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OHA Drinking Water Services
Contact Report Details |
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| PWS ID: | OR41 00665 | ||
| PWS Name: | TUALATIN VALLEY WATER DISTRICT | ||
| Who Was Contacted: | Tara Vanderwey | ||
| Contact Phone: | 503-848-3087 (Email address hidden) | ||
| Contact Date: | 06/20/2019 | ||
| Contacted By: | BAIRD, GREGG (DWP) | ||
| Contact Method/Location: | |||
| Assistance Type: | WATER QUALITY ALERT RESPONSE | ||
| Reasons: | Coliform |
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| Details: | Tara reported that a routine sample collected yesterday (Wed. 6/19/19) from sample station #121 came back positive for total coliform (absent E. coli). The source for this water is currently approaching a 50/50 blend of PWB and JWC sources. Chlorine residual at this site was low at 0.09 mg/L which can be attributed to blending. This is the third positive total coliform routine sample this month. Three repeats will be collected today (upstream, downstream, and the original site) as well as a triggered source sample from the Grabhorn well which was running at the time. Will wait for results of repeat samples that should be available Friday 6/21/19 and respond accordingly. UPDATE: Bill Richmond of TVWD reported Friday afternoon 6/21/19 that all repeats and the triggered sample were negative. No further action required at this time. | ||
| Associated Alerts: | COLI18941 - 06/20/2019 - COLIFORM (TCR) |
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