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OHA Drinking Water Services
Contact Report Details |
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| PWS ID: | OR41 00493 | ||
| PWS Name: | LYONS MEHAMA WATER DISTRICT | ||
| Who Was Contacted: | KELLY NAMITZ | ||
| Contact Phone: | 503-859-2367 (Email address hidden) | ||
| Contact Date: | 07/03/2024 | ||
| Contacted By: | BAIRD, GREGG (DWP) | ||
| Contact Method/Location: | |||
| Assistance Type: | MONITORING | ||
| Reasons: | Cyanotoxins |
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| Details: | Total microcystins were detected at 0.77 ug/L in Lyon's routine every-two-week raw water sample collected Monday 7/1/24. As a result, monitoring of the raw water has been increased to weekly. An entry point (finished water) sample must be collected within 1 business day and entry point monitoring continue weekly going forward. Operator informed of schedule change this date and confirmed on Friday 7/5/24 that they will collect and freeze a sample Saturday 7/6/24 and ship the finished water sample Monday 7/8/24 along with the 7/8/24 raw & finished samples. Update 7/15/24: OHA recommended all downstream PWSs increase chlorine residuals and review optimization guidance due to elevated levels of raw water microcytins reported by Salem for sample collected Sunday 7/14/24 (14.332 ug/L). Spoke with John from Lyons 7/16/24 and he indicated he would increase residual to 1.6 ppm per OHA recommendation. Update 8/30/24: Lyons qualifies to stop finished water monitoring and change to weekly raw water monitoring only (weekly due to upstream Rec HABs advisory). Operator notified of monitoring schedule change this date. | ||