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| Introduction :: Data Search Options :: Water System Search :: DWS Home :: DWS Rules |
OHA Drinking Water Services
Contact Report Details |
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| PWS ID: | OR41 00379 | ||
| PWS Name: | JOINT WATER COMMISSION | ||
| Who Was Contacted: | Zac Bertz | ||
| Contact Phone: | 503-758-4446 (Email address hidden) | ||
| Contact Date: | 06/16/2021 | ||
| Contacted By: | ALFAFARA, NICOLE (DWP) | ||
| Contact Method/Location: | Phone | ||
| Assistance Type: | OTHER WATER QUALITY - Chlorine Supply Shortage | ||
| Reasons: | Chlorine |
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| Details: | 6/16/21: System reached out to DWS in response to the possible future chlorine supply shortage inquiring about 1) ceasing prechlorination to conserve sodium hypochlorite supply and 2) temporarily feeding 12.5% sodium hypochlorite to help extend chlorine gas supply. System ceased prechlorination the afternoon of 6/16/21. 6/17/21: DWS Staff informed system ceasing prechlorination was an option assuming CT is met, sodium hypochlorite would have to be NSF 60/61 certified, and to keep DWS Staff updated. 6/28/21: System has about 11,000 lbs of chlorine on hand with usage around 750 lbs per day estimating a supply of 14 days. However, they are expecting 26-300 gallon totes of 12.5% sodium hypochlorite tomorrow (6/29) and 3 tons of chlorine later in the week. System is continuing without prechlorination as a chlorine saving measure. 6/29/21: With supply on hand system is estimating a supply of 27-30 days. 7/6/21: Pre-chlorination will resume on 7/12/21. 8/13/21: On the evening of 8/12 system exhausted sodium hypochlorite supply and switched back to chlorine gas for prechlorination. |
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