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   Party At-A-Glance Report

  
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General Information
Party ID Party Name Party Classification Mailing Address Work Phone Email/Website
27814 Mariposa PUD Special District Po Box 494 Mariposa, CA 95338 209-966-2515 mpud@sti.net
  
  
  
  
Expand/Contract Related Places
Related Places
Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date
631538 Mariposa PUD CS Mariposa 5F Collection_System Owner 04/05/2006 None
273207 Mariposa WWTP Mariposa 5F Wastewater Treatment Facility Owner 04/22/1999 None
Total Related Places: 2
  
  
  
  
Expand/Contract Related Parties
Related Parties
Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification
625763 Justin Sherrill` Person Data Submitter 06/24/2021 None None
607444 Susan Wages Person Legally Responsible Official 04/08/2020 None None
578844 Edwin Appling Person Legally Responsible Official 06/22/2018 01/12/2023 None
520904 Chris Toledo Person Legally Responsible Official 10/03/2016 None None
520904 Chris Toledo Person Data Submitter 01/27/2010 10/03/2016 None
520903 Benjamin Bissmeyer Person Data Submitter 01/27/2010 None None
500462 Curt Farrell Person Employee 02/25/2009 None None
117198 Mark Rowney Person Legally Responsible Official 04/05/2006 01/12/2023 None
117198 Mark Rowney Person Legal representative 04/22/1999 01/12/2023 None
117198 Mark Rowney Person Enforcement Contact 06/04/2002 01/12/2023 None
117198 Mark Rowney Person Facility Contact 04/22/1999 01/12/2023 None
Total Related Parties: 11
  
  
  
  
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?
441902 Enrollee - NPDES 5F 5C221012001 Active NPDMUNIOTH R5-2023-0025 04/01/2021 None Discharger 01/14/2021 None N
385864 NPDES Permit 5F 5C221012001 Historical NPDMUNIOTH R5-2014-0042 05/01/2014 04/22/2021 Discharger 06/16/2000 None Y
377214 Letter 5F 5C221012001 Historical NPDESWW None 01/20/2011 07/31/2014 Discharger 06/16/2000 None N
343180 NPDES Permit 5F 5C221012001 Historical NPDMUNIOTH R5-2007-0171 01/25/2008 05/01/2014 Discharger 06/16/2000 None Y
300924 Enrollee - WDR 5F 5SSO10744 Active SSOMUNISML 2022-0103-DWQ 11/03/2006 None Discharger 04/14/2006 None N
147829 NPDES Permit 5F 5C221012001 Historical NPDMUNIOTH 00-122 06/16/2000 01/24/2008 Discharger 01/01/2000 None N
145003 NPDES Permit 5F 5C221012001 Historical NPDMUNIOTH 94-294 10/28/1994 06/15/2000 Discharger 10/28/1994 None N
144115 NPDES Permit 5F 5C221012001 Historical NPDMUNIOTH 84-142 11/28/1984 10/27/1989 Discharger 11/28/1984 None N
144098 NPDES Permit 5F 5C221012001 Historical NPDMUNIOTH 89-194 10/27/1989 10/28/1994 Discharger 10/27/1989 None N
Total Regulatory Measures: 9
  
  
  
  
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.
1152649 01/04/2026 Unauthorized Discharge January 2026: Unauthorized discharge prior to compliance with CWC section 13260. Violation of CWC section 13264. Violation None Report Mariposa WWTP 441902 R5-2023-0025 Y
1152648 01/04/2026 Other Codes January 2026: Failure to file a report of waste discharge. Violation of CWC section 13260. Violation None Report Mariposa WWTP 441902 R5-2023-0025 N
1152647 01/04/2026 Unauthorized Discharge Unauthorized discharge of partially treated waste to a water of the United States from 4 January to 5 January 2026. Violation of CWC section 13376 and CWA section 301. Violation None Report Mariposa WWTP 441902 R5-2023-0025 N
1152645 01/04/2026 Order Conditions Unauthorized bypass of partially treated waste to a surface water from 4 January to 5 January 2026. Violation of Municipal General Order, Attachment D sections I.G.3.a and I.G.3.b. Violation None Report Mariposa WWTP 441902 R5-2023-0025 N
1151615 01/04/2026 Surface Water See attached file Violation N eSMR Mariposa WWTP 441902 R5-2023-0025 N
1145339 02/13/2025 Surface Water See attached files. Violation N eSMR Mariposa WWTP 441902 R5-2023-0025 N
1143424 02/13/2025 Unauthorized Discharge Unauthorized discharge prior to compliance with CWC section 13260. Violation of CWC section 13264. Violation None Inspection Mariposa WWTP 441902 R5-2023-0025 N
1143421 02/13/2025 Other Codes Failure to file a report of waste discharge. Violation of CWC section 13260. Violation None Inspection Mariposa WWTP 441902 R5-2023-0025 N
1143419 02/13/2025 Unauthorized Discharge Unauthorized discharge of partially treated waste to a water of the United States from 02/13/2025 to 02/14/2025 and 03/18/2025. Discharging without filing a report of waste discharge. Violation of CWC section 13376 and CWA section 301. Violation None Inspection Mariposa WWTP 441902 R5-2023-0025 N
1143415 02/13/2025 Order Conditions Unauthorized bypass of partially treated waste to a surface water from 02/13/2025 to 02/14/2025 and 03/18/2025. Violation of Order sections I.G.3.a - b per Attachment D. Violation None Inspection Mariposa WWTP 441902 R5-2023-0025 Y
1141880 03/20/2025 Sanitary Sewer Overflow/Spill/ Type: Category 1 Spill; Debris-wipes/Non-disposables,Debris from Lateral caused 800 gallons of sewage to spill from Lateral Clean Out (Private) at Monarch Motel, 5059 State Highway 140 to Drainage Conveyance System,Paved Surface,Unpaved Surface Violation None SSO Mariposa PUD CS 300924 2022-0103-DWQ N
1140978 02/05/2025 Other Codes Failure to file a report of waste discharge. Violation of CWC section 13260. Violation None Inspection Mariposa PUD Water Treatment Plant 455676 None N
1140977 02/05/2025 Unauthorized Discharge Unauthorized discharge to land prior to complying with CWC 13260. Violation None Inspection Mariposa PUD Water Treatment Plant 455676 None Y
1139216 11/18/2023 Other Codes Violation identified on 11/18 and 11/20/2023 for failure to file a report of waste discharge. Violation of CWC Section 13260. Violation None Inspection Mariposa PUD Water Treatment Plant 455676 None N
1139215 11/18/2023 Other Codes Violation identified on 11/18 and 11/20/2023 for unauthorized discharge prior to compliance with CWC section 13260. Violation of CWC Section 13264. Violation None Inspection Mariposa PUD Water Treatment Plant 455676 None N
1139214 11/18/2023 Other Codes Violation identified on 11/18 and 11/20/2023 for unauthorized discharge to water of the United States. CWC Section 13376, CWA sections 301 and 401. Violation None Inspection Mariposa PUD Water Treatment Plant 455676 None Y
1131765 09/06/2024 Sanitary Sewer Overflow/Spill/ Type: Category 1 Spill; Damage by Others Not Related to Collection System Construction/Maintenance caused 3300 gallons of sewage to spill from Manhole at State Hwy 140 and 4th Street to Drainage Conveyance System that discharges to surface water Violation None SSO Mariposa PUD CS 300924 2022-0103-DWQ N
1118422 12/31/2021 OEV Flow Maximum Daily (MDEL) limit is 0.61 MGD and reported value was 0.80 MGD. Violation None Report Mariposa WWTP 385864 R5-2014-0042 N
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: 18
*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
464535 Notice of Violation None NOV 02/24/2026 for Mariposa PUD NPDMUNIOTH 02/24/2026 Active
461162 Notice of Violation None NOV 05/27/2025 for Mariposa PUD NPDMUNIOTH 05/27/2025 Active
460385 Staff Enforcement Letter None SEL 03/11/2025 for Mariposa PUD DISCHSW 03/11/2025 Historical
459841 Notice of Violation None NOV 01/28/2025 for Mariposa PUD DISCHSW 01/28/2025 Historical
452629 Notice of Violation None NOV 05/16/2023 for Mariposa PUD NPDMUNIOTH 05/16/2023 Active
416806 Time Schedule Order R5-2017-0105 TSO R5-2017-0105 for Mariposa PUD NPDMUNIOTH 10/20/2017 Historical
405821 Notice of Violation None NOV 04/15/2016 for Mariposa PUD NPDMUNIOTH 04/15/2016 Historical
395540 Time Schedule Order R5-2014-0043 TSO R5-2014-0043 for MARIPOSA PUD NPDMUNIOTH 05/17/2014 Historical
393249 Notice of Violation None NOV 09/19/2013 for MARIPOSA PUD NPDMUNIOTH 09/18/2013 Historical
388028 Notice of Violation None NOV 10-APR-12 for MARIPOSA PUD SSOMUNISML 04/10/2012 Historical
387497 Admin Civil Liability R5-2013-0590 ACL R5-2013-0590 for MARIPOSA PUD NPDMUNIOTH 12/30/2013 Historical
387049 Notice of Violation None NOV 08/20/2012 for Mariposa PUD, Mariposa PUD CS SSOMUNISML 08/20/2012 Historical
382433 Notice of Violation None NOV 12/16/2011 for Mariposa PUD, Mariposa PUD CS SSOMUNISML 12/16/2011 Historical
380274 Time Schedule Order R5-2011-0905 TSO R5-2011-0905 for MARIPOSA PUD NPDMUNIOTH 07/13/2011 Historical
378439 Notice of Violation None NOV 4/18/2011 for MARIPOSA PUD NPDMUNIOTH 04/18/2011 Historical
375015 Staff Enforcement Letter None SEL 07/26/2010 for Mariposa WWTF (10/1/10) NPDMUNIOTH 07/26/2010 Historical
351461 Notice of Violation None NOV 09/04/2008 for Mariposa WWTF for 1 MMP violation (1/1/00-1/24/08) NPDMUNIOTH 09/04/2008 Historical
248982 13267 Letter None NOV 06/04/2002 for Mariposa WWTP NPDMUNIOTH 06/04/2002 Historical
238355 13267 Letter None NOV 11/28/2001 for Mariposa WWTP NPDESWW 11/28/2001 Historical
Total Enforcement Actions: 19
  
  
  
  
Expand/Contract Enforcement Actions
Regulatory Measures linked to Related Parties
Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status
Total Regulatory Measures linked to Related Parties: 0
  
  
The current report was generated with data as of: 05/20/2026
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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