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Monitoring Schedules (new format)


Water System No. : CA1910126 Federal Type : C
Water System Name : POMONA - CITY, WATER DEPT. State Type : C
Principal County Served : LOS ANGELES Primary Source : SW
Status : A Activity Date : 01-01-1976
Distribution System Classification : D5 Max Treatment Plant Classification : T5

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
1910126-001 CA1910126_001_001 001 001 WELL 01 - MONITORING WELL A
1910126-002 CA1910126_002_002 002 002 WELL 02 A
1910126-003 CA1910126_003_003 003 003 WELL 03 A
1910126-006 CA1910126_006_006 006 006 WELL 06 A
1910126-010 CA1910126_010_010 010 010 WELL 10 A
1910126-013 CA1910126_013_013 013 013 WELL 13 A
1910126-015 CA1910126_015_015 015 015 WELL 15 A
1910126-016 CA1910126_016_016 016 016 WELL 16 A
1910126-017 CA1910126_017_017 017 017 WELL 17 A
1910126-021 CA1910126_021_021 021 021 WELL 21 A
1910126-023 CA1910126_023_023 023 023 WELL 23 A
1910126-025 CA1910126_025_025 025 025 WELL 25 A
1910126-026 CA1910126_026_026 026 026 WELL 26 A
1910126-027 CA1910126_027_027 027 027 WELL 27 A
1910126-028 CA1910126_028_028 028 028 WELL 28 A
1910126-031 CA1910126_031_031 031 031 TUNNEL WELL 01 A
1910126-032 CA1910126_032_032 032 032 TUNNEL WELL 03 A
1910126-033 CA1910126_033_033 033 033 RESERVOIR 5 EFFLUENT @ BOOSTER 2-TREATED A
1910126-035 CA1910126_035_035 035 035 TUNNEL WELL 04 A
1910126-036 CA1910126_036_036 036 036 TUNNEL WELL 02 A
1910126-038 CA1910126_038_038 038 038 RESERVOIR 6 EFFLUENT AT BOOSTER 3 A
1910126-040 CA1910126_040_040 040 040 WELL 36 A
1910126-041 CA1910126_041_041 041 041 WELL 32 A
1910126-042 CA1910126_042_042 042 042 PEDLEY FILTRATION PLANT - TREATED A
1910126-043 CA1910126_043_043 043 043 WELL 03 - VOC STRIPPER EFFLUENT A
1910126-044 CA1910126_044_044 044 044 ANION EXCHANGE PLANT 3 - BLEND A
1910126-045 CA1910126_044_045 044 045 ANION EXCHANGE PLANT 1&2 - TREATED A
1910126-046 CA1910126_046_046 046 046 ANION EXCHANGE PLANT - RAW A
1910126-048 CA1910126_048_048 048 048 PEDLEY FILTRATION PLANT - RAW A
1910126-049 CA1910126_049_049 049 049 WELL 05B A
1910126-050 CA1910126_050_050 050 050 WELL 08B A
1910126-051 CA1910126_051_051 051 051 WELL 09B A
1910126-060 CA1910126_060_060 060 060 MWD/PWR CONNECTION AT R5, 2 LINES-TRTD A
1910126-061 CA1910126_061_061 061 061 MWD/PWR CONNECTION AT RESERVOIR 8-TRTED A
1910126-062 CA1910126_062_062 062 062 MWD CONNECTION, PM-11 AT BOOSTER - TRTD A
1910126-064 CA1910126_064_064 064 064 RESERVOIR 2 - NITRATE BLEND POINT A
1910126-066 CA1910126_066_066 066 066 WELLS 7, 8B, & 32- VOC STRIPPER EFFLUENT A
1910126-068 CA1910126_068_068 068 068 PWRJWL CONNECTION 3 A
1910126-069 CA1910126_069_069 069 069 WELL 37 A
1910126-070 CA1910126_070_070 070 070 RESERVOIR 13 - TREATED A
1910126-071 CA1910126_071_071 071 071 WELL 37 IX TREATMENT FACILITY - TREATED A
1910126-072 CA1910126_072_072 072 072 AEP - 3 INFLUENT A
1910126-073 CA1910126_073_073 073 073 AEP - 3 EFFLUENT A
1910126-074 CA1910126_074_074 074 074 WELL 27 WELLHEAD DISINFECTION A
1910126-075 CA1910126_075_075 075 075 WELL 28 WELLHEAD DISINFECTION A
1910126-076 CA1910126_076_076 076 076 GAC PLANT FOR WELL 5B A
1910126-077 CA1910126_077_077 077 077 WELL 6 - GAC TREATMENT PLANT A
1910126-078 CA1910126_078_078 078 078 WELL 16 - GAC TREATMENT PLANT A
1910126-079 CA1910126_079_079 079 079 WELL 17 - GAC TREATMENT PLANT A
1910126-800 CA1910126_DST_800 DST 800 DS11 - 5...* A
1910126-801 CA1910126_DST_801 DST 801 DS14 - 2...* A
1910126-802 CA1910126_DST_802 DST 802 DS19-186...* A
1910126-803 CA1910126_DST_803 DST 803 DS23-224...* A
1910126-804 CA1910126_DST_804 DST 804 R02-3118...* A
1910126-805 CA1910126_DST_805 DST 805 DBP13 - ...* A
1910126-806 CA1910126_DST_806 DST 806 DBP17 - ...* A
1910126-807 CA1910126_DST_807 DST 807 DBP18 - ...* A
1910126-LCR CA1910126_DST_LCR DST LCR Lead and Copper Sample Sites ** A
1910126-063 CA1910126_TK016_063 TK016 063 RESERVOIR 9 - NITRATE BLEND WATER 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.