OHA Drinking Water Services
OR41
PWS ID: 94811 ---- KNIFE RIVER PRESTRESS INC
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 1 0.22 0.3Y
Jul 01, 2025 DIST-A 1 1 0.24 0.4Y
Apr 01, 2025 DIST-A 1 1 0.29 0.5Y
Jan 01, 2025 DIST-A 1 2 0.3 0.6Y
Oct 01, 2024 DIST-A 1 2 0.8 0.8Y