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OHA Drinking Water Services
Contact Report Details |
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| PWS ID: | OR41 00977 | ||
| PWS Name: | JACKSON CREEK WATER ASSOCIATION | ||
| Who Was Contacted: | Mike Johnson | ||
| Contact Phone: | 541-207-3809 | ||
| Contact Date: | 08/04/2020 | ||
| Contacted By: | CIVIL WEST ENGINEERS, INC (DWP) | ||
| Contact Method/Location: | Phone | ||
| Assistance Type: | CIRCUIT RIDER ASSISTANCE | ||
| Details: | Background/Problem Identification: Based on the findings of the bucket test and discussion with OHA , the bucket test data was considered unusual, not based wholly on the high starting point (8.1), but rather the fact that this is a groundwater source (typically groundwater sources have very stable pH) and prior laboratory testing in distribution yielded consistent pH readings of 7.6. OHA recommended further pH testing be done before recommendation of a treatment method. Assistance Provided: Due to the discrepancy between the recent pH readings from the testing lab and the more recent “bucket test” pH results, we are recommended that the JCWA purchase a pH meter and establish a consistent testing schedule daily or weekly. With the pH data provided by JCWA, we will be able to better recommend a corrosion treatment method. Mike Johnson of JCWA obtained a suitable pH meter and tested pH over a period of several weeks both at the treatment plant and at individual residences. Mike found the pH to be quite consistent across all sample site and averaged 7.6 to 7.7. We believe the prior “high” readings during the bucket test to be an anomaly, likely due to a pH meter that was out of calibration. Follow-Up Actions Needed: Circuit Rider will reach out to OHA with Mike’s pH data to discuss either testing further or possibly treatment options if the current pH data set is considered sufficient. We are still also recommending that another round of copper testing be done, as there has only been one exceedance on record. Further copper exceedances would support adding treatment to the system, where a single exceedance should not mandate treatment be installed in the event that the exceedance was an anomaly. Circuit rider is available to assist as needed for treatment option selection/sizing, and possible further testing. |
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