OHA Drinking Water Services
OHA Drinking Water Services
Contact Report Details

PWS ID: OR41 00878
Who Was Contacted and Phone: Jennifer Joe (503) 718-2599
Contact Date: 02/12/2015
Contacted By: BAIRD, GREGG (REGION 1)
Contact Method/Location: Office
Reasons: Coliform
Details: SUMMARY: Routine +TC DETAILS: On Wednesday 2/11/15 Jennifer reported that a routine sample collected Monday 2/10/15 at 13070 SW Roshak Rd came back positive for total coliform/absent for E. coli. Three repeats were collected 2/11/15 (upstream, downstream, and original site). No wells were running at the time so no triggered raw water well samples were required to be collected. On Thursday 2/12/15 Tigard reported that all 3 repeats were absent for both total coliform and E. coli. Jennifer indicated that the cause of the original positive might have been due to low chlorine residual but she was not sure. Tigard notified Portland as required by the groudwater rule since they buy water from Portland and Portland has wells. ACTION NEEDED: No further action needed at this time. System can resume routine monitoring and is not in violation unless more than 5% of samples are positive for total coliform in February.
Associated Alerts: COLI13922 - 02/12/2015 - COLIFORM, TOTAL (TCR)

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DBPs :: TOC & Alkalinity :: DBP Sample Sites :: FANLs :: MRDL :: Turbidity :: SWTR :: RAA :: LRAA For SDWIS: 4076