OHA Drinking Water Services
OHA Drinking Water Services
Contact Report Details

PWS ID: OR41 00585
PWS Name: OCEANSIDE WATER DISTRICT
 
Who Was Contacted: Christian Anderson
Contact Phone: (Email address hidden)
Contact Date: 01/08/2025
Contacted By: ALFAFARA, NICOLE (DWP)
Contact Method/Location: Email
 
Assistance Type: WATER QUALITY ALERT RESPONSE
Reasons: Disinfection Byproducts
 
Details: DWS staff got an alert for the system's DBP results, which indicate a 4th quarter TTHM concentration exceeding the MCL at 0.0865 mg/L. When incorporating these results into the LRAA and OEL calculations, both metrics also exceed the MCL, at 0.088 mg/L and 0.094 mg/L, respectively.
The system had previously notified DWS that it recently drained a reservoir in an effort to reduce DBP levels and is actively seeking additional guidance from a Circuit Rider to address the issue. DWS staff advised the system to submit a detailed plan within 90 days outlining specific steps to reduce TTHM levels below the MCL and informed system a public notice must be issued within 30 days
 
Associated Alerts: DBP-130 - 01/07/2025 - TTHM