General Information Party ID Party Name Party Classification Mailing Address Work Phone Email/Website 598434 Niland County Sanitation District Special District 155 South 11th Street El Centro, CA 92243 760-996-6775 null Related Places Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date 244348 Niland SD WWTP Imperial 7 Wastewater Treatment Facility Operator 06/01/2019 null Related Parties Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification 652303 Ricardo Arguellez Person Data Submitter 09/30/2025 null null 652303 Ricardo Arguellez Person Data Submitter 09/15/2025 null null 648533 Jose Romero Person Data Submitter 10/08/2025 null null 541729 John Gay Person Legally Responsible Official 09/19/2025 null null Regulatory Measures(non-enforcement) Reg. Measure ID Regulatory Measure Type Region WDID Title Status Program Order No. RM Effective Date RM Termination Date Relationship Relationship Start Date Relationship End Date 430972 NPDES Permit 7 7A130109011 NPDES R7-2019-0005 for Niland County Sanitation District Historical NPDMUNIOTH R7-2019-0005 06/01/2019 07/31/2025 Discharger 06/04/2019 null 461878 NPDES Permit 7 7A130109011 NPDES R7-2025-0017 for Niland County Sanitation District Active NPDMUNIOTH R7-2025-0017 08/01/2025 null Discharger 07/22/2025 null Violations within the past calendar year 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. 1147211 09/02/2025 Late Report Monthly SMR ( MONNPDES ) report for July 2025 (2987662) was due on 01-SEP-25 Violation null Report Niland SD WWTP 430972 R7-2019-0005 N 1148356 10/02/2025 Late Report Monthly SMR ( MONNPDES ) report for August 2025 (3011988) was due on 01-OCT-25 Violation null Report Niland SD WWTP 461878 R7-2025-0017 N 1148443 08/04/2025 CAT1 Total Suspended Solids (TSS) Weekly Average (Mean) limit is 84 mg/L and reported value was 98.4 mg/L at EFF-001. Violation N eSMR Niland SD WWTP 461878 R7-2025-0017 N 1148440 08/21/2025 Deficient Monitoring Selenium sample analysis was conducted using an alternative test procedure due to a malfunction in the laboratory¿s instrumentation. However, the laboratory did not notify me of this procedural change prior to conducting the analysis. As a result, the reported Selenium concentration was below 0.40 mg/L; however, the NPDES limit is 4.08 ug/L, which is below the MDL of the test used. Violation N eSMR Niland SD WWTP 461878 R7-2025-0017 N 1148441 08/04/2025 CAT1 Total Suspended Solids (TSS) Monthly Average (Mean) limit is 56 mg/L and reported value was 068.4 mg/L at EFF-001. Violation N eSMR Niland SD WWTP 461878 R7-2025-0017 N 1148442 08/04/2025 CAT1 Total Suspended Solids (TSS), Percent Removal 30-Day Average limit is 65 % and reported value was 37.25 % at EFF-001. Violation N eSMR Niland SD WWTP 461878 R7-2025-0017 N Enforcement Actions Enforcement ID Enforcement Type Enf. Order No. Title Program Effective Date Status 462353 Admin Civil Liability R7-2025-0001 ACL R7-2025-0001 for Niland County Sanitation District NPDMUNIOTH 08/13/2025 Active Regulatory Measures linked to Related Parties Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status