OHA Drinking Water Services
OR41
PWS ID: 95174 ---- COLUMBIA RIVER DAIRY
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
Mar 01, 2026 DIST-A 1 1 0.6 0.8Y
Feb 01, 2026 DIST-A 1 0 0.8Y
Jan 01, 2026 DIST-A 1 1 0.8 0.8Y
Dec 01, 2025 DIST-A 1 1 0.8 0.8Y
Nov 01, 2025 DIST-A 1 2 1 0.8Y
Oct 01, 2025 DIST-A 1 0 0.8Y
Sep 01, 2025 DIST-A 1 1 0.8 0.8Y
Aug 01, 2025 DIST-A 4 4 1.2 0.8Y
Jul 01, 2025 DIST-A 1 0 0.8Y
Jun 01, 2025 DIST-A 1 1 0.4 0.8Y
May 01, 2025 DIST-A 1 1 0.6 0.8Y
Apr 01, 2025 DIST-A 1 1 0.8 0.9Y
Mar 01, 2025 DIST-A 1 1 0.6 0.9Y
Feb 01, 2025 DIST-A 1 1 1 1.0Y
Dec 01, 2024 DIST-A 3 0 1.0Y
Oct 01, 2024 DIST-A 4 1 1 1.0Y