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PS Code Transition


Water System No. : CA3910001 Federal Type : C
Water System Name : CALIFORNIA WATER SERVICE - STOCKTON State Type : C
Principal County Served : SAN JOAQUIN Primary Source : SWP
Status : A Activity Date : 01-01-1976
Distribution System Classification : D4 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
Water System Sampling Points
Old PS Codes New PS Codes Facility ID Sample Point ID Sample Point Name Status
3910001-007 CA3910001_007_007 007 007 WELL 07-02 A
3910001-013 CA3910001_013_013 013 013 WELL 16-01 A
3910001-015 CA3910001_015_015 015 015 WELL 18-01 - RAW A
3910001-018 CA3910001_018_018 018 018 WELL 21-01 - STANDBY A
3910001-028 CA3910001_028_028 028 028 WELL 35-01 A
3910001-029 CA3910001_029_029 029 029 WELL 36-01 - RAW A
3910001-045 CA3910001_045_045 045 045 WELL 52-01 - RAW PRE-BLEND A
3910001-050 CA3910001_050_050 050 050 WELL 59-01 A
3910001-051 CA3910001_051_051 051 051 WELL 60-01 A
3910001-052 CA3910001_052_052 052 052 WELL 61-01 - RAW A
3910001-053 CA3910001_053_053 053 053 WELL 62-01 - RAW PRE-BLEND A
3910001-054 CA3910001_054_054 054 054 WELL 63-01 A
3910001-055 CA3910001_055_055 055 055 WELL 66-01 A
3910001-056 CA3910001_056_056 056 056 WELL 66-02 A
3910001-058 CA3910001_058_058 058 058 WELL 68-01 A
3910001-059 CA3910001_059_059 059 059 WELL 69-01 - RAW PRE-BLEND A
3910001-060 CA3910001_060_060 060 060 WELL 69-02 - RAW PRE-BLEND A
3910001-061 CA3910001_061_061 061 061 WELL 70-01 - RAW PRE-BLEND A
3910001-062 CA3910001_062_062 062 062 WELL 71-01 A
3910001-063 CA3910001_063_063 063 063 WELL 75-01 - RAW A
3910001-064 CA3910001_064_064 064 064 WELL 76-01 - RAW A
3910001-065 CA3910001_065_065 065 065 WELL 77-01 A
3910001-067 CA3910001_067_067 067 067 WELL 79-01 A
3910001-069 CA3910001_069_069 069 069 STOCKTON EAST PLANT - TREATED A
3910001-083 CA3910001_083_083 083 083 WELL 18-01 - TREATED A
3910001-094 CA3910001_094_094 094 094 WELL 36-01 - TREATED A
3910001-114 CA3910001_114_114 114 114 WELL 61-01 - TREATED A
3910001-125 CA3910001_125_125 125 125 WELL 75-01 - TREATED A
3910001-126 CA3910001_126_126 126 126 WELL 76-01 - TREATED A
3910001-130 CA3910001_130_130 130 130 WELL 85-01 - RAW PRE-BLEND A
3910001-131 CA3910001_131_131 131 131 ARSENIC BLENDING STATION EFFLUENT A
3910001-132 CA3910001_132_132 132 132 WELL 21-02 A
3910001-133 CA3910001_133_133 133 133 WELL 87-01 A
3910001-901 CA3910001_DST_901 DST 901 ST2DBP -...* A
3910001-902 CA3910001_DST_902 DST 902 ST2DBP -...* A
3910001-903 CA3910001_DST_903 DST 903 ST2DBP -...* A
3910001-904 CA3910001_DST_904 DST 904 ST2DBP -...* A
3910001-905 CA3910001_DST_905 DST 905 ST2DBP -...* A
3910001-906 CA3910001_DST_906 DST 906 ST2DBP -...* A
3910001-907 CA3910001_DST_907 DST 907 ST2DBP -...* A
3910001-LCR CA3910001_DST_LCR DST LCR Lead and Copper Sample Sites ** A
3910001-001 CA3910001_001_001 001 001 WELL 01-16 - ABANDONED I
3910001-002 CA3910001_002_002 002 002 WELL 01-23 - DESTROYED I
3910001-003 CA3910001_003_003 003 003 WELL 01-24 - DESTROYED I
3910001-004 CA3910001_004_004 004 004 WELL 01-25 - DESTROYED I
3910001-005 CA3910001_005_005 005 005 WELL 04-02 - INACTIVE I
3910001-006 CA3910001_006_006 006 006 WELL 05-04 - DESTROYED I
3910001-008 CA3910001_008_008 008 008 WELL 08-01 - DESTROYED I
3910001-009 CA3910001_009_009 009 009 WELL 09-01 - DESTROYED I
3910001-010 CA3910001_010_010 010 010 WELL 10-01 - DESTROYED I
3910001-011 CA3910001_011_011 011 011 WELL 13-01 - DESTROYED I
3910001-012 CA3910001_012_012 012 012 WELL 15-01 - INACTIVE I
3910001-014 CA3910001_014_014 014 014 WELL 17-01 - DESTROYED I
3910001-016 CA3910001_016_016 016 016 WELL 19-01 - DESTROYED I
3910001-017 CA3910001_017_017 017 017 WELL 20-01 - DESTROYED I
3910001-019 CA3910001_019_019 019 019 WELL 23-01 - DESTROYED I
3910001-020 CA3910001_020_020 020 020 WELL 24-01 - DESTROYED I
3910001-021 CA3910001_021_021 021 021 WELL 25-01 - DESTROYED I
3910001-022 CA3910001_022_022 022 022 WELL 26-01 - DESTROYED I
3910001-023 CA3910001_023_023 023 023 WELL 27-01 - DESTROYED I
3910001-024 CA3910001_024_024 024 024 WELL 28-01 - DESTROYED I
3910001-025 CA3910001_025_025 025 025 WELL 30-01 - DESTROYED I
3910001-026 CA3910001_026_026 026 026 WELL 31-01 - DESTROYED I
3910001-027 CA3910001_027_027 027 027 WELL 34-01 - INACTIVE I
3910001-030 CA3910001_030_030 030 030 WELL 37-01 - DESTROYED I
3910001-031 CA3910001_031_031 031 031 WELL 38-01 - DESTROYED I
3910001-032 CA3910001_032_032 032 032 WELL 39-01 - INACTIVE I
3910001-033 CA3910001_033_033 033 033 WELL 40-01 - INACTIVE I
3910001-034 CA3910001_034_034 034 034 WELL 41-01 - DESTROYED I
3910001-035 CA3910001_035_035 035 035 WELL 42-01 - DESTROYED I
3910001-036 CA3910001_036_036 036 036 WELL 43-01 - DESTROYED I
3910001-037 CA3910001_037_037 037 037 WELL 43-02 - DESTROYED I
3910001-038 CA3910001_038_038 038 038 WELL 44-01 - INACTIVE I
3910001-039 CA3910001_039_039 039 039 WELL 45-01 - DESTROYED I
3910001-040 CA3910001_040_040 040 040 WELL 46-01 - INACTIVE I
3910001-041 CA3910001_041_041 041 041 WELL 47-01 - INACTIVE I
3910001-042 CA3910001_042_042 042 042 WELL 49-01 - DESTROYED I
3910001-043 CA3910001_043_043 043 043 WELL 50-01 - DESTROYED I
3910001-044 CA3910001_044_044 044 044 WELL 51-01 - INACTIVE I
3910001-046 CA3910001_046_046 046 046 WELL 53-01 - DESTROYED I
3910001-047 CA3910001_047_047 047 047 WELL 54-01 - DESTROYED I
3910001-048 CA3910001_048_048 048 048 WELL 56-01 - DESTROYED I
3910001-049 CA3910001_049_049 049 049 WELL 57-01 - DESTROYED I
3910001-057 CA3910001_057_057 057 057 WELL 67-01 - INACTIVE I
3910001-066 CA3910001_066_066 066 066 WELL 78-01 - INACTIVE I
3910001-068 CA3910001_068_068 068 068 STOCKTON EAST PLANT - RAW - ABANDONED I
3910001-070 CA3910001_070_070 070 070 WELL 01-16 - ABANDONED I
3910001-071 CA3910001_071_071 071 071 WELL 01-23 - DESTROYED- TREATED I
3910001-072 CA3910001_072_072 072 072 WELL 01-24 - TREATED - DESTROYED I
3910001-073 CA3910001_073_073 073 073 WELL 01-25 - DESTROYED- TREATED I
3910001-076 CA3910001_076_076 076 076 WELL 08-01 - DESTROYED- TREATED I
3910001-077 CA3910001_077_077 077 077 WELL 09-01 - INACTIVE - TREATED I
3910001-078 CA3910001_078_078 078 078 WELL 10-01 - DESTROYED XCLD I
3910001-079 CA3910001_079_079 079 079 WELL 13-01 - DESTROYED I
3910001-080 CA3910001_080_080 080 080 WELL 15-01 - INACTIVE - TREATED I
3910001-082 CA3910001_082_082 082 082 WELL 17-01 - DESTROYED, TREATED I
3910001-084 CA3910001_084_084 084 084 WELL 19-01 - INACTIVE I
3910001-085 CA3910001_085_085 085 085 WELL 20-01 - DESTROYED, TREATED I
3910001-087 CA3910001_087_087 087 087 WELL 26-01 - DESTROYED, TREATED I
3910001-088 CA3910001_088_088 088 088 WELL 27-01 - DESTROYED, TREATED I
3910001-089 CA3910001_089_089 089 089 WELL 28-01 - INACTIVE - TREATED I
3910001-090 CA3910001_090_090 090 090 WELL 30-01 - INACTIVE, TREATED I
3910001-091 CA3910001_091_091 091 091 WELL 31-01 - DESTROYED- INACTIVE I
3910001-095 CA3910001_095_095 095 095 WELL 37-01 - DESTROYED, TREATED I
3910001-096 CA3910001_096_096 096 096 WELL 38-01 - DESTROYED, TREATED I
3910001-097 CA3910001_097_097 097 097 WELL 39-01 - TREATED - INACTIVE I
3910001-098 CA3910001_098_098 098 098 WELL 40-01 - INACTIVE - TREATED I
3910001-099 CA3910001_099_099 099 099 WELL 43-01 - INACTIVE - TREATED I
3910001-100 CA3910001_100_100 100 100 WELL 43-02 - TREATED - DESTROYED I
3910001-101 CA3910001_101_101 101 101 WELL 44-01 - TREATED - INACTIVE I
3910001-102 CA3910001_102_102 102 102 WELL 45-01 - DESTROYED I
3910001-103 CA3910001_103_103 103 103 WELL 46-01 - TREATED -INACTIVE I
3910001-104 CA3910001_104_104 104 104 WELL 47-01 - TREATED - INACTIVE I
3910001-106 CA3910001_106_106 106 106 WELL 50-01 - DESTROYED, TREATED I
3910001-107 CA3910001_107_107 107 107 WELL 51-01 - TREATED - INACTIVE I
3910001-109 CA3910001_109_109 109 109 WELL 53-01 - DESTROYED, TREATED I
3910001-110 CA3910001_110_110 110 110 WELL 56-01 - DESTROYED, TREATED I
3910001-111 CA3910001_111_111 111 111 WELL 57-01 - INACRIVE, TREATED I
3910001-119 CA3910001_119_119 119 119 WELL 67-01 - TREATED - INACTIVE I
3910001-123 CA3910001_123_123 123 123 WELL 70-01 - TREATED - INACTIVE I
3910001-128 CA3910001_128_128 128 128 WELL 78-01 - TREATED - INACTIVE I
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.