OHA Drinking Water Services
OR41
PWS ID: 05437 ---- TILLAMOOK RIVER WATER DISTRICT
Maximum Residual Disinfection Level (MRDL) Samples
MRDL Monitoring Requirements :: Excel Spreadsheet

Monitoring
Period
Entry
Point
Samples
Required
Samples
Collected
Period
Avg
Annual
Avg
Level
Compliance
Oct 01, 2025 DIST-A 1 3 0.5 0.5Y
Jul 01, 2025 DIST-A 1 3 0.4 0.5Y
Apr 01, 2025 DIST-A 1 3 0.49 0.6Y
Jan 01, 2025 DIST-A 1 3 0.6 0.6Y
Oct 01, 2024 DIST-A 1 3 0.63 0.6Y