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 California Integrated Water Quality System Project (CIWQS)
   Facility At-A-Glance Report

  
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Place ID 646721
  
  
  
  
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General Information
Region Place ID Place Name Place Type Place Address Place County
5F 646721 Mariposa Co DON PEDRO SEWER ZONE 1 CS Collection_System 4639 Benhur Mariposa, CA, 95338 Mariposa

Expand/Contract Related Parties
Related Parties
Party Party Type Party Name Role Classification Relationship Start Date Relationship End Date
652815 Person Jason Lewis Is A Data Submitter For 10/21/2025
638922 Person John Luthey Is Onsite Manager For 06/06/2025
638922 Person John Luthey Is A Data Submitter For 04/10/2023
525063 Person Tony Souza Is A Data Submitter For 11/08/2010 01/21/2016
524844 Person Allen Toschi Is Onsite Manager For 10/14/2010 07/25/2025
369851 Person Darryl Nielsen Is Onsite Manager For 10/14/2010 10/14/2025
70303 Person Dana Hertfelder Is Onsite Manager For 03/20/2007 07/25/2025
27812 Organization Mariposa Cnty DPW Owner County Agency 02/06/2007
Total Related Parties: 8

Expand/Contract Regulatory Measures
Regulatory Measures
Reg Measure ID Reg Measure Type Region Program Order No. WDID Effective Date Expiration Date Status Amended?
320699 Enrollee - WDR 5F SSOMUNISML 2022-0103-DWQ 5SSO11326 02/13/2007 05/02/2011 Active N
Total Reg Measures: 1

Expand/Contract Violations
Violations
Violation ID Occurred Date Violation Type (-) Violation Description Corrective Action Status Classification Source
1143573 05/11/2025 SSOS Type: Category 1 Spill; Pump Station Failure - Mechanical,Pump Station Failure - Controls caused 5000 gallons of sewage to spill from Manhole,Pump Station at Don Pedro Sewer Lift Station #7, WDID#5C221003001 to Drainage Conveyance System,Unpaved Surface Plan Rehabilitation or Replacement of Sewer,Repaired Facilities or Replaced Defect. installed a temporary gas powered back up pump. Scheduling pump replacement in May 2025 Violation A SSO
Report displays most recent five years of violations. Refer to the Interactive Violation Report for more data.
Total Violations: 1 Priority Violations: 0
*Click the "(+/-) Violation Description" link to expand and contract the violation description.
*As of 5/20/2010, the Water Board's Enforcement Policy requires that all violations be classified as 1, 2 or 3, with class 1 being the highest. Prior to this, violations were simply classified as Yes or No. If a 123 classification has been assigned to a violation that occurred before this date, that classification data will be displayed instead of the Yes/No data.

Violation Types
SSOS = Sanitary Sewer Overflow/Spill/

Expand/Contract Enforcement Actions
Enforcement Actions
Enf Id Enf Type Enf Order No. Effective Date Status
378391 Notice of Violation 07/20/2010 Historical
Total Enf Actions: 1

Expand/Contract Inspections
Inspections
Inspection ID Inspection Type Lead Inspector Actual End Date Planned Violations Attachment
Total Inspections: 0 Last Inspection: None
  
The current report was generated with data as of: 11/21/2025
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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