OHA Drinking Water Services
Contact Report Details |
|||
| PWS ID: | OR41 00635 | ||
| PWS Name: | SUNRISE WATER AUTHORITY | ||
| Who Was Contacted: | Tim Jannsen | ||
| Contact Phone: | 503-761-0220 (Email address hidden) | ||
| Contact Date: | 06/17/2021 | ||
| Contacted By: | NUSRALA, JAMES (DWP) | ||
| Contact Method/Location: | Phone | ||
| Assistance Type: | WATER QUALITY ALERT RESPONSE | ||
| Reasons: | Coliform GWR |
||
| Details: | Sunrise had two positive routine coliform samples on 6/14, one for total in the low part of system, one for both total and E. coli in the Sunridge Zone, east in Damascus area. Chlorine residuals slightly lower than normal, 0.4 to 0.65 mg/L, with these samples. System collected 3 repeats for each routine, on 6/16, with all six repeats returning absent for both coliform and E. coli on 6/17. As no repeats were positive for total coliform, there is no acute MCL boil water notice or coliform investigation required. No wells were used at this time, so no triggered source samples required. Sunrise will continue with balance of June routines. A coliform level 1 investigation will be required if more than 5%, or 3 total distribution samples (for a requirement of 50 monthly) are total coliform positive, so one more coliform positive in June will trigger this. Sunrise will re-evaluate sample technique and sample stations. No further action required at this time. | ||
| Associated Alerts: | COLI21016 - 06/15/2021 - COLIFORM (TCR) , E. COLI |
||