Cal. Code Regs. tit. 23 § 638.1

Current through Register 2024 Notice Reg. No. 49, December 6, 2024

Section 638.1 - Definitions

As used in this Chapter, the following terms mean:

(a) "Apparent losses" means losses due to unauthorized consumption and/or nonphysical (paper) losses attributed to inaccuracies associated with customer metering, or systematic handling errors.

(b) "Authorized consumption" means the volume of water taken by registered customers, the water supplier, and others who are implicitly or explicitly authorized to do so. Authorized consumption may be billed or unbilled, metered or unmetered.

(c) "AWWA" means the American Water Works Association.

(d) "CA-NV AWWA" means the California-Nevada Section of the American Water Works Association.

(e) "Data grading values" means specific grade scores (on a scale from 1 to 10) applied to each input component in the AWWA Free Water Audit Software spreadsheet.

(f) "Data Validity Score (DVS)" means a measure of the overall trustworthiness of the data entered in the AWWA Free Water Audit Software. The DVS represents the validity of the water audit data and is a reflection of the level of best practices employed by the water supplier associated with the water supply system subject to the audit.

(g) "Department" means the Department of Water Resources.

(h) "General manager" means a person who holds an executive position with the urban retail water supplier with overall responsibility for managing operations, revenue, and costs. Such a position may also be described as a water department director, city manager, utilities manager, or the director of public works.

(i) "Level 1 validation" means a review of the water loss audit that includes an examination of the data sources used for each input and an evaluation of the DVS selected for each input of the audit, as described in Section 700.3.

(j) "Non-revenue water" means the portion of water consumption that is not billed and does not produce revenue. It equals the unbilled authorized consumption plus apparent and real losses.

(k) "Real losses" means the physical water losses from the pressurized potable water system and the utility's potable water storage tanks, up to the point of customer consumption.

(l) "Report" means the water loss audit report of a potable water supply required to be submitted to the Department as specified in Section 700.5.

(m) "Standardized water loss audit" means a water loss audit conducted in accordance with the method specified in Section 700.2.

(n) "Urban retail water supplier" means a water supplier, either publicly or privately owned, that directly provides potable municipal water to more than 3,000 end users or that supplies more than 3,000 acre-feet of potable water annually at retail for municipal purposes.

(o) "Validating" means a process whereby an urban retail water supplier uses a water audit validator to confirm the basis of data entries in the Reports and to characterize the quality of the reported data. All references herein to "validating" or "validation" refer to "Level 1 validation."

(p) "Water audit validation" refers to the process of examining water loss audit inputs to consider the water audit's accuracy and document the sources of uncertainty.

(q) "Water audit validator" means a person who meets the requirements of Section 700.4 to perform the validation of a water loss audit.

Cal. Code Regs. Tit. 23, § 638.1

1. New chapter 7 (sections 700.1-700.6) and section filed 1-24-2018; operative 1-24-2018 pursuant to Government Code section 11343.4(b)(3) (Register 2018, No. 4).
2. Change without regulatory effect relocating division 3, chapter 7 (sections 700.1-700.6) to new division 2, chapter 7 (sections 638.1-638.6) and renumbering section 700.1 to section 638.1 filed 2-22-2018 pursuant to section 100, title 1, California Code of Regulations (Register 2018, No. 8).

Note: Authority cited: Section 10608.34, Water Code. Reference: Sections 10608.12 and 10608.34, Water Code.