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Monitoring Schedules (new format)


Water System No. : CA1910038 Federal Type : C
Water System Name : EL MONTE-CITY, WATER DEPT. State Type : C
Principal County Served : LOS ANGELES Primary Source : GW
Status : A Activity Date : 03-22-1979
Distribution System Classification : D3 Max Treatment Plant Classification : T2

NOTICE TO USERS OF THE DATABASE: Users of this database should use care in interpreting these data. Data that does not meet Division of Drinking Water (DDW) data quality objectives is not included and the provided data may not be representative of water served by a water system. For example, the presence of a contaminant in a particular source of water at a given concentration does not necessarily mean that the water from that source was served by the water system to its customers, or, if served, that the contaminant was present at that concentration. Water systems may not use certain sources or may treat or blend them prior to serving the water to customers.

Questions about contaminants in particular sources are best addressed by the specific public water system, or by the associated DDW district office.

The Division of Drinking Water's (DDW's) drinking water quality monitoring schedules identify upcoming required testing of drinking water for water systems in California. These documents should not be used for determining whether water systems are in compliance with monitoring requirements. The purpose for providing these monitoring schedules is to allow water systems to verify that their sampling and analyses have been incorporated into the DDW database and to identify upcoming required monitoring/sampling events.

Notes for Water Systems:
1. The monitoring notification documents should be considered "draft," in that they will change with subsequent updates, and as monitoring data are submitted, or as monitoring schedules are revised .
2. The monitoring notification documents are derived from the DDW Water Quality database and from schedules maintained by DDW districts.
3. If your upcoming monitoring or your data identified as "DUE" are not in agreement with this document, or if your have been advised of any increased monitoring that is not reflected in the report for a particular source, please contact your District Engineer or LPA representative. For a map of the districts, please click here.
4. If your notification report for a source is blank, this does not necessarily indicate compliance with all monitoring requirements.
5. These notification reports may not reflect compliance with initial monitoring for newly regulated constituents, or constituents that require special monitoring frequencies. For example, the DDW database is unable to accurately forecast the vulnerable non-volatile synthetic organic chemical (SOC) frequency for large water systems serving over 3,300 people of 2 quarters every 3 years.
5a. For radionuclide compliance monitoring, a gross alpha (GA) particle activity measurement may be substituted for other measurements when the assigned value is less than 5 pCi/L. The assigned value is calculated by adding 0.84 of the counting error (CE) to the gross alpha result (GA + 0.84xCE). If the assigned value is greater than 5 pCi/L, then the water sample must be analyzed for uranium per Section 64442, Article 5, Chapter 15, Division 4, Title 22 of the California Code of Regulations. In addition, if the difference between the assigned value and the uranium measurement [GA + (0.84 x CE) - U] is greater than 5 pCi/L, analysis for Radium-226 and Radium-228 is required. If you have specific questions, contact your DDW District Office.
6. Some Nitrate (as N) results under storet code 00618, will have a result of �N/A� which stands for �Not Applicable.� This stems from the change in regulation requiring that all nitrate sampling be reported as Nitrate (as N) starting January 1, 2016. Prior nitrate sampling was reported as Nitrate (as NO3). With this change in nitrate reporting requirements, the monitoring schedules have captured the last date of Nitrate (as NO3) sampling and applied it to Nitrate (as N) in determining the next due date [unless there have been Nitrate (as N) samples collected]. The Nitrate (as NO3) result, however, does not carry over to Nitrate (as N) which is why there may be a notation in the �Constituent Identification� column to reference storet code 71850 for the last nitrate result. In these instances, the �Constituent Identification� column will say, �NITRATE (as N) � [see 71850].� Any questions should be referred to your District Engineer.  
Test Legends:
  • PS Code = Primary Station Code; used by laboratories to upload water quality data
  • Old PS Code = (Water System Number)-(Sample Point ID)
  • New PS Code = (Water System Number)_(Facility ID)_(Sampling Point ID) to be used by laboratories to upload water quality data when CLIP (California Laboratory Intake Portal) is implemented
  • Facility Status: A = Active; P = Proposed
  • Certain PS Codes have been removed from this table as they are not intended to have water quality data electronically reported. As an example, a water system may have a PS Code to represent Well 01 and another PS Code to represent Well 01 Chlorination. However, water quality data should only be reported to the PS Code for Well 01. The PS Code for Well 01 Chlorination would be removed from the list to avoid confusion in uploading data. If you notice that a PS Code is missing from the list that may be needed for uploading water quality data, please contact your District Office or Local County Primacy Agency.

Click to hide / show columns: Old PS Code | New PS Code | Facility ID | Sample Point ID | Sample Point Name | Status


Monitoring Schedules for All Sampling Points
Monitoring Schedule for Individual Sampling Points
Old PS Codes New PS Codes Facility ID Sample Point ID Sample Point Name Status
1910038-002 CA1910038_002_002 002 002 WELL 02-A A
1910038-006 CA1910038_006_006 006 006 WELL 10 LACFC 2972Q A
1910038-008 CA1910038_008_008 008 008 WELL 12 - ACTIVE A
1910038-010 CA1910038_010_010 010 010 GAC FOR WELL 12 - COMBINED EFFLEUNT A
1910038-011 CA1910038_013_011 013 011 GAC FOR WELL 12 - VESSEL 01 - EFFLUENT A
1910038-012 CA1910038_013_012 013 012 GAC FOR WELL 12 - VESSEL 02 - EFFLUENT A
1910038-013 CA1910038_013_013 013 013 GAC FOR WELL 12 - VESSEL 03 - EFFLUENT A
1910038-014 CA1910038_013_014 013 014 GAC FOR WELL 12 - VESSEL 01 - 4TH PORT A
1910038-015 CA1910038_013_015 013 015 GAC FOR WELL 12 - VESSEL 02 - 4TH PORT A
1910038-016 CA1910038_013_016 013 016 GAC FOR WELL 12 - VESSEL 03 - 4TH PORT A
1910038-017 CA1910038_017_017 017 017 SAN GABRIEL VALLEY WC-EL MONTE CONN. TRD A
1910038-018 CA1910038_021_018 021 018 GAC FOR WELL 02A - VESSEL 01 - 75% PORT A
1910038-019 CA1910038_021_019 021 019 GAC FOR WELL 02A - VESSEL 02 - 75% PORT A
1910038-020 CA1910038_021_020 021 020 GAC FOR WELL 02A - VESSEL 01 - EFFLUENT A
1910038-021 CA1910038_021_021 021 021 GAC FOR WELL 02A - VESSEL 02 - EFFLUENT A
1910038-022 CA1910038_022_022 022 022 GAC FOR WELL 02A - COMBINED EFFLUENT A
1910038-023 CA1910038_023_023 023 023 CALIFORNIA AMERICAN WATER COMPANY - TRD. A
1910038-024 CA1910038_024_024 024 024 SOUTHERN CALIFORNIA WATER COMPANY - TRD A
1910038-028 CA1910038_033_028 033 028 GAC FOR WELL 10 - VESSEL 01 - 50% PORT A
1910038-029 CA1910038_033_029 033 029 GAC FOR WELL 10 - VESSEL 2 - 50% PORT A
1910038-030 CA1910038_033_030 033 030 GAC FOR WELL 10 - VESSEL 1 - 75% PORT A
1910038-031 CA1910038_033_031 033 031 GAC FOR WELL 10 - VESSEL 2 - 75% PORT A
1910038-032 CA1910038_033_032 033 032 GAC FOR WELL 10 - VESSEL 1 EFFLUENT A
1910038-033 CA1910038_033_033 033 033 GAC FOR WELL 10 - VESSEL 2 EFFLUENT A
1910038-034 CA1910038_034_034 034 034 GAC FOR WELL 10 - COMBINED EFFLUENT A
1910038-035 CA1910038_040_035 040 035 WELL 3 GAC VESSEL 1 50% PORT A
1910038-036 CA1910038_040_036 040 036 WELL 3 GAC VESSEL 2 50% PORT A
1910038-037 CA1910038_040_037 040 037 WELL 3 GAC VESSEL 1 75% PORT A
1910038-038 CA1910038_040_038 040 038 WELL 3 GAC VESSEL 2 75% PORT A
1910038-039 CA1910038_040_039 040 039 WELL 3 GAC VESSEL 1 EFFLUENT A
1910038-040 CA1910038_040_040 040 040 WELL 3 GAC VESSEL 2 EFFLUENT A
1910038-041 CA1910038_041_041 041 041 WELL 3 LPGAC COMBINED EFFLUENT A
1910038-042 CA1910038_042_042 042 042 WELL 2A AND 3 BLEND FOR NITRATE A
1910038-043 CA1910038_043_043 043 043 WELL 14 A
1910038-044 CA1910038_044_044 044 044 WELL 15 A
1910038-045 CA1910038_045_045 045 045 WELL 16 A
1910038-046 CA1910038_052_046 052 046 AGWTP INFLUENT A
1910038-047 CA1910038_052_047 052 047 AGWTP LEAD VESSEL 25% PORT A
1910038-048 CA1910038_052_048 052 048 AGWTP LEAD VESSEL 50% PORT A
1910038-049 CA1910038_052_049 052 049 AGWTP LEAD VESSEL 75% PORT A
1910038-050 CA1910038_052_050 052 050 AGWTP LAG VESSEL 25% PORT A
1910038-051 CA1910038_052_051 052 051 AGWTP LEAD VESSEL EFFLUENT A
1910038-052 CA1910038_052_052 052 052 AGWTP EFFLUENT A
1910038-800 CA1910038_DST_800 DST 800 SITE 1 -...* A
1910038-801 CA1910038_DST_801 DST 801 SITE 2 -...* A
1910038-802 CA1910038_DST_802 DST 802 SITE 3 -...* A
1910038-803 CA1910038_DST_803 DST 803 SITE 4 -...* A
1910038-LCR CA1910038_DST_LCR DST LCR Lead and Copper Sample Sites ** A
Old PS Codes Old PS Codes Facility ID Sample Point ID Sample Point Name Status
 
*Please refer to the Stage 2 DBP Monitoring Plan Approval Letter for full sample point names.
**Please use this PS Code for all lead and copper samples.