OHA Drinking Water Services
OR41
PWS ID: 91105 ---- ODOT HD SAGE HEN HILL REST AREA
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 0 0.1Y
Feb 01, 2026 DIST-A 1 0 0.1Y
Jan 01, 2026 DIST-A 1 3 0.3 0.2Y
Dec 01, 2025 DIST-A 1 0 0.1Y
Nov 01, 2025 DIST-A 1 0 0.1Y
Oct 01, 2025 DIST-A 1 2 0.18 0.1Y
Sep 01, 2025 DIST-A 3 3 0.18 0.1Y
Jul 01, 2025 DIST-A 4 7 0.09 0.1Y
Apr 01, 2025 DIST-A 1 1 0.11 0.2Y
Jan 01, 2025 DIST-A 1 1 0.07 0.2Y
Oct 01, 2024 DIST-A 1 1 0.28 0.3Y