OHA Drinking Water Services
OR41
PWS ID: 94930 ---- LANGDON LAKE WATER COOPERATIVE

Most Recent Water System Survey
Survey date: Nov 13, 2025
Notification date: Nov 18, 2025 (5 days)
Regulating agency: DWS (REGION 1)
Survey frequency: 3 YR  -  Visit the Water System Surveys page to see the list of surveys due each year.
Significant deficiencies and unmet rule requirements:
Category Significant deficiency or unmet rule requirement Due date Resolved date
Management & Operations No operations and maintenance manualMar 24, 2026 Dec 01, 2025


 Hide Site Visit History
Water System Site Visit History
Reason Visit date Frequency Next due Notification date
(Days after survey)
Responsible
agency
Comments and
significant deficiencies or unmet rule requirements
Sanitary Survey, Finished (SNSV) 11/13/2025 3 YR  * 11/18/2025 (5) REGION 1 Show details
Sanitary Survey, Finished (SNSV) 07/14/2020 5 YR  * 07/28/2020 (14) REGION 1 Show details
Sanitary Survey, Finished (SNSV) 10/28/2015 5 YR  * 11/24/2015 (27) REGION 1 Show details
Sanitary Survey, Finished (SNSV) 07/24/2009 5 YR  * 08/26/2009 (33) DWP Hide details
  Comments:
Significant deficiencies: No flap vlave/screen on overflow at Betty Lou Spring No coliform sampling plan No operations and maintenance manual No emergency response plan Significant rule violation: Non-NSF approved chemicals Recommendations: Routine flushing of stagnant water Annual inspections of water system components
This site visit has not been entered into the deficiency database.

Sanitary Survey, Finished (SNSV) 09/20/2004 5 YR  * DWP Show details