CSV

Real Water Loss Budget: System-Specific Standards

Consistent with California Code of Regulations title 23 §980 through §986, urban retail water suppliers are required to comply with real water loss standards.

This table contains the real water loss standards for public water systems owned and operated by urban retail water suppliers. The list of public water systems in this resource is based on the PWSID-DWRID crosswalk resource that is also a part of the Urban Water Use Objectives dataset and the April 9, 2024 water loss standards.

Consistent with §984 of the California Code of Regulations, default parameters in the economic model used to generate system-specific standards may be updated, upon supplier request. To submit a request for an update, please email DDW-WaterLossControl@waterboards.ca.gov.

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Data dictionary

Field definitions supplied by the publishing agency in CKAN.

Column	Type	Label	Description
ORG_ID	numeric	ORG_ID	—
SUPPLIER_NAME	text	SUPPLIER_NAME	—
PWSID	text	PWSID	—
PWS_NAME	text	PWS_NAME	—
REAL_WATER_LOSS_STANDARD	numeric	REAL_WATER_LOSS_STANDARD	—
STANDARD_TYPE	text	STANDARD_TYPE	—
NOTES	text	NOTES	—
FY_START_DATE	date	FY_START_DATE	—
FY_END_DATE	date	FY_END_DATE	—

Resource details

Format	CSV
Size	208 KB
Rows	1,583
Last updated	Sep 27, 2026
Part of	Urban Water Use Objectives – Relevant Data

Other resources in this dataset

CKAN Data API

Access resource data through the CKAN DataStore API. The examples below use this resource's ID.

Endpoints

The Data API provides these actions. Creating or updating records requires appropriate permissions; the query actions read public DataStore records.

Create	`https://ckan.cdt.dev.datopian.com/api/3/action/datastore_create`
Update / insert	`https://ckan.cdt.dev.datopian.com/api/3/action/datastore_upsert`
Query	`https://ckan.cdt.dev.datopian.com/api/3/action/datastore_search`
Query via SQL	`https://ckan.cdt.dev.datopian.com/api/3/action/datastore_search_sql`

Query examples

First five results

"https://ckan.cdt.dev.datopian.com/api/3/action/datastore_search?resource_id=1f1e87fa-8680-4693-92c9-49f8da3d9116&limit=5"

Results containing "jones"

"https://ckan.cdt.dev.datopian.com/api/3/action/datastore_search?resource_id=1f1e87fa-8680-4693-92c9-49f8da3d9116&q=jones"

SQL query

"https://ckan.cdt.dev.datopian.com/api/3/action/datastore_search_sql?sql=SELECT%20%2A%20FROM%20%221f1e87fa-8680-4693-92c9-49f8da3d9116%22%20LIMIT%205"

SQL queries depend on whether SQL search is enabled by the portal.

OData query

Use the resource's OData URL and its field names for paging, selecting columns, or filtering rows.

ODATA_RESOURCE_URL?$top=5
ODATA_RESOURCE_URL?$skip=5&$top=5
ODATA_RESOURCE_URL?$select=FIELD_NAME&$filter=FIELD_NAME eq 'VALUE'

Replace ODATA_RESOURCE_URL, FIELD_NAME, and VALUE with the details for the selected resource. See the OData query options guide (opens in a new tab) for more examples.

Use the API in code

JavaScript (JSONP)

var data = { resource_id: '1f1e87fa-8680-4693-92c9-49f8da3d9116', limit: 5, q: 'jones' };
$.ajax({
  url: 'https://ckan.cdt.dev.datopian.com/api/3/action/datastore_search',
  data: data,
  dataType: 'jsonp',
  success: function (response) {
    console.log(response.result.total, response.result.records);
  }
});

Python

import json
from urllib.request import urlopen

url = 'https://ckan.cdt.dev.datopian.com/api/3/action/datastore_search?resource_id=1f1e87fa-8680-4693-92c9-49f8da3d9116&limit=5'
with urlopen(url) as response:
    result = json.load(response)['result']
print(result['total'], result['records'])

For parameters and response fields, see the CKAN DataStore documentation (opens in a new tab).