OHA Drinking Water Services
OR41
PWS ID: 95706 ---- NPS OREGON CAVES NATIONAL MONUMENT O&M
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 1.69 1.6Y
Feb 01, 2026 DIST-A 1 1 1.79 1.5Y
Jan 01, 2026 DIST-A 1 1 1.63 1.5Y
Dec 01, 2025 DIST-A 1 2 1.7 1.5Y
Nov 01, 2025 DIST-A 1 2 1.85 1.4Y
Oct 01, 2025 DIST-A 1 2 1.5 1.4Y
Sep 01, 2025 DIST-A 1 2 1.7 1.3Y
Aug 01, 2025 DIST-A 1 2 1.4 1.3Y
Jul 01, 2025 DIST-A 1 2 1.44 1.3Y
Jun 01, 2025 DIST-A 1 2 1.23 1.3Y
May 01, 2025 DIST-A 1 2 1.25 1.3Y
Apr 01, 2025 DIST-A 1 2 1.55 1.3Y
Mar 01, 2025 DIST-A 1 2 1.5 1.3Y
Feb 01, 2025 DIST-A 1 2 1.5 1.2Y
Jan 01, 2025 DIST-A 1 2 1 1.2Y
Dec 01, 2024 DIST-A 1 2 1.32 1.3Y
Nov 01, 2024 DIST-A 1 2 1.1 1.2Y
Oct 01, 2024 DIST-A 1 2 1 1.2Y
Sep 01, 2024 DIST-A 1 2 1.51 1.2Y
Aug 01, 2024 DIST-A 1 2 1.56 1.2Y
Jul 01, 2024 DIST-A 1 2 1.1 1.1Y
Jun 01, 2024 DIST-A 1 2 1 1.1Y
May 01, 2024 DIST-A 1 2 1.5 1.1Y
Apr 01, 2024 DIST-A 1 2 1 1.1Y
Mar 01, 2024 DIST-A 1 2 1 1.1Y
Feb 01, 2024 DIST-A 1 2 1 1.1Y
Jan 01, 2024 DIST-A 1 3 2 1.1Y
Dec 01, 2023 DIST-A 1 2 1 1.0Y
Nov 01, 2023 DIST-A 1 2 1 1.0Y
Oct 01, 2023 DIST-A 1 2 1 1.0Y
Sep 01, 2023 DIST-A 1 2 1 1.0Y
Aug 01, 2023 DIST-A 1 2 1 1.0Y
Jul 01, 2023 DIST-A 1 2 1 1.0Y
Jun 01, 2023 DIST-A 1 0 0Y
May 01, 2023 DIST-A 1 0 0Y
Apr 01, 2023 DIST-A 1 0 0Y