OHA Drinking Water Services
OHA Drinking Water Services
Contact Report Details

PWS ID: OR41 00862
Who Was Contacted and Phone: Frank Day (541) 923-1041
Contact Date: 03/01/2017
Contacted By: BYRD, MICHELLE P (DWP)
Contact Method/Location: Office
Reasons: Coliform
Details: SUMMARY: Level 2 Coliform Investigation DETAILS: A level 2 coliform investigation was conducted with a phone call to Frank. The source of total coliform positives on January 23rd and 25th are thought to be associated with a delay to put into service a new waterline installed on SW Mustang Road located in the southern portion of the distribution system above the cistern. The waterline was disinfected and sampled after installation. However, it was several weeks before it was put into service due to bad weather. No sampling was done before the waterline was put into service.

Additional sampling confirmed total coliform was isolated to the cistern and lower distribution area. Samples collected at the wells were coliform absent. Samples collected once water was rerouted around the new waterline were coliform absent.

The waterline was disinfected according to OAR 333-061-0050(10). Samples collected after disinfection and flushing were coliform absent before returning the waterline to service. Four routine samples collected February 14th were absent of coliform.

The water system has experienced four coliform investigations since July 2016. OAR 333-061-0032(6)(g) requires installation of disinfection for the purpose of maintaining a detectable residual in the distribution system when persistent total coliform triggers four or more coliform investigations within a two year period. The due date to install disinfection is March 29, 2017. The requirement to install secondary disinfection may be postponed if the water system can demonstrate no presence of coliform in the distribution system. ACTION NEEDED: A site visit will be scheduled this spring to inspect the new Well #5 and storage reservoir.

Associated Alerts: COLI16507 - 01/24/2017 - COLIFORM, TOTAL (TCR)

For further information on this public water system, click on the area of interest below:
System Info :: Report for Lenders :: Alerts :: Violations :: Compliance & Enforcement :: Contacts & Advisories :: Site Visits :: Public Notice
Coliform Summary :: Coliform Results :: Sampling Schedule for Coliform :: Groundwater/GWUDI Source Details :: Plan Review :: Annual Fee
Chemical Group Summary :: Latest Chemical Results :: Entry Point Detects :: Single Analyte Results 
Chemical Schedule Summary :: Chemical Schedule Details
Lead & Copper :: Corrosion Control (LCR) :: Nitrate :: Arsenic :: Radionuclides :: GWR 4-Log :: LT2 :: Cyanotoxins
DBPs :: TOC & Alkalinity :: DBP Sample Sites :: FANLs :: MRDL :: Turbidity :: SWTR :: RAA :: LRAA For SDWIS: 3454