OHA Drinking Water Services
OHA Drinking Water Services
Contact Report Details
PWS ID: OR41 00091
PWS Name: AVION WC - GREATER AVION
 
Who Was Contacted: Gene Hubbard
Contact Phone: (Email address hidden)
Contact Date: 10/02/2023
Contacted By: WIKSTROM, CHANTAL (DWP)
Contact Method/Location: Email
 
Assistance Type: MONITORING
Reasons: Lead or Copper
 
Details: The Greater Avion water system triggered into completing two 6-month rounds of lead and copper sampling at the standard number of sites in August 2023 when the new Dyer Well 2 was approved.

To demonstrate that adding this new well would have minimal impact on corrosivity of drinking water, water quality parameters were collected from new well on 7/31/2023. The data summary was received via email on August 30, 2023 and compares the new dyer well 2 data with previous sampling events in 2020 from existing nearby wells.

It was determined by DWS engineer that the system may forgo the 2, 6-month rounds of lead and copper monitoring that was triggered by the new well source as the system will be conducting their regular (3 year) lead and copper monitoring at 30 sampling sites between June 1 and Sept 30th. Once the results from the regular lead and copper monitoring are submitted, DWS will look for variations in the results.

1/3/2024 update: Dyer Well 2 (SRC-JB) had a lead detection 0.036 mg/L over the AL on 5/16/23 before plan review approval. This well is combined with Dyer Well 1 at EP-J and the confirmation sample that was taken at Dyer Well 2, result was 0.0011 mg/L - less than the action level. It was determined by DWS that this lead result over the AL at Dyer Well 2 is not representative of the distribution system sample taps and that the system does not need the 2, 6-month rounds of lead and copper sampling in the distribution system. Additionally, DWS geologist determined that Dyer Well 2 is constructed into the same aquifer that supplies water to Dyer Well #1.Lead and copper sampling will continue with the 3-year sampling schedule, next due in 2024. After results come in we can determine if the sampling schedule needs to change.

More information for this water system: SDWIS ID 3693
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