OHA Drinking Water Services
OR41
PWS ID: 93536 ---- ODOT HD OAK GROVE NORTHBOUND
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 1.38 1.0Y
Feb 01, 2026 DIST-A 1 1 1.11 0.9Y
Jan 01, 2026 DIST-A 1 1 0.51 1.0Y
Nov 01, 2025 DIST-A 3 3 0.35 0.8Y
Oct 01, 2025 DIST-A 4 7 0.33 0.8Y
Jul 01, 2025 DIST-A 1 1 2 0.7Y
Apr 01, 2025 DIST-A 1 1 0.32 0.3Y
Jan 01, 2025 DIST-A 1 1 0.2 0.3Y
Oct 01, 2024 DIST-A 1 1 0.32 0.3Y