| Chemical Sampling Schedule Status | |||||||||||
| Facility ID |
Analyte or Group | Sampling Interval |
Monitoring Period | Days Until End |
Samples Required |
Samples Received |
Last Sample Date |
||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Start | End | ||||||||||
| CH-H COMMON HEADER FOR WTP-H | TOC & ALKALINITY | notes | Quarterly | 04/01/2026 - 06/30/2026 | 56 | 1 | incomplete | 01/06/2026 | |||
| DIST-A DISTRIBUTION SYSTEM | LEAD & COPPER | notes | 3 Years | 01/01/2027 - 12/31/2027 | 30 | 07/30/2024 | |||||
| Seasonal sampling period: 06/01 thru 09/30 | |||||||||||
| DIST-A DISTRIBUTION SYSTEM | STAGE 2 DBP | notes | Quarterly | 04/01/2026 - 06/30/2026 | 56 | 4 | incomplete | 02/25/2026 | |||
| EP-H EP FOR WILLAMETTE RIVER | BROMATE | notes | Quarterly | 04/01/2026 - 06/30/2026 | 56 | 1 | incomplete | 01/05/2026 | |||
| EP-H EP FOR WILLAMETTE RIVER | ARSENIC | notes | 9 Years | 01/01/2026 - 12/31/2034 | 3,162 | 1 | incomplete | 01/11/2023 | |||
| EP-H EP FOR WILLAMETTE RIVER | IOC | notes | 9 Years | 01/01/2020 - 12/31/2028 | 971 | 1 | done | 01/11/2023 | |||
| EP-H EP FOR WILLAMETTE RIVER | NITRATE | Yearly | 01/01/2026 - 12/31/2026 | 240 | 1 | incomplete | 01/27/2025 | ||||
| EP-H EP FOR WILLAMETTE RIVER | NITRITE | notes | 9 Years | 01/01/2020 - 12/31/2028 | 971 | 1 | done | 01/27/2025 | |||
| EP-H EP FOR WILLAMETTE RIVER | PFAS | notes | Quarterly | 04/01/2026 - 06/30/2026 | 56 | 1 | incomplete | ||||
| Initial monitoring - 4 quarters only | |||||||||||
| EP-H EP FOR WILLAMETTE RIVER | RAD - GROSS ALPHA | 9 Years | 01/01/2023 - 12/31/2031 | 2,066 | 1 | incomplete | 04/25/2022 | ||||
| EP-H EP FOR WILLAMETTE RIVER | RAD - RADIUM 226/228 | 9 Years | 01/01/2023 - 12/31/2031 | 2,066 | 1 | incomplete | 04/25/2022 | ||||
| EP-H EP FOR WILLAMETTE RIVER | RAD - URANIUM | 9 Years | 01/01/2023 - 12/31/2031 | 2,066 | 1 | incomplete | 04/25/2022 | ||||
| EP-H EP FOR WILLAMETTE RIVER | SOC | notes | 3 Years | 01/01/2026 - 12/31/2028 | 971 | 1 | done | 02/11/2026 | |||
| EP-H EP FOR WILLAMETTE RIVER | VOLATILE ORGANICS | Yearly | 01/01/2026 - 12/31/2026 | 240 | 1 | done | 02/11/2026 | ||||
| SRC-HA WILLAMETTE RIVER | CYANOTOXINS | 2 Weeks | 05/03/2026 - 05/16/2026 | 11 | 1 | incomplete | |||||
| Seasonal sampling period: 05/01 thru 10/31 | |||||||||||
| WTP-H TP FOR WILLAMETTE RIVER | TOTAL ORGANIC CARBON | Quarterly | 04/01/2026 - 06/30/2026 | 56 | 1 | incomplete | 01/06/2026 | ||||
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