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| Introduction :: Data Search Options :: Water System Search :: DWS Home :: DWS Rules |
OHA Drinking Water Services
Contact Report Details |
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| PWS ID: | OR41 00882 | ||
| PWS Name: | OCEANSIDE WD - CAPE MEARES | ||
| Who Was Contacted: | Christian Anderson | ||
| Contact Phone: | 503-842-6462 (Email address hidden) | ||
| Contact Date: | 11/21/2023 | ||
| Contacted By: | HOFELD, EVAN (DWP) | ||
| Contact Method/Location: | |||
| Assistance Type: | WATER QUALITY ALERT RESPONSE | ||
| Reasons: | Disinfection Byproducts |
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| Details: | On 11/20/23 I received an alert for a TTHM result of 0.1272 mg/l from sampling completed 11/14/23 resulting in an OEL level of 0.093 mg/l and requiring an OEL report (no LRAA MCL was exceeded). I e-mailed Christian Anderson about the exceedance, the need to complete an OEL report, and included a link to information about OELs and the OEL report template we have on our website (the system had also exceeded the TTHM OEL in 3rd quarter 2022. Although the individual HAA5 result was 0.0824 mg/l (also sampled 11/14/23), this did not result in an exceedance of the HAA5 OEL or LRAA MCL. Update: Update: The OEL report received on January 31, 2024, highlighted elevated levels of soluble organics and improper PASS-C dosage may have attributed to the OEL exceedance. To address these concerns, the system intends to increase coagulant dose based on lower UVA258 and suspended solids readings. |
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| Associated Alerts: | DBP-46 - 11/20/2023 - TOTAL HALOACETIC ACIDS (HAA5) DBP-47 - 11/20/2023 - TTHM |
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