OHA Drinking Water Services
OHA Drinking Water Services
Contact Report Details

PWS ID: OR41 00588
Who Was Contacted and Phone: Joe Pries (808) 345-4100
Contact Date: 04/23/2015
Contacted By: GOSS, BILL (DWP)
Contact Method/Location: Office
Reasons: Arsenic
Details: SUMMARY: Arsenic Alert Response DETAILS: Received alert for nitrate result of 0.0593 mg/l from sample collected 4/2/15. Spoke with Joe Pries. The regeneration timing of the ion exchange system has been reduced from every two weeks to every other day to improve the systems performance. Spoke with Scott Petterson with Lindsay EcoWater. The ion exchange media was shedding at the time of the 4/2/15 sample. Another arsenic sample collected on 4/8/15 tested at 0.00299 mg/l, so no acute arsenic public notice required. An MCL violation will be issued, so an arsenic MCL violation public notice will be required after the end of the second quarter. The treatment system is still having problems treating the nitrate to below the MCL, likely due to sulfate interference. A nitrate public notice was distributed on 4/8/15. ACTION NEEDED: System to continue sampling, make adjustments to the treatment system, provide public notice as required.
Associated Alerts: CHEM6693 - 04/21/2015 - ARSENIC

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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 
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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: 2360