General Information Party ID Party Name Party Classification Mailing Address Work Phone Email/Website 26240 San Luis Obispo CSA #9 Los Osos WTP County Agency 1055 Monterey Street 207 San Luis Obispo, CA 93408 null null Related Places Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date 822816 Los Osos Water Recycling Facility San Luis Obispo 3 Wastewater Treatment Facility Owner 10/22/1996 null Related Parties Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification 572167 Rosalyn Piza Person Data Submitter 01/11/2018 09/01/2022 null 551362 Misty Pontes Person Legally Responsible Official 03/30/2016 null null 551333 Charles Christian Person Legally Responsible Official 10/11/2016 null null 389345 Faith Zenker Person Legally Responsible Official 04/26/2016 null null 389145 Kenneth Pang Person Legally Responsible Official 03/30/2016 null null Regulatory Measures(non-enforcement) Reg. Measure ID Regulatory Measure Type Region WDID Title Status Program Order No. RM Effective Date RM Termination Date Relationship Relationship Start Date Relationship End Date 440285 Co-Permitee SB 3 400910371 13627 Order Co-Permitee under 2020-0015-DWQ for San Luis Obispo CSA #9 Los Osos WTP Active SLIC 2020-0015-DWQ 07/09/2020 null Discharger 09/18/2020 null 384782 13267 Letter (Non-Enforcement) 3 3 400910371 13267 Order 04/27/2012 for LOS OSOS WTP for Baseline GW Monitoring Historical WDR null 07/01/2012 08/08/2022 Discharger 04/27/2012 null 395289 Enrollee 3 null Enrollee under Waiver for Specific Disch Types for Los Osos WRF Const Dewatering Historical WDRNONMUNIPRCS R3-2014-0041 05/20/2013 09/20/2019 Discharger 03/10/2014 null 379559 WDR 3 3 400910371 WDR R3-2011-0001 for Los Osos Water Recycling Facility Active WDRMUNILRG R3-2011-0001 05/05/2011 null Discharger 02/07/2003 null 131791 Resolution 3 3 401078001 RESOLUTION ADOPTING FINDINGS MITIGATION AND MITIGATION MONITORING REPORT Historical WDRMUNIOTH 03-006 02/07/2003 02/07/2003 Discharger 02/07/2003 null 131790 WDR 3 3 401078001 WDR R3-2003-0007 for LOS OSOS WTP Historical WDRMUNIOTH R3-2003-0007 02/07/2003 07/14/2011 Discharger 02/07/2003 null Violations within the past calendar year Violation ID Occurrence Date Violation Type Violation Description Violation Status Priority Source Facility Name Violated Reg. Meas. ID Violated Reg. Meas. Order No. Linked To Enf. 1146353 04/07/2025 Surface Water Composite BOD exceeded 17 ppm on 4/7/2025. Violation null eSMR Los Osos Water Recycling Facility 379559 R3-2011-0001 N 1144753 12/01/2024 Order Conditions During the month of December LOWRF was experiencing low online UVT%. On seven different days were saw numbers below 55%. We noticed that our grab samples were greater then 2% from our online analyzer. Once we adjusted the online probe to match our bench top grab the UVT% seem to be holding about 55%. However, water was still being delivered to users downstream. Online UVT% Below 55%- 12/1/2024- 53.8% 12/8/2024- 51.9% 12/15/2024- 53.3% 12/2/2024- 54.3% (grab 59.3%) 12/9/2024- 53.9 (grab 56.1%) 12/16/2024- 53.8% 12/3/2024-54.8 % From 12/15/2024- 12/19/2024 water deliveries were stopped to downstream users. However, from 12/1-12/9/2024 water was being delivered and grab samples were above 55% on the 12/2,12/9 and 12/16/2024. The probe was adjusted on 12/9/2024. We are still waiting for conformation from the State of our minimum UVT% requirement for the plant. On December 9th, we had a 10,000 gallons Recycle Water Effluent spill on Los Osos Valley rd and South Bay blvd. Spilled Recycle Water Effluent went into two different storm drains. We confirmed with our Storm water coordinator that the storm drains did not lead into a body of water. The water was followed to a storm water retention pond to evaporate/percolate. Violation null Report Los Osos Water Recycling Facility 379559 R3-2011-0001 N 1146350 05/28/2025 OEV Turbidity 1-Hour Average (Mean) limit is 2 NTU and reported value was 02.27 NTU at EFF-001. Violation null eSMR Los Osos Water Recycling Facility 379559 R3-2011-0001 N 1144782 12/01/2024 CAT1 UV Transmittance Daily Minimum limit is 55.0 % and reported value was 53.8 % at EFF-001. Violation null eSMR Los Osos Water Recycling Facility 379559 R3-2011-0001 N 1144785 12/08/2024 CAT1 UV Transmittance Daily Minimum limit is 55.0 % and reported value was 51.9 % at EFF-001. Violation null eSMR Los Osos Water Recycling Facility 379559 R3-2011-0001 N 1144784 12/03/2024 CAT1 UV Transmittance Daily Minimum limit is 55.0 % and reported value was 51.9 % at EFF-001. Violation null eSMR Los Osos Water Recycling Facility 379559 R3-2011-0001 N 1144783 12/02/2024 CAT1 UV Transmittance Daily Minimum limit is 55.0 % and reported value was 54.8 % at EFF-001. Violation null eSMR Los Osos Water Recycling Facility 379559 R3-2011-0001 N 1144786 12/09/2024 CAT1 UV Transmittance Daily Minimum limit is 55.0 % and reported value was 53.9 % at EFF-001. Violation null eSMR Los Osos Water Recycling Facility 379559 R3-2011-0001 N Enforcement Actions Enforcement ID Enforcement Type Enf. Order No. Title Program Effective Date Status 299193 13267 Letter null 13267 letter for Los Osos WTP WDRMUNIOTH 10/04/2005 Historical 299194 Notice of Violation null NOV for Los Osos WTP WDR 01/11/2006 Historical 297103 Admin Civil Liability R3-2005-0137 ACL R3-2005-0137 for LOS OSOS WTP WDR 01/05/2006 Active 300828 13267 Letter 03-0007 13267 for Los Osos CSD WDRMUNIOTH 02/07/2003 Historical Regulatory Measures linked to Related Parties Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status