	12/99

PRIMACY  

*Indian Reservations - Distinction Between EPA Jurisdiction Over Public Water Systems and State Jurisdiction	1	03/01/76
*Approval of State Programs for Primacy Enforcement Authority under Subpart B of the Safe Drinking Water Act	5	11/29/76 Revised 11/98
*Questions and Answers on Non-Indian Water Supply Situations	15	01/08/79
*Final Guidance on Implementing the Indian Primacy Rule for the PWSS and UIC Programs	45	04/25/89
*Additional Guidance on Implementing the Indian Primacy Rule for the PWSS and UIC Programs	46	04/25/89
*Surface Water Treatment Rule: Implementation Manual (including Appendix D)	55	03/01/90
Handbook for EPA Review of State Program Revisions under New Primacy regulations for the PWSS Program	58	06/90
*Delegations of Authority for the Public Water System Supervision Program	60	07/23/90

PUBLIC INVOLVEMENT  

Guidance for Implementation of 40 CFR Part 25 - Public Participation Regulations in State PWSS Program	16	05/21/79 Revised 11/98
*Policy on Publicizing Enforcement Activities	37	03/25/88
*Policy on Publicizing Enforcement Activities	37A	11/21/85
*Press Release Policy	37B	01/30/85
*Opportunity for Public Hearing In Conjunction with Filtration Decisions	69	01/03/92
*Public Release of EPA Enforcement Information	105	08/15/96

PUBLIC NOTIFICATION  

*Guidance on Implementation of the NIPDWRs, 40 CFR 141.31, 141.32, 141.33, and 141.34	10	12/28/77
*Response to Questions Raised by Region IV Concerning Public Notification Requirements for the Unregulated Contaminants	40	04/27/88
*Implementation and Enforcement of the Lead Prohibition and Lead Public Notification Requirement of the SDWA in Fiscal Years 1990 and Beyond	47	08/18/89
General Public Notification for Public Water Systems	48	09/01/89
*Region V's Approach on Unregulated Contaminants Public Notification Requirements	51	12/01/89
*Unregulated Contaminant Public Notification Requirements	51A	10/04/89
*Clarification of Public Notification Requirements for Unregulated Contaminants	51B	05/07/90
*Public Notification Requirements: Supplemental Notices/Lead	H4	02/88
*Public Notification Requirements: Lead Notice/ Consecutive Systems	H8	06/88
Public Notification Requirements	H24	10/89
NTNCWSs and Public Notification for Special Monitoring	H31	08/90

RADIONUCLIDES  

Determining MCLs for Man-made Radionuclides	H1	09/87
Compliance for Gross Beta Particle Activity	H28	05/90 Revised 10/98
*Recordkeeping Requirements for Radionuclides	H50	07/92

REPORTING, RECORD KEEPING AND DATA MANAGEMENT REQUIREMENTS  

*Guidance on Implementation of the NIPDWRs, 40 CFR 141.31, 141.32, 141.33, and 141.34	10	12/28/77
*State Reporting Guidance for Unregulated Contaminant Monitoring	84	08/94
*Inventory Requirements for SDWIS/FED Reporting Requirements - Technical Guidance	126	07/10/98
EPA Protocol for Participation in a PWSS Program Data Verification (in process of of being finalized)	135	No date
*Recordkeeping Requirements for Radionuclides	H50	07/92

SAFE DRINKING WATER INFORMATION SYSTEM (SDWIS)  

*The Data Sharing Committee's Review of the Total Coliform Rule Data Needs and SDWIS/FED Reporting Requirements	109	06/11/97
Regional Data Management Roles	111	07/29/97
*The Data Sharing Committee's Review of the SWTR Data Needs and SDWIS Reporting Requirements	120	4/17/98
Federal Reporting Data System (FRDS-II) Data Entry Instructions	120A	01/93
*Revised Inventory Reporting Requirements for SDWIS/FED - Technical Guidance	126	07/10/98
Policy on Cutoff Dates for Submitting Data to SDWIS/FED	128	08/11/98
Safeguarding Latitude/Longitude Data in SDWIS/FED Database	132	03/23/99
*Approval of Data Sharing Committee Recommendations for Lead and Copper	133	04/01/99
*The Data Sharing Committee's Recommendations for Lead and Copper Rule Violation Reporting	133A	12/29/98

SURFACE WATER & GROUND WATER  

*Opportunity for Public Hearing in Conjunction with Filtration Decisions	69	01/03/92
Final Comprehensive State Ground Water Protection Programs Guidance	73	12/92
State Methods for Delineating Source Water Protection Areas for Surface Water Supplied Sources of Drinking Water	115	08/97
State Source Water Assessment and Protection Program Guidance	116	08/97
Guidance for Future State Ground Water Protection Grants	117	08/05/97

UNREGULATED CONTAMINANTS  

*Response to Questions Raised by Region IV Concerning Public Notification Requirements for the Unregulated Contaminants	40	04/27/88
*Region V's Approach on Unregulated Contaminants Public Notification Requirements	51	12/01/89
*Unregulated Contaminant Public Notification Requirements	51A	10/04/89
*Clarification of Public Notification Requirements for Unregulated Contaminants	51B	05/07/90
*Possible Toxicity of Aluminum	H26	03/90
*Secondary MCL Range for Aluminum(this guidance may be updated)	H38	08/91
Monitoring for Unregulated Contaminants	H49	07/92

VARIANCES AND EXEMPTIONS  

Guidance for Regional Review of Variance and Exemptions Granted by the Primacy States Pursuant to the SDWA	14	09/15/78
Guidance for the Issuance of Variance and Exemptions	18	07/13/79
Variances and Exemptions from Maximum Contaminant Levels under the Safe Drinking Water Act	18A	05/21/79
Illegal Use of Variance/Declaratory Judgement	19	07/21/79 Revised 11/98
Methods of Preventing States from Using Illegal Variances	19A	08/10/79
Availability of Exemptions Under Section 1416(b)(2)(A) of the SDWA as Amended (40 CFR 142.55); Information Memo	30	02/20/87
*Delegations of Authority for the Public Water System Supervision Program	60	07/23/90
Variances and Administrative Orders	H23	08/89 Revised 09/98
*Variances and Exemptions for Fluoride Revised in the Phase II Rule	H52	07/92