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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 00665 | ||
| PWS Name: | TUALATIN VALLEY WATER DISTRICT | ||
| Who Was Contacted: | Joel Cary | ||
| Contact Phone: | 503-848-3019 (Email address hidden) | ||
| Contact Date: | 06/13/2019 | ||
| Contacted By: | BAIRD, GREGG (DWP) | ||
| Contact Method/Location: | |||
| Assistance Type: | WATER QUALITY ALERT RESPONSE | ||
| Reasons: | Coliform |
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| Details: | Joel reported that two routine samples collected yesterday (Wed. 6/12/19) from sample station #145 and sample station #95 came back positive for total coliform (absent E. coli). These sample stations are in hydraulically separate areas from each other. Total chlorine residual at the time was normal (1.31 ppm & 1.71 ppm, respectively). Three repeats will be collected today (upstream, downstream, and the original site) for each positive (total of 6 repeats) as well as a triggered source sample from the Grabhorn well which was running at the time. There was no suspected possible cause for the positive. Will wait for results of repeat samples that should be available Friday 6/14/19 and respond accordingly. UPDATE: Joel reported Friday afternoon 6/14/19 that all repeats and the triggered sample were negative. No further action required at this time. | ||
| Associated Alerts: | COLI18926 - 06/13/2019 - COLIFORM (TCR) |
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