OHA Drinking Water Services
OHA Drinking Water Services
Contact Report Details
PWS ID: OR41 00977
PWS Name: JACKSON CREEK WATER ASSOCIATION
 
Who Was Contacted: Mike Johnson
Contact Phone: 541-207-4526 (Email address hidden)
Contact Date: 09/22/2021
Contacted By: KRUGER, SCOTT (BENTON COUNTY)
Contact Method/Location: Email
 
Assistance Type: VIOLATION RESPONSE
Reasons: Disinfection Byproducts
Lead or Copper
Operations
 
Details: I e-mailed Mike regarding reviewing three issues.

Reviewing the Locational Running Annual Average (LRAA) for Trihalomethane which exceeded the MCL in November 2018 and August 2019. The LRAA for quarterly samples summited from June to December 2020 were above .060 ppm. The LRAA dropped to .058 in March 2021, the second quarter of 2021 was not sampled. A sample was submitted in August 2021 and the LRAA is .054. In consultation with DWP Region 2 staff and the DWP DMCE it was determined quarterly sampling should continue until the LRAA is consistently at or below .060 which is the rule requirement to go from a quarterly schedule to an annual schedule.
They worked with the circuit rider program to reduce stored water for better turnover and regularly flush the system.

I requested consumer confidence for 2019 and 2020 be submitted. The operator supplied the reports and they were sent to DWP compliance for validation.

The water system continues to work with Dan Vaage with the circuit rider program to address a copper MCL violation in November 2019. Dan recommended aeration over orthophosphate for corrosion control. Bucket tests were performed with results in Ph being elevated to above 8.0, we need to review system Ph test performed by the operator in 2019- 2020.
The system is on a dual track and will likely test out of corrosion control but still needs to declare a treatment method should the have a future MCL violation by 9/30/31.

 
Associated Violations: Viol #902815421, 04/01/2021 - 06/30/2021: DBP - DBP Late/Nonreporting

More information for this water system: SDWIS ID 3489
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