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California Integrated Water Quality System Project (CIWQS)
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Place ID 259165 		  
  
  
  
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General Information
Region Place ID Place Name Place Type Place Address Place County
8 259165 IEUA Regional Plant No. 1 Wastewater Treatment Facility 2450 East Philadelphia Ontario, CA, 91761 San Bernardino
Expand/Contract Related Parties
Related Parties
Party Party Type Party Name Role Classification Relationship Start Date Relationship End Date
624397 Person Scott Lening Pending-is a data submitter for 05/17/2021
147335 Organization Inland Empire Utilities Agency Owner Special District 09/18/2020
584685 Person Sarah Recinto Is A Data Submitter For 05/09/2020
551396 Person Richard Lao Is A Data Submitter For 05/09/2020 10/24/2023
579900 Person Christiana Daisy Is Onsite Manager For 01/06/2020
541040 Person Randy Lee Is Onsite Manager For 02/06/2017 08/01/2023
546361 Person Sylvie Lee Is Onsite Manager For 06/19/2014 03/08/2022
544318 Person Ernest Yeboah Is Onsite Manager For 12/02/2013 04/11/2017
532535 Person Chris Berch Is Onsite Manager For 04/04/2012 05/31/2019
532721 Person Craig Miller Is Onsite Manager For 04/03/2012 09/03/2013
147335 Organization Inland Empire Utilities Agency Owner and Operator Special District 04/12/2006
149707 Person Bonita Fan Is A Data Submitter For 02/06/2006
285855 Person Patrick Sheilds Is Onsite Manager For 06/17/2005 07/01/2012
Total Related Parties: 13
Expand/Contract Regulatory Measures
Regulatory Measures
Reg Measure ID Reg Measure Type Region Program Order No. WDID Effective Date Expiration Date Status Amended?
448253 NPDES Permit 8 NPDMUNILRG R8-2022-0041 8 362918001 08/01/2022 09/30/2027 Active N
440353 Co-Permitee SB SLIC 2020-0015-DWQ 8 362918001 07/09/2020 Active N
394393 NPDES Permit 8 NPDMUNILRG R8-2015-0036 8 362918001 11/01/2015 10/31/2020 Historical N
369778 NPDES Permit 8 NPDMUNILRG R8-2009-0021 8 362918001 07/20/2009 07/01/2014 Historical Y
305447 NPDES Permit 8 NPDMUNILRG R8-2006-0010 8 360104004 07/08/2006 05/01/2011 Historical Y
148762 NPDES Permit 8 NPDMUNILRG R8-2001-0001 8 360104004 01/19/2001 01/01/2006 Historical N
141981 NPDES Permit 8 NPDMUNILRG 95-043 8 360104004 05/26/1995 05/01/2000 Historical Y
140279 NPDES Permit 8 NPDMUNILRG 92-019 8 360104004 04/03/1992 04/01/1995 Historical Y
139153 NPDES Permit 8 NPDMUNILRG 90-017 8 360104004 03/09/1990 03/01/1995 Historical Y
138792 NPDES Permit 8 NPDMUNILRG 85-141 8 360104004 10/11/1985 10/01/1990 Historical Y
Total Reg Measures: 10
Expand/Contract Violations
Violations
Violation ID Occurred Date Violation Type (-) Violation Description Corrective Action Status Classification Source
1146470 07/31/2025 CTOX Chronic Toxicity-C.dubia-Reproduction Monthly Median limit is 0 Pass/Fail (Pass = 0, Fail = 1) and reported value was 1 Pass/Fail (Pass = 0, Fail = 1) at M-002A. The toxicity testing passed during the month of August 2025. No further actions are required. Violation U eSMR
1144242 02/18/2025 CTOX Chronic Toxicity-C.dubia-Survival Maximum Daily (MDEL) limit is 50 % effect and reported value was 54.5 % effect at M-002A. Please see "RP-1(M-002) IITRE (February 2025)" document in the January 2024 NPDES Report. During the reporting month of February 2025, it is speculated that the possible Phos-Check observation at Turner Trunk Line in January 2025 could have impacted toxicity results at the DP-002 site. For the duration of the testing from February 11 through 28, DP-002 was primarily comprised of RP-1 and RP-4 effluent. The filter bank cleanings did not have an unintended impact on bioassay results as operations staff isolated filters prior to cleaning and ensured pH readings were within range before processing the neutralized solution into the system. IEUA will continue to evaluate the toxicity test results closely for the next few months. Update: Toxicity was no longer found in February 2025 at M-002. Violation U eSMR
1129922 06/19/2024 CAT2 Chlorine, Total Residual Instantaneous Maximum limit is 0.1 mg/L and reported value was 4.6 mg/L at M-002A. At the time of the event, operations decreased RP-1 Tertiary influent flow from 33 to 28 MGD by reducing the intermediate pump station flow setpoint. Operations also increased recycled water pumping, which reduced outfall flow to Cucamonga Creek. These two measures brought the facility back into compliance. Operations noticed that the valve that feeds SBS to pumps 1 and 2 was partially open. The partially opened valve was then placed back to normal operations at 100% open, resolving the SBS dosing issue. In the same day as the discharge event, operations tested SBS pumps 1, 2, 5, and 6. After testing each SBS pump, all pumps tested were found to have no issues with pumping capability, and there was no issue found with the SBS discharge flow rate. Operations tested the SBS pipeline header repair, and determined the repair was successful. They placed the entire SBS header pipeline back in service, making all SBS pumps available. Violation U eSMR
1122893 11/16/2023 CAT2 Chlorine, Total Residual Instantaneous Maximum limit is 0.1 mg/L and reported value was 4.75 mg/L at M-002A. At the time of the event, the failed UPS was bypassed and the SBS pumps were manually started due to the inability to control them remotely. On the same day as the discharge event, the SBS pump station UPS was replaced. A planned action to prevent recurrence of this type of event will be for IEUA staff to evaluate the options to provide redundancy and reliability to the UPS system. Violation U eSMR
1115441 04/02/2023 LREP Annual SMR ( SUMRPT ) report for 2022 (2553933) was due on 01-APR-23 Violation B Report
1115500 04/02/2023 LREP Annual SMR ( SUMRPT ) report for 2022 (2711194) was due on 01-APR-23 Violation B Report
1115060 12/31/2022 DMON M-002 Annual Perchlorate - IEUA missed analysis; Annual 505 partial list - Eurofins Eaton Analytical (EEA) South Bend list of 505 analytes was missing several compounds Alachlor, Endrin, Heptachlor, Heptachlor Epoxide, Lindane, Methoxychlor; Annual Asbestos - EEA lost the sample between Monrovia and CEI Lab Collect additional sample in addition to the annual sample in 2023. Violation U eSMR
1109293 10/01/2022 LREP Annual SMR ( PRETRPT ) report for 2021 (2416108) was due on 30-SEP-22 Violation B Report
1103432 08/31/2021 DMON Toxicity data was not reported for 003-A for August 2021. Discharger used NODI P (for lab error) in DMRs triggering a violation. No data reported in eSMR or uploaded in attachments to verify/validate. Violation B Report
Report displays most recent five years of violations. Refer to the Interactive Violation Report for more data.
Total Violations: 9 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
CAT2 = Category 2 Pollutant (Effluent Violation for Group 2 Pollutant) CTOX = Chronic Toxicity
DMON = Deficient Monitoring LREP = Late Report
Expand/Contract Enforcement Actions
Enforcement Actions
Enf Id Enf Type Enf Order No. Effective Date Status
338012 Staff Enforcement Letter 11/07/2007 Historical
327123 Admin Civil Liability R8-2007-0033 05/18/2007 Historical
251365 Admin Civil Liability R8-2004-0031 03/09/2004 Historical
238402 Admin Civil Liability R8-2001-0118 12/07/2001 Historical
238401 Admin Civil Liability R8-2001-0110 11/08/2001 Withdrawn
233133 Notice of Violation 09/14/2000 Historical
221858 Cease and Desist Order 99-078 10/07/1999 Historical
223078 Cease and Desist Order 96-038 04/18/1996 Historical
223194 Cease and Desist Order 95-084 12/01/1995 Historical
223202 Cease and Desist Order 94-075 12/08/1994 Historical
224902 Admin Civil Liability 90-011 01/03/1990 Historical
224972 Admin Civil Liability 89-097 05/23/1989 Historical
224985 Admin Civil Liability 89-054 03/29/1989 Historical
225056 Cease and Desist Order 88-12401 10/14/1988 Historical
Total Enf Actions: 14
Expand/Contract Inspections
Inspections
Inspection ID Inspection Type Lead Inspector Actual End Date Planned Violations Attachment
48651578 B Type compliance inspection Najah Amin 03/16/2022 N 0 Download
24743766 A Type compliance inspection Julio Lara 05/20/2016 N 0 N/A
20416399 A Type compliance inspection Julio Lara 03/20/2015 N 0 [Attachments]
15877017 B Type compliance inspection Julio Lara 03/20/2014 N 0 [Attachments]
12063136 A Type compliance inspection Julio Lara 02/07/2013 N 0 [Attachments]
13460104 Preatment Audit Julio Lara 12/05/2012 N 0 Download
6856789 A Type compliance inspection Julio Lara 01/25/2012 N 0 [Attachments]
4094961 A Type compliance inspection Julio Lara 03/15/2011 N 0 [Attachments]
2490353 A Type compliance inspection Julio Lara 05/28/2010 N 0 Download
1712636 B Type compliance inspection Julio Lara 05/22/2009 N 0 Download
1419630 A Type compliance inspection Julio Lara 04/16/2008 N 0 Download
1138740 A Type compliance inspection Julio Lara 06/13/2007 Y 0 Download
715181 A Type compliance inspection Julio Lara 06/14/2006 Y 0 Download
338998 A Type compliance inspection Julio Lara 06/16/2005 Y 0 N/A
337351 Pretreatment compliance Julio Lara 01/11/2005 Y 0 N/A
335228 Pretreatment compliance Julio Lara 02/20/2004 Y 0 N/A
334016 A Type compliance inspection Julio Lara 02/05/2004 Y 0 N/A
330217 A Type compliance inspection Julio Lara 05/16/2003 Y 0 N/A
329374 Pretreatment compliance Julio Lara 02/24/2003 Y 0 N/A
326915 B Type compliance inspection Julio Lara 11/22/2002 Y 0 N/A
326914 B Type compliance inspection Julio Lara 10/16/2002 Y 0 N/A
280352 B Type compliance inspection Julio Lara 06/14/2002 Y 0 N/A
335227 Pretreatment compliance Julio Lara 05/21/2002 Y 0 N/A
280390 B Type compliance inspection Julio Lara 04/25/2002 Y 0 N/A
280878 Pretreatment compliance Julio Lara 03/14/2002 Y 0 N/A
280391 B Type compliance inspection Julio Lara 06/06/2001 Y 0 N/A
280369 A Type compliance inspection Julio Lara 01/18/2001 Y 0 N/A
280401 Follow-up inspection (noncompliance) Julio Lara 08/24/2000 Y 0 N/A
280400 Follow-up inspection (noncompliance) Julio Lara 08/23/2000 Y 0 N/A
280877 Pretreatment compliance Jane Qiu 08/17/2000 Y 0 N/A
280876 Pretreatment compliance Jane Qiu 07/13/2000 Y 0 N/A
280339 A Type compliance inspection Julio Lara 05/11/2000 Y 0 N/A
280364 B Type compliance inspection Jane Qiu 12/15/1999 Y 0 N/A
280363 A Type compliance inspection Steve Mayville 06/02/1999 Y 0 N/A
280353 B Type compliance inspection Steve Mayville 12/15/1998 Y 0 N/A
280362 A Type compliance inspection Steve Mayville 06/15/1998 Y 0 N/A
280360 B Type compliance inspection Steve Mayville 12/21/1997 Y 0 N/A
280366 B Type compliance inspection Steve Mayville 08/12/1997 Y 0 N/A
280368 A Type compliance inspection Ken Theisen 03/23/1994 Y 0 N/A
280367 B Type compliance inspection Ken Theisen 02/23/1994 Y 0 N/A
280338 A Type compliance inspection Ken Theisen 01/30/1994 Y 0 N/A
280393 B Type compliance inspection Ken Theisen 11/15/1993 Y 0 N/A
280402 A Type compliance inspection Tom Mbeke-Ekanem 11/04/1993 Y 0 N/A
280399 A Type compliance inspection Tom Mbeke-Ekanem 05/06/1993 Y 0 N/A
280361 A Type compliance inspection Pamela Creedon 06/11/1992 Y 0 N/A
280359 A Type compliance inspection Pamela Creedon 03/19/1992 Y 0 N/A
280365 Follow-up inspection (noncompliance) Pamela Creedon 02/26/1992 Y 0 N/A
280358 A Type compliance inspection Pamela Creedon 01/08/1992 Y 0 N/A
280396 B Type compliance inspection Joanne Lee 12/21/1990 Y 0 N/A
280398 A Type compliance inspection Hani Zarifa 09/27/1989 Y 0 N/A
280395 Complaint inspection Hani Zarifa 08/11/1989 Y 0 N/A
280394 A Type compliance inspection Hani Zarifa 05/17/1989 Y 0 N/A
280397 B Type compliance inspection Hani Zarifa 01/23/1989 Y 0 N/A
280392 A Type compliance inspection Hani Zarifa 09/07/1988 Y 0 N/A
280355 A Type compliance inspection Hani Zarifa 06/14/1988 Y 0 N/A
280357 Miscellaneous inspection Hani Zarifa 05/25/1988 Y 0 N/A
280356 B Type compliance inspection David Barr 02/26/1988 Y 0 N/A
280354 A Type compliance inspection David Barr 09/22/1987 Y 0 N/A
280389 A Type compliance inspection David Barr 04/07/1987 Y 0 N/A
Total Inspections: 59 Last Inspection: 03/16/2022
  
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.
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