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OHA Drinking Water Services Contact Report Details
PWS ID:	OR41 00199
PWS Name:	BEAVER WATER DISTRICT

Who Was Contacted and Phone:	sdwis
Contact Date:	12/08/2015
Contacted By:	BAIRD, GREGG (REGION 1)
Contact Method/Location:	Office

Assistance Type:	WATER QUALITY ALERT RESPONSE
Reasons:	Disinfection Byproducts N/A

Details:	SUMMARY: Quarterly DBP results over the MCL DETAILS: The routine quarterly sample collected 11/9/15 showed disinfection byproducts (both TTHMs & HAA5s) over the MCL at sample site SM#2. Compliance is based on the locational running annual average (LRAA) of 4 consecutive quarterly samples being under the MCLs for both TTHMs and HAA5s, not individual quarterly results. LRAAs for both TTHMs & HAA5s are currently under the respective MCLs so system is compliance. Operational Evaluation Levels (OELs) are also below both the MCLs at this time. ACTION NEEDED: System needs to pursue methods of lowering DBPs in the distribution system. No regulatory action needed at this time, however if LRAAs exceed the MCL, the system will be in violation and public notice will be required. Also if OELs exceed the MCL, the system must conduct an operational evaluation that includes an examination of the water system and identifies steps they should consider to minimize future exceedances.

Associated Alerts:	CHEM6976 - 12/04/2015 - TOTAL HALOACETIC ACIDS (HAA5) , TTHM CHEM6976 - 12/04/2015 - TOTAL HALOACETIC ACIDS (HAA5) , TTHM