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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 93701 | ||
| PWS Name: | STAFFORD ELEMENTARY | ||
| Who Was Contacted: | Steve Matthias | ||
| Contact Phone: | 503-673-7975 (Email address hidden) | ||
| Contact Date: | 10/01/2019 | ||
| Contacted By: | FERGUSON, JOEL (CLACKAMAS COUNTY) | ||
| Contact Method/Location: | Phone | ||
| Assistance Type: | WATER QUALITY ALERT RESPONSE | ||
| Reasons: | Disinfection Byproducts |
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| Details: | The operator contacted me about the high TTHM sample result. I let him know that a MCL for TTHM is determined by a running annual average rather than from a single sample. He asked if they could stop chlorinating to resolve the disinfection by-products. The system has an approved UV system. I consulted with OHA & the chlorination had not been required back in 2008. The system can stop chlorinating & the DBP sampling schedule can end. The DBP schedule will end 12/31/19. I will the operator know to take a 4th quarter sample to verify the absence of DBP's. | ||
| Associated Alerts: | CHEM8535 - 09/27/2019 - TTHM |
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