| 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 | ||||
5 secs | |||||||||||
| Expired Schedules | |||||||||
| Facility ID |
Analyte or Group | Sampling Interval |
Start | End | Samples Required |
Notes | |||
| CH-H COMMON HEADER FOR WTP-H | TOC & ALKALINITY | Monthly | 01/01/2002 | 03/31/2008 | 1 | Raw and filtered TOC and alkalinity | |||
| DIST-A DISTRIBUTION SYSTEM | HAA5 & TTHM | Quarterly | 01/01/2002 | 09/30/2013 | 1 | Schedule Reflects Monitoring Reduction Granted | |||
| EP-A EP FOR ELLIGSEN (STAFFORD) WELL | NITRATE | Yearly | 01/01/2002 | 05/21/2002 | 1 | ||||
| EP-A EP FOR ELLIGSEN (STAFFORD) WELL | VOLATILE ORGANICS | 3 Years | 01/01/2002 | 05/21/2002 | 1 | ||||
| EP-B EP FOR WEIDMAN WELL | NITRATE | Yearly | 01/01/2002 | 05/21/2002 | 1 | ||||
| EP-B EP FOR WEIDMAN WELL | VOLATILE ORGANICS | 3 Years | 01/01/2002 | 05/21/2002 | 1 | ||||
| EP-C EP FOR CHARBONNEAU WELLS | NITRATE | Yearly | 01/01/2002 | 05/21/2002 | 1 | ||||
| EP-C EP FOR CHARBONNEAU WELLS | VOLATILE ORGANICS | 3 Years | 01/01/2002 | 05/21/2002 | 1 | ||||
| EP-D EP FOR GESELLSHAFT WELL | NITRATE | Yearly | 01/01/2002 | 05/21/2002 | 1 | ||||
| EP-D EP FOR GESELLSHAFT WELL | VOLATILE ORGANICS | 3 Years | 01/01/2002 | 05/21/2002 | 1 | ||||
| EP-E EP FOR NIKE WELL | NITRATE | Yearly | 01/01/2002 | 05/21/2002 | 1 | ||||
| EP-E EP FOR NIKE WELL | VOLATILE ORGANICS | 3 Years | 01/01/2002 | 05/21/2002 | 1 | ||||
| EP-F EP FOR CANYON CREEK | NITRATE | Yearly | 01/01/2002 | 05/21/2002 | 1 | ||||
| EP-F EP FOR CANYON CREEK | VOLATILE ORGANICS | 3 Years | 01/01/2002 | 05/21/2002 | 1 | ||||
| EP-G EP FOR BOECKMAN WELL | NITRATE | Yearly | 01/01/2002 | 05/21/2002 | 1 | ||||
| EP-G EP FOR BOECKMAN WELL | VOLATILE ORGANICS | 3 Years | 01/01/2002 | 05/21/2002 | 1 | ||||
| EP-H EP FOR WILLAMETTE RIVER | ARSENIC | Yearly | 01/01/2002 | 01/01/2007 | 1 | ||||
| EP-H EP FOR WILLAMETTE RIVER | BROMATE | Monthly | 01/01/2002 | 06/30/2011 | 1 | Sample at the Entry Point | |||
| EP-H EP FOR WILLAMETTE RIVER | CYANOTOXINS | WK | 07/14/2024 | 08/16/2024 | 1 | ||||
| EP-H EP FOR WILLAMETTE RIVER | DI(2-ETHYLHEXYL) PHTHALATE | Quarterly | 07/01/2015 | 09/30/2016 | 1 | ||||
| EP-H EP FOR WILLAMETTE RIVER | RAD - GROSS ALPHA | 6 Years | 01/01/2008 | 12/31/2013 | 1 | ||||
| EP-H EP FOR WILLAMETTE RIVER | RAD - RADIUM 226/228 | 6 Years | 01/01/2008 | 12/31/2013 | 1 | ||||
| EP-H EP FOR WILLAMETTE RIVER | RAD - URANIUM | 6 Years | 01/01/2008 | 12/31/2013 | 1 | ||||
| EP-H EP FOR WILLAMETTE RIVER | SOC | 3 Years | 01/01/2002 | 12/31/2016 | 2 | 2 Consec. QT Samples | |||
| SRC-HA WILLAMETTE RIVER | CYANOTOXINS | 2 Weeks | 01/27/2019 | 07/08/2024 | 1 | ||||
| SRC-HA WILLAMETTE RIVER | CYANOTOXINS | 2 Weeks | 07/15/2018 | 01/24/2019 | 1 | ||||
| SRC-HA WILLAMETTE RIVER | CYANOTOXINS | WK | 07/14/2024 | 08/16/2024 | 1 | ||||