OHA Drinking Water Services
Contact Report Details |
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| PWS ID: | OR41 00665 | ||
| PWS Name: | TUALATIN VALLEY WATER DISTRICT | ||
| Who Was Contacted: | Bill Richmond | ||
| Contact Phone: | (Email address hidden) | ||
| Contact Date: | 11/10/2025 | ||
| Contacted By: | ALFAFARA, NICOLE (DWP) | ||
| Contact Method/Location: | |||
| Assistance Type: | WATER QUALITY ALERT RESPONSE | ||
| Reasons: | Coliform |
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| Details: | On 11/5/2025 a routine coliform sample from Station #162 was found TC+/EC-. On 11/6/2025 repeat samples from this sample station were found TC+/EC- again. Upstream, downstream samples were all negative both days. TVWD crews flushed the area and collected another round of samples (repeats and special/investigatory) on 11/7/2025, all of which were found coliform absent. No Level 1 Coliform Investigation is required at this time. TVWD is investigating the cause of the positive results from the sample station. | ||
| Associated Alerts: | TCR-4863 - 11/08/2025 - COLIFORM (TCR) |
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