Welcome to California
California Home
Welcome to California - images of Golden Gate Bridge, ocean sunset, waterfall, flowers, and city skyline California Home Welcome to the California Environmental Protection Agency
California Integrated Water Quality System Project (CIWQS)
   Party At-A-Glance Report

  
   [VIEW PRINTER FRIENDLY VERSION] [EXPORT THIS REPORT TO EXCEL]

  
  
  
  
  
General Information
Party ID Party Name Party Classification Mailing Address Work Phone Email/Website
643694 Barbara Nguyen 35600 Verdant View Drive The Sea Ranch, CA 95497 707-785-2411 bnguyen@tsra.org
  
  
  
  
Expand/Contract Related Places
Related Places
Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date
Total Related Places: 0
  
  
  
  
Expand/Contract Related Parties
Related Parties
Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification
41499 Sonoma County Water Agency (SCWA) Organization Data Submitter 02/07/2024 None County Agency
Total Related Parties: 1
  
  
  
  
Expand/Contract Regulatory Measures
Regulatory Measures (non-enforcement)
Reg. Measure ID Regulatory Measure Type Region WDID Status Program Order No. RM Effective Date RM Termination Date Relationship Relationship Start Date Relationship End Date Amended?
Total Regulatory Measures: 0
  
  
  
  
Expand/Contract Violations
Violations within the past five years
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.
Report currently showing last five years of violations. Click here to return to viewing one year of violations. Refer to the Interactive Violation Report for more data.
Total Violations: 0
*Click the "(+/-) Violation Description" link to expand and contract the violation description.
  
  
  
  
Expand/Contract Enforcement Actions
Enforcement Actions
Enforcement ID Enforcement Type Enf. Order No. Title Program Effective Date Status
Total Enforcement Actions: 0
  
  
  
  
Expand/Contract Enforcement Actions
Regulatory Measures linked to Related Parties
Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status
461037 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 05/29/2025 Active
460101 Sonoma County Water Agency (SCWA) Enrollee - 401 Certification CERFILLEXC 05/06/2025 Historical
459395 Sonoma County Water Agency (SCWA) NPDES Permit NPDMUNILRG 02/01/2025 Active
457952 Sonoma County Water Agency (SCWA) Enrollee - 401 Certification CERFILLEXC 10/01/2024 Active
456483 Sonoma County Water Agency (SCWA) Enrollee - Waiver CERFILLEXC 05/21/2024 Active
452960 Sonoma County Water Agency (SCWA) Enrollee - 401 Certification CERFILLEXC 06/23/2023 Active
452504 Sonoma County Water Agency (SCWA) Enrollee - WDR CERFILLEXC 05/18/2023 Historical
447308 Sonoma County Water Agency (SCWA) Enrollee - Waiver WDRMUNIENROTH 06/14/2022 Active
446863 Sonoma County Water Agency (SCWA) Enrollee - WDR CERFILLEXC 03/14/2022 Historical
441712 Sonoma County Water Agency (SCWA) WDR CERFILLEXC 12/10/2020 Active
440047 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 02/01/2021 Active
437645 Sonoma County Water Agency (SCWA) 401 Certification CERREST 07/14/2020 Active
437314 Sonoma County Water Agency (SCWA) Enrollee - 401 Certification CERFILLEXC 02/26/2020 Historical
437072 Sonoma County Water Agency (SCWA) Individual Monitoring Requirem REC 06/27/2019 Active
436540 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 05/12/2020 Active
435492 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC None Historical
433463 Sonoma County Water Agency (SCWA) WDR WDRMUNIOTH 06/20/2019 Active
432957 Sonoma County Water Agency (SCWA) NPDES Permit NPDMUNILRG 09/01/2019 Historical
427524 Sonoma County Water Agency (SCWA) NPDES Permit NPDMUNIOTH 08/01/2021 Active
423602 Sonoma County Water Agency (SCWA) WDR WDRMUNILRG 07/01/2019 Active
420178 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 06/07/2018 Active
419472 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 09/18/2018 Historical
416678 Sonoma County Water Agency (SCWA) Enrollee - NPDES NPDNONMUNIPRCS 07/01/2016 Active
414345 Sonoma County Water Agency (SCWA) Enrollee - 401 Certification CERFILLEXC 12/28/2017 Historical
412229 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 05/17/2017 Historical
407112 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 10/27/2017 Active
407111 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 10/27/2017 Active
404763 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 05/09/2016 Active
402980 Sonoma County Water Agency (SCWA) Enrollee - WDR REC 06/27/2019 Active
396675 Sonoma County Water Agency (SCWA) Enrollee NPDNONMUNIPRCS 01/31/2014 Historical
396238 Sonoma County Water Agency (SCWA) NPDES Permit NPDMUNILRG 07/01/2014 Historical
392736 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 07/10/2014 Active
392445 Sonoma County Water Agency (SCWA) Enrollee - 401 Certification CERFILLEXC 04/16/2010 Historical
392348 Sonoma County Water Agency (SCWA) Enrollee - 401 Certification CERFILLEXC 07/22/2010 Historical
392149 Sonoma County Water Agency (SCWA) NPDES Permit NPDMUNIOTH 05/01/2014 Historical
389154 Sonoma County Water Agency (SCWA) Co-Permitee NPDMUNILRG 01/01/2013 Active
387488 Sonoma County Water Agency (SCWA) NPDES Permit NPDMUNIOTH 02/01/2013 Historical
384002 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 06/20/2012 Historical
382828 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 05/10/2012 Historical
379068 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 08/03/2011 Historical
378829 Sonoma County Water Agency (SCWA) Co-Permitee NPDMUNILRG 04/01/2011 Historical
378528 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 06/01/2009 Historical
378147 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 09/22/2009 Historical
377936 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 10/30/2009 Historical
377661 Sonoma County Water Agency (SCWA) Letter WDR 02/17/2011 Historical
376807 Sonoma County Water Agency (SCWA) 401 Certification CERREST 05/14/2014 Active
375586 Sonoma County Water Agency (SCWA) Enrollee NPDNONMUNIPRCS 05/04/2006 Historical
375188 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 10/12/2010 Historical
369878 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 07/23/2009 Active
363151 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 04/13/2009 Historical
362635 Sonoma County Water Agency (SCWA) WDR CERFILLEXC 07/23/2009 Historical
360533 Sonoma County Water Agency (SCWA) Co-Permitee NPDMUNILRG 03/01/2008 Historical
349137 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 06/21/2008 Historical
349119 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 10/03/2005 Historical
349042 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 04/17/2006 Historical
348545 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 07/19/2006 Historical
348542 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 10/19/2006 Historical
348454 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC None Historical
348451 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 11/14/2006 Historical
348450 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 08/08/2006 Historical
347780 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 08/09/2008 Historical
347764 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 09/02/2008 Historical
347638 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 09/03/2008 Historical
347600 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 08/27/2008 Historical
341547 Sonoma County Water Agency (SCWA) NPDES Permit NPDMUNILRG 12/01/2008 Historical
331310 Sonoma County Water Agency (SCWA) NPDES Permit NPDMUNIOTH 03/20/2009 Historical
324858 Sonoma County Water Agency (SCWA) Enrollee NPDNONMUNIPRCS 06/19/2007 Historical
300361 Sonoma County Water Agency (SCWA) Enrollee SSOMUNILRG 10/16/2006 Active
300360 Sonoma County Water Agency (SCWA) Enrollee SSOMUNISML 10/16/2006 Active
300283 Sonoma County Water Agency (SCWA) Enrollee - WDR SSOMUNISML 10/16/2006 Active
300279 Sonoma County Water Agency (SCWA) Enrollee - WDR SSOMUNISML 10/16/2006 Active
300117 Sonoma County Water Agency (SCWA) Enrollee - WDR SSOMUNISML 10/16/2006 Active
300111 Sonoma County Water Agency (SCWA) Enrollee - WDR SSOMUNISML 10/16/2006 Active
300108 Sonoma County Water Agency (SCWA) Enrollee - WDR SSOMUNISML 10/16/2006 Active
300103 Sonoma County Water Agency (SCWA) Enrollee - WDR SSOMUNISML 10/16/2006 Active
261405 Sonoma County Water Agency (SCWA) Enrollee NPDNONMUNIPRCS 12/04/2003 Historical
261257 Sonoma County Water Agency (SCWA) Letter NPDESWW 10/15/1998 Historical
261255 Sonoma County Water Agency (SCWA) Letter NPDESWW 10/15/1998 Historical
261189 Sonoma County Water Agency (SCWA) Letter NPDESWW 09/27/2004 Historical
261172 Sonoma County Water Agency (SCWA) Letter NPDESWW 07/15/2004 Historical
261160 Sonoma County Water Agency (SCWA) Letter NPDESWW 05/05/2004 Historical
261137 Sonoma County Water Agency (SCWA) Letter NPDESWW 02/03/2004 Historical
261120 Sonoma County Water Agency (SCWA) Letter NPDESWW 12/29/2003 Historical
261093 Sonoma County Water Agency (SCWA) Letter WDR 11/21/2003 Historical
261055 Sonoma County Water Agency (SCWA) Letter WDR 08/06/2003 Historical
261038 Sonoma County Water Agency (SCWA) Letter WDR 05/14/2003 Historical
261023 Sonoma County Water Agency (SCWA) Letter WDR 04/23/2003 Historical
261010 Sonoma County Water Agency (SCWA) Letter WDR 03/17/2003 Historical
260639 Sonoma County Water Agency (SCWA) Letter NPDESWW 04/27/2001 Historical
260638 Sonoma County Water Agency (SCWA) Letter NPDESWW 04/27/2001 Historical
260637 Sonoma County Water Agency (SCWA) Letter NPDESWW 04/27/2001 Historical
179231 Sonoma County Water Agency (SCWA) Enrollee NPDNONMUNIPRCS 05/24/2004 Historical
179217 Sonoma County Water Agency (SCWA) Enrollee NPDNONMUNIPRCS 12/04/2003 Historical
179210 Sonoma County Water Agency (SCWA) Enrollee NPDNONMUNIPRCS 04/01/2003 Historical
179202 Sonoma County Water Agency (SCWA) Co-Permitee MNSTW1 10/01/2009 Historical
176692 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 06/30/2006 Historical
176653 Sonoma County Water Agency (SCWA) Enrollee - NPDES NPDNONMUNIPRCS 01/31/2014 Historical
172753 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 05/06/2004 Historical
172238 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 04/25/2003 Historical
170324 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 07/03/2002 Historical
169935 Sonoma County Water Agency (SCWA) 401 Certification CERFILLEXC 07/26/2002 Historical
148564 Sonoma County Water Agency (SCWA) WDR WDRMUNILRG 06/28/2001 Historical
147680 Sonoma County Water Agency (SCWA) WDR WDR 05/25/2000 Historical
147408 Sonoma County Water Agency (SCWA) NPDES Permit NPDMUNILRG 10/21/1998 Historical
145535 Sonoma County Water Agency (SCWA) NPDES Permit NPDMUNILRG 07/15/1981 Historical
142324 Sonoma County Water Agency (SCWA) NPDES Permit NPDMUNILRG 06/17/1992 Historical
141015 Sonoma County Water Agency (SCWA) Reclamation Requirements REC 04/15/1987 Historical
140965 Sonoma County Water Agency (SCWA) NPDES Permit NPDMUNILRG 11/19/1986 Historical
139182 Sonoma County Water Agency (SCWA) WDR WDRMUNIOTH 08/27/1997 Historical
139063 Sonoma County Water Agency (SCWA) NPDES Permit NPDMUNIOTH 10/27/1994 Historical
138699 Sonoma County Water Agency (SCWA) WDR WDRMUNIOTH 03/28/1996 Active
138622 Sonoma County Water Agency (SCWA) WDR WDRMUNILRG 05/23/1990 Historical
138314 Sonoma County Water Agency (SCWA) WDR WDRMUNILRG 01/27/1994 Historical
138081 Sonoma County Water Agency (SCWA) NPDES Permit NPDMUNIOTH 08/24/1995 Historical
137968 Sonoma County Water Agency (SCWA) NPDES Permit NPDMUNIOTH 05/27/1993 Historical
137954 Sonoma County Water Agency (SCWA) WDR WDR 12/10/1992 Historical
137887 Sonoma County Water Agency (SCWA) NPDES Permit NPDMUNIOTH 07/27/1989 Historical
137773 Sonoma County Water Agency (SCWA) NPDES Permit NPDMUNIOTH 05/28/1992 Historical
137719 Sonoma County Water Agency (SCWA) WDR WDRMUNIOTH 08/22/1991 Historical
137718 Sonoma County Water Agency (SCWA) WDR WDR 08/22/1991 Historical
137639 Sonoma County Water Agency (SCWA) NPDES Permit NPDMUNIOTH 04/28/1988 Historical
137523 Sonoma County Water Agency (SCWA) WDR WDRMUNILRG 11/25/1984 Historical
137505 Sonoma County Water Agency (SCWA) NPDES Permit NPDMUNIOTH 05/31/1984 Historical
137394 Sonoma County Water Agency (SCWA) WDR WDRMUNIOTH 01/25/1979 Historical
137174 Sonoma County Water Agency (SCWA) NPDES Permit NPDMUNIOTH 05/28/1987 Historical
137116 Sonoma County Water Agency (SCWA) WDR WDRMUNIOTH 06/27/1986 Historical
137115 Sonoma County Water Agency (SCWA) WDR WDRMUNILRG 06/27/1986 Historical
137114 Sonoma County Water Agency (SCWA) WDR WDRMUNIOTH 05/07/1986 Historical
136980 Sonoma County Water Agency (SCWA) NPDES Permit NPDMUNIOTH 02/24/1983 Historical
136708 Sonoma County Water Agency (SCWA) NPDES Permit NPDMUNIOTH 04/22/1982 Historical
136684 Sonoma County Water Agency (SCWA) WDR CERFILLEXC 08/27/1981 Historical
132342 Sonoma County Water Agency (SCWA) NPDES Permit NPDMUNIOTH 12/25/2003 Historical
132071 Sonoma County Water Agency (SCWA) WDR WDR 03/27/2003 Historical
131927 Sonoma County Water Agency (SCWA) NPDES Permit NPDMUNILRG 03/20/2002 Historical
Total Regulatory Measures linked to Related Parties: 134
  
  
The current report was generated with data as of: 10/31/2025
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
Back to Main Page  |  Back to Top of Page

Conditions of Use | Privacy Policy
Copyright © 2024 State of California

The Board is one of six boards, departments, and offices under
the umbrella of the California Environmental Protection Agency.
Cal/EPA | ARB | DPR | DTSC | OEHHA | SWRCB