OHA Drinking Water Services
OR41
PWS ID: 01241 ---- ZIG ZAG WATER CO-OP
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 0.18 0.4Y
Feb 01, 2026 DIST-A 1 1 0.41 0.4Y
Jan 01, 2026 DIST-A 1 1 0.27 0.5Y
Dec 01, 2025 DIST-A 1 1 0.7 0.6Y
Nov 01, 2025 DIST-A 1 1 0.61 0.6Y
Oct 01, 2025 DIST-A 1 1 0.82 0.6Y
Sep 01, 2025 DIST-A 1 1 0.63 0.6Y
Aug 01, 2025 DIST-A 1 1 0.17 0.5Y
Jul 01, 2025 DIST-A 1 1 0.5 0.6Y
Jun 01, 2025 DIST-A 1 1 0.65 0.6Y
May 01, 2025 DIST-A 1 1 0.11 0.6Y
Apr 01, 2025 DIST-A 1 1 0.33 0.7Y
Mar 01, 2025 DIST-A 1 1 0.08 0.7Y
Feb 01, 2025 DIST-A 1 1 1.58 0.8Y
Jan 01, 2025 DIST-A 1 1 0.79 0.7Y
Dec 01, 2024 DIST-A 1 1 0.92 0.6Y
Nov 01, 2024 DIST-A 1 1 0.84 0.5Y
Oct 01, 2024 DIST-A 1 1 0.13 0.1Y
Dec 01, 2004 DIST-A 1 0 0Y
Nov 01, 2004 DIST-A 1 0 0Y
Oct 01, 2004 DIST-A 1 0 0Y
Sep 01, 2004 DIST-A 1 0 0Y