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OHA Drinking Water Services
Contact Report Details |
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| PWS ID: | OR41 01139 | ||
| PWS Name: | MIDLAND WATER ASSOCIATION | ||
| Who Was Contacted and Phone: | Phil White (503) 728-3191 | ||
| Contact Date: | 08/03/2011 | ||
| Contacted By: | NUSRALA, JAMES (REGION 1) | ||
| Contact Method/Location: | Office | ||
| Assistance Type: | BOIL WATER | ||
| Reasons: | SWTR Operations |
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| Details: | SUMMARY: Follow up on boil water notice DETAILS: Spoke with Phil regarding status of boil water notice at Midland. Phil verified that notice was pre-emptive and posted in anticipation of losing water pressure as the plant pump went down on 8/2 in the am. Pump replaced on 8/2 in pm, and pressure never dropped below 20 psi in system. Additionally, Phil verified that CTs were met at all times beginning went pump went down on 8/2. The lowest chlorine residual on 8/2 based on several grab samples taken at the plant was 0.8 mg/l, and CT achieved was around 70, with a CT required for 1-log giardia inactivation of around 40. Furthermore, residuals in the system taken at 3 points were 1 ppm today (8/3). ACTION NEEDED: Midland to notify users that boil water notice may be lifted through calling using a phone tree to all users. Phil to prepare a written summary of events related to losing pumping ability at the plant for DWP files. DWP to continue to support the Association. | ||