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
S673349 Intuitive Surgical Inc Privately-Owned Business 950 Kifer Rd Sunnyvale, CA 94086 N/A N/A
  
  
  
  
Expand/Contract Related Places
Related Places
Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date
S942573 Gilroy B154 Santa Clara 3 Facility Discharger 04/17/2026 None
S938858 B140 Santa Clara 2 Facility Discharger 11/20/2025 None
S938239 B140 Access Road Santa Clara 2 Facility Discharger 10/29/2025 None
S928316 Intuitive Santa Clara 2 Facility Discharger 01/28/2025 None
S924271 Intuitive Uranium Santa Clara 2 Facility Discharger 08/12/2024 None
S924270 Intuitive Surgical Santa Clara 2 Facility Discharger 08/12/2024 None
S924266 Intuitive Santa Clara 2 Facility Discharger 08/12/2024 None
S924265 Intuitive Surgical Santa Clara 2 Facility Discharger 08/12/2024 None
S924264 Intuitive Surgical 1450 Santa Clara 2 Facility Discharger 08/12/2024 None
S924262 Intutive Surgical S&V manufacturing Santa Clara 2 Facility Discharger 08/12/2024 None
S924261 Intuitive Surgical I&A Santa Clara 2 Facility Discharger 08/12/2024 None
S923898 Intuitive Santa Clara 2 Facility Discharger 07/30/2024 None
S916193 Intuitive Surgical Inc Bldg B140 Santa Clara 2 Facility Discharger 09/18/2023 None
S914948 Intuitive Santa Clara 2 Facility Discharger 08/04/2023 None
S914930 Intutive Surgical S&V manufacturing Santa Clara 2 Facility Discharger 08/04/2023 None
S914929 Intuitive Santa Clara 2 Facility Discharger 08/04/2023 None
S914928 Intuitive Surgical I&A Santa Clara 2 Facility Discharger 08/04/2023 None
S914927 Intuitive Surgical Santa Clara 2 Facility Discharger 08/04/2023 None
S914891 Intuitive Surgical 1450 Santa Clara 2 Facility Discharger 08/03/2023 None
S914871 Intuitive Surgical Santa Clara 2 Facility Discharger 08/02/2023 None
S899192 Intuitive Surgical RMA manufacturing Santa Clara 2 Facility Discharger 10/18/2021 None
S898745 ISI HQ South Building Santa Clara 2 Facility Discharger 09/30/2021 None
S898414 Intuitive Santa Clara 2 Facility Discharger 09/21/2021 None
S898409 Intuitive Santa Clara 2 Facility Discharger 09/21/2021 None
S898405 Intuitive Surgical Santa Clara 2 Facility Discharger 09/21/2021 None
S898403 Intuitive Surgical Santa Clara 2 Facility Discharger 09/21/2021 None
S898401 Intuitive Surgical Santa Clara 2 Facility Discharger 09/21/2021 None
S875547 Intuitive S&V Santa Clara 2 Facility Discharger 08/29/2019 None
S875545 Inuitive RMA Santa Clara 2 Facility Discharger 08/29/2019 None
S875417 Intutive I&A Santa Clara 2 Facility Discharger 08/29/2019 None
Total Related Places: 30
  
  
  
  
Expand/Contract Related Parties
Related Parties
Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification
N/A Mark Tiemeier Contact Owner Contact N/A N/A N/A
N/A Christopher Walsh Contact Owner Contact N/A N/A N/A
N/A Mark Tiemeier Contact Owner Contact N/A N/A N/A
N/A Christina Taft Richardt Contact Owner Contact N/A N/A N/A
Total Related Parties: 4
  
  
  
  
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?
S593702 Industrial 2 2 43NEC015344 Active INDSTW 2014-0057-DWQ 12/15/2025 None Discharger 11/20/2025 None None
S592945 Construction 2 2 43C410523 Active CONSTW 2009-0009-DWQ 11/13/2025 None Discharger 10/29/2025 None None
S581210 Industrial 2 2 43NEC014261 Active INDSTW 2014-0057-DWQ 02/19/2025 None Discharger 01/28/2025 None None
S576186 Industrial 2 2 43NEC013842 Active INDSTW 2014-0057-DWQ 10/04/2024 None Discharger 08/12/2024 None None
S541825 Industrial 2 2 43NEC010075 Active INDSTW 2014-0057-DWQ 09/29/2021 None Discharger 09/21/2021 None None
S541822 Industrial 2 2 43NEC010074 Active INDSTW 2014-0057-DWQ 09/29/2021 None Discharger 09/21/2021 None None
S541816 Industrial 2 2 43NEC010073 Active INDSTW 2014-0057-DWQ 09/29/2021 None Discharger 09/21/2021 None None
S541813 Industrial 2 2 43NEC010072 Active INDSTW 2014-0057-DWQ 09/29/2021 None Discharger 09/21/2021 None None
S541810 Industrial 2 2 43NEC010071 Active INDSTW 2014-0057-DWQ 09/29/2021 None Discharger 09/21/2021 None None
S512425 Industrial 2 2 43NEC005566 Active INDSTW 2014-0057-DWQ 10/09/2019 None Discharger 08/29/2019 None None
S512423 Industrial 2 2 43NEC005565 Active INDSTW 2014-0057-DWQ 10/09/2019 None Discharger 08/29/2019 None None
Total Regulatory Measures: 11
  
  
  
  
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.
S878204 10/02/2021 SW - Failure to meet NEC criteria Discharger failed to recertify the NEC by October 1, 2021 Violation N Internal Report Inuitive RMA S512426 2014-0057-DWQ Y
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: 1
*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
S444918 Notice of Violation None 2 43NEC005567 INDSTW 01/03/2022 Historical
S442097 Notice of Violation None 2 43NEC005567 INDSTW 10/18/2021 Historical
Total Enforcement Actions: 2
  
  
  
  
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: 05/19/2026
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