ALABAMA DEPARTMENT OF ENVIRONMENTAL …

1 ALABAMA DEPARTMENT OF ENVIRONMENTAL management WATER DIVISION - WATER SUPPLY PROGRAM DIVISION 335-7 1400 Coliseum Boulevard Montgomery, ALABAMA 36110-2059 (334) 271-7700 CITE AS ADEM Admin. Code r. REVISED EFFECTIVE: February 3, 2017 i ALABAMA DEPARTMENT OF ENVIRONMENTAL management WATER DIVISION - WATER SUPPLY PROGRAM DIVISION 335-7 TABLE OF CONTENTS Chapter 335-7-1 Page No. General Provisions Definitions .. 1-1 Applicability .. 1-7 Variance from Regulations .. 1-7 Variance Application .. 1-8 Exemption .. 1-9 Exemption Application .. 1-9 Exemption Disposition .. 1-10 Chapter 335-7-2 Primary Drinking Water Standards Applicability .. 2-1 Sampling and Analytical Requirements .. 2-2 Inorganic Chemical Standards and Monitoring Requirements.

2 2-2 Synthetic Organic Chemical (SOCs) Standards and Monitoring Requirements .. 2-7 Volatile Synthetic Organic Chemicals (VOCs) Standards and Monitoring Requirements .. 2-10 Turbidity Standards and Monitoring Requirements . 2-13 Microbiological Standards and Monitoring Requirements .. 2-15 Radionuclide Standards and Monitoring Requirements .. 2-19 Maximum Residual Disinfectant Levels and Monitoring Requirements (MRDLs) .. 2-25 Special Monitoring and Analytical Requirements for Unregulated Contaminants .. 2-26 Stage 1 Disinfection Byproducts .. 2-27 Stage 2 Disinfection Byproducts .. 2-32 Distribution System Evaluation .. 2-37 Standard Monitoring Plan .. 2-41 System Specific Study .. 2-44 Operational Evaluation Level .. 2-48 Cryptosporidium Monitoring and Compliance.

3 2-49 Monitoring Requirements of Consecutive Systems .. 2-58 Monitoring Waiver Criteria .. 2-58 Reporting Requirements .. 2-59 ii Public Assessments .. 2-60 2-65 Chapter 335-7-3 Secondary Drinking Water Standards 3-1 Secondary Maximum Contaminant Levels .. 3-1 Monitoring Requirements .. 3-2 Special Monitoring for Corrosivity 3-2 Analytical Requirements .. 3-3 Reporting Requirements .. 3-3 Deviation from Secondary Standards .. 3-4 Public Notification .. 3-4 Chapter 335-7-4 Permit Requirements and Procedures 4-1 Permit .. 4-1 Requirements for System Additions .. 4-2 for New Water Systems .. 4-3 Requirements .. 4-4 Approval/Denial .. 4-5 Permit Renewal .. 4-5 of a Water Supply Permit .. 4-6 to Approved Plans and Specifications.

4 4-6 Completed Project Approval .. 4-7 Consecutive Water System Requirements .. 4-8 Segmental Water System Requirements .. 4-9 Continuation of Expiring Permits .. 4-10 Chapter 335-7-5 Groundwater Sources and Treatment 5-1 Definitions .. 5-2 Site Requirements .. 5-2 Well Casing Requirements .. 5-2 Grouting Requirements .. 5-3 Blasting, Cleaning and Chemical Conditioning .. 5-4 Aquifer Test .. 5-4 Development .. 5-5 Capacity Test .. 5-5 Well Construction Information .. 5-6 Water Level Measurement .. 5-7 Shallow Wells .. 5-7 Springs .. 5-8 Abandoned Wells .. 5-8 Ground Water Quality .. 5-9 iii Treatment of Groundwater .. 5-9 Disinfection Requirements .. 5-10 Filtration Requirements .. 5-11 Filtration Processes.

5 5-11 Chemicals Used in Ground Water Treatment .. 5-11 Additional Requirements for Ground Water Under the Influence of Surface Water .. 5-12 Ground Water Rule .. 5-12 New Groundwater Facilities .. 5-23 Chapter 335-7-6 Surface Water and Treatment Definitions .. 6-1 Applicability .. 6-4 Source Selection Report .. 6-4 Treatment Requirements .. 6-5 Surface Water Intake Structures .. 6-6 Conventional Treatment Processes .. 6-7 Alternative Treatment Processes .. 6-9 Membrane Filtration .. 6-9 High Rate Filtration Requirements .. 6-10 Disinfection .. 6-12 Disinfection Profiling and Benchmarking .. 6-13 Chemicals Used in Water Treatment .. 6-15 Treatment Process Equipment.

6 6-16 Enhanced Coagulation .. 6-16 Lighting and Power Requirements .. 6-20 Treatment Plant Security Requirements .. 6-20 Laboratory Facilities .. 6-21 Filter Backwash Recycling .. 6-22 Cryptosporidium Treatment Requirements .. 6-23 Cryptosporidium Treatment Requirement Schedule .. 6-25 Microbial Toolbox Options .. 6-26 Source Toolbox Components .. 6-27 Pre-Filtration Treatment Toolbox Components .. 6-30 Treatment Performance Toolbox Components .. 6-32 Additional Filtration Toolbox Components .. 6-33 Inactivation Toolbox Components .. 6-39 Chapter 335-7-7 Distribution of Drinking Water Applicability .. 7-1 Permit Requirements .. 7-1 Distribution Facilities Design and Construction Requirements.

7 7-1 Water Storage Tank Maintenance .. 7-3 iv Chapter 335-7-8 Lead Ban Requirements Applicability .. 8-1 Plumbing Codes .. 8-1 Materials Distribution Requirements .. 8-1 Installation Restrictions .. 8-2 Chapter 335-7-9 Cross-Connection Control Requirements Applicability .. 9-1 Cross Connections Prohibited .. 9-1 Protection 9-2 Responsibility of the Supplier of Water .. 9-2 Discontinuance of Service .. 9-2 Chapter 335-7-10 Operation, Record Keeping, And Reports Applicability .. 10-1 Certified Operator Requirements .. 10-1 Water Quality Control Tests .. 10-1 Disinfectant Residual Requirements .. 10-3 Records .. 10-4 Reports.

8 10-11 Chapter 335-7-11 Control of Lead and Copper Definitions .. 11-1 11-2 Compliance with Lead and Copper Levels .. 11-2 Initial Monitoring to Establish Action Levels .. 11-3 Repeat Monitoring Requirements .. 11-4 Number of Lead/Copper Monitoring 11-5 Monitoring Site Selection .. 11-5 Lead/Copper Monitoring Collection Procedures .. 11-7 Invalidation of Lead or Copper Tap Water Samples .. 11-7 Monitoring Waivers .. 11-8 Action Level Non-Compliance .. 11-9 Corrosion Control Treatment Requirement .. 11-10 Corrosion Control Study .. 11-12 Corrosion Control Parameter Monitoring Requirements .. 11-14 Source Water Monitoring and Treatment .. 11-16 Lead Service Line Replacement.

9 11-16 Public Education Requirement .. 11-18 Reporting Requirements .. 11-24 v Chapter 335-7-12 Wellhead Protection Program Purpose .. 12-1 Applicability .. 12-1 Definitions .. 12-1 Local Wellhead Protection Plan .. 12-2 Chapter 335-7-13 Reserved Chapter 335-7-14 Consumer Confidence Reports Applicability .. 14-1 Definitions .. 14-1 Effective Dates .. 14-2 Content of Reports .. 14-2 Additional Reporting Contents .. 14-8 Required Additional Health Information .. Report Delivery and Recordkeeping .. 14-11 14-12 Appendix A Standard List of Primary Drinking Water Contaminants for CCR .. A-1 Appendix B Regulated Contaminants .. B-1 Appendix C Health Affects and Required Language for Specific Contaminants.

10 C-1 Chapter 335-7-15 Source Water Assessment Program Applicability .. 15-1 Definitions .. 15-1 Source Water Assessment Program for a Groundwater Source .. 15-5 SWAA Delineation for a Groundwater Community Water Source .. 15-5 SWAA Delineation for a Groundwater Transient Non-Community Water Source .. 15-7 SWAA Delineation for a Groundwater Non-Transient Non-Community Water Source .. 15-8 Contaminant Inventory Development for a Groundwater Source .. 15-8 Susceptibility Analysis for a Groundwater Source .. 15-8 Observation Wells .. 15-9 Aquifer Test .. 15-10 Source Water Assessment for a Surface Source .. 15-11 Delineation of Watersheds .. 15-11 vi Contaminant Source Inventory Development for a Surface Source.