OHA Drinking Water Services
OR41
PWS ID: 00906 ---- TUALATIN, CITY OF

Required Operators
Distribution Level 3
  • Oregon Administrative Rule:
    333-061-0235 OPERATOR REQUIREMENTS LEVELS 1-4
  • Requirements:
    HS/GED AND 8 YEARS OF ACCEPTABLE OPERATING EXPERIENCE w/2.5 Yrs ODM,
    OR
    HS/GED, 1 yr relevant post-high school, and 5 yrs experience, with 2.5 yrs of ODM;
    OR
    HS/GED, 2 yrs relevant post-high school, and 4 yrs experience with 2 yrs of ODM;
    OR
    HS/GED, 3 yrs relevant post-high school, and 3 yrs experience with 1.5 yrs of ODM
Cross Connection Control Specialist
  • Oregon Administrative Rule:
    333-061-0070 Cross Connection Control Requirements
  • Requirements:
    In community water systems having 300 or more service connections, water suppliers must ensure at least one person is certified as a Cross Connection Control Specialist, unless specifically exempted from this requirement by the Authority.
Name Distribution
Level		 Treatment
Level		 Filtration
Endorsement		 Small Water
Certification		 BAT
Certification		 CCS
Certification		 CCB # LCB # Phone
Number		 Email Expiration
Dates		 Sort DRC
Ernie D. Castro D1-3217


CCS-2235 503-691-3098 ecastro@tualatin.gov 12/31/2026 (D)
12/31/2026 (CCS)		 0
Terrance W. Leahy D3-6751
DRC



503-691-3095 tleahy@tualatin.gov 12/31/2027 (D) 2
Alan R. Cox D3-08663T1-008663

CCS-6714971-271-0329 acox@tualatin.gov 12/31/2026 (D/T)
12/31/2026 (CCS)		 0
Christopher J. Kwiatkowski D3-09361


CCS-6586971-295-1052 ckwiatkowski@tualatin.gov 12/31/2026 (D)
12/31/2026 (CCS)		 0
Levi C. Weldon D1-80804


CCS-80804971-978-7725 lweldon@tualatin.gov 12/31/2027 (D)
12/31/2027 (CCS)		 0
Mason S. Williams D1-802434



971-978-7603 mwilliams@tualatin.gov 12/31/2027 (D) 0
Richard M. Ormsby D1-643401



971-429-0046 rormsby@tualatin.gov 12/31/2027 (D) 0


Abbreviations:  BAT = Backflow Assembly Tester, CCS = Cross Connection Specialist, D = Distribution, DRC = Direct Responsible Charge, OIT = Operator in Training, SWS = Small Water System, T = Treatment

DRCs are marked in bold and listed first.