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Chapter 246-290 WAC

Last Update: 3/30/12

GROUP A PUBLIC WATER SUPPLIES

WAC Sections

PART 1.
GENERAL PROVISIONS
Purpose and scope.
Guidance.
Definitions, abbreviations, and acronyms.
Applicability.
Adoption by reference.
General administration.
Water system ownership.
Engineering requirements.
Enforcement.
Variances, exemptions, and waivers.
PART 2.
PLANNING AND ENGINEERING DOCUMENTS
Water system plan.
Small water system management program.
Duty to provide service.
Place of use expansion.
Consistency with local plans and regulations.
Project report.
Construction documents.
Project report and construction document submittal exceptions.
Source approval.
Interties.
Source water protection.
Existing system as-built approval.
PART 3.
DESIGN OF PUBLIC WATER SYSTEMS
Design standards.
Drinking water materials and additives.
Water demand design criteria.
Water system physical capacity.
Distribution systems.
Finished water storage facilities.
Treatment design.
PART 4.
WATER QUALITY
Monitoring requirements.
Maximum contaminant levels (MCLs) and maximum residual disinfectant levels (MRDLs).
Follow-up action.
PART 5.
WATER SYSTEM OPERATIONS
Operations and maintenance.
Sanitary surveys.
Reliability and emergency response.
Disinfection of drinking water.
Treatment techniques for groundwater systems.
Operation of chemical contaminant treatment facilities.
Fluoridation of drinking water.
Uncovered finished water storage facilities.
Recordkeeping and reporting.
Recordkeeping and reporting for groundwater systems.
Cross-connection control.
Metering requirements.
Severability.
PART 6.
SURFACE WATER TREATMENT
 
Subpart A - Introduction and General Requirements
Purpose of surface water treatment.
Applicability of surface water treatment requirements.
General requirements.
Treatment technique violations.
Follow-up to treatment technique violations.
Determination of disinfectant contact time (T).
Analytical requirements.
SWTR records.
Determination of GWI sources.
Subpart B - Requirements for Filtered Systems
Compliance requirements for filtered systems.
Filtration technology and design criteria for existing filtered systems.
Treatment criteria for filtered systems.
Filtration.
Disinfection for filtered systems.
Monitoring for filtered systems.
Reporting for filtered systems.
Watershed control.
Subpart C - Requirements for Systems Installing Filtration Facilities
Compliance requirements for existing unfiltered systems installing filtration.
Interim treatment requirements.
Interim monitoring and reporting.
Filtration technology and design criteria.
Reliability for filtered systems.
Subpart D - Requirements for Other Unfiltered Systems
Compliance requirements for unfiltered systems.
Criteria to remain unfiltered.
Criteria for unfiltered systems with a "limited alternative to filtration" to remain unfiltered.
Disinfection for unfiltered systems.
Monitoring for unfiltered systems.
Reporting for unfiltered systems.
PART 7.
REPORTING
Subpart A - Public Notification and Consumer Information
Public notification.
Public notice content.
Public notification distribution.
Public notification mandatory language.
Special public notification requirements.
Consumer information.
Public notification special provisions.
 
Subpart B - Consumer Confidence Reports
Purpose and applicability of the consumer confidence report requirements.
Reporting dates.
Report contents—Source water.
Report contents—Definitions.
Report contents—Information on detected contaminants.
Report contents—Information on Cryptosporidium, radon, and other contaminants.
Report contents—Compliance with National Primary Drinking Water Regulations.
Report contents—Variances and exemptions.
Report contents—Additional information.
Report contents—Required additional health information.
Report delivery and recordkeeping.
Regulated contaminants.
Report contents—Groundwater systems.
PART 8.
WATER USE EFFICIENCY
Purpose and applicability.
Water use efficiency program.
Distribution system leakage standard.
Water use efficiency goal setting.
Water use efficiency performance reports.
FEES
Water system evaluation and project review and approval fees.