Resources For Applicants, Owners, and Operators
Operations and Maintenance References
Asset Management for Small Systems 331-445 (PDF)
Chlorination Controls 331-398 (PDF)
Coliform Sampling Procedure 331-225 (PDF)
Color, Taste, and Odor Problems 331-286 (PDF)
Emergency Response Planning Guide 331-211b (Word)
Flood Advice for Drinking Water Systems 331-300 (PDF)
How to complete a Coliform Lab Slip 331-247 (PDF)
Nitrate Sampling Procedure 331-222 (PDF) | Spanish (PDF)
Preventative Maintenance Program 331-351b (PDF)
Private Wells: Information for owners 331-349 (PDF)
Public Health Advisory: Coliform 331-179 (PDF) | Spanish (PDF)
Pump House Piping 331-406 (PDF)
Pressure Relief Valves on Pressure Tanks 331-429 (PDF) | Spanish (PDF)
Radionuclides In Drinking Water 331-056 (PDF)
Sanitary Protection of Reservoirs—Vents 331-250 (PDF) | Spanish (PDF)
Sanitary Protection of Reservoirs—Hatches 331-249 (PDF) | Spanish (PDF)
Simple Fixes for Wellhead Openings 331-232 (PDF) | Spanish (PDF)
Start-Up and Shut-Down Assistance for Seasonal Noncommunity Water Systems webpage
Treatment of Drinking Water for Emergency 331-115 (PDF)
Troubleshooting Bladder Pressure Tanks 331-342 (PDF) | Spanish (PDF)
Troubleshooting Checklist for Coliform Contamination 331-180 (PDF)
Water Rates: Paying for Drinking Water 331-327 (PDF)
Design and Approval References
Project Approval Application 331-149-F (Word)
Construction Completion Report 331-121F (Word)
Approved Satellite Management Agency list webpage
County assignments of ODW staff—planners and engineers
Covenants for Public Water Supply Protection 331-048b (PDF)
Example of information notice to title (property disclosure) (Word)
Group B Design Guidelines 331-467 (PDF)
Group B Design Workbook 331-468 (Word)
Group B Regulations, chapter 246-291 WAC
Pitless Unit, Pitless Adaptors, and Water Tight Well Caps webpage
Water System Design Manual (for Group A systems) 331-123 (PDF)
Public Notice References
E. coli in water system 331-484 (Word)
Nitrate above the MCL 331-485 (Word)
Arsenic in the water system 331-482 (Word)
Cross-connection event 331-495 (Word)