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CA3810011

San Francisco Public Utilities Commission

San Francisco · SAN FRANCISCO County · Potable Water · Retail

Real loss per connection per day (2024)

33.0gallons

Higher than 61% of California systems

Real loss as % of water supplied

10.3%

Total loss 12.4% · apparent 2.1%

Change vs prior year

−2.4gal/conn/day

Loss falling

Real loss volume, latest audit

2.18B gal

6,687 AF · 180,895 connections

Loss history

9 audit years available (2016–2024).

Teal area: real loss in gallons per service connection per day. Orange line: real loss as a percentage of water supplied. Gaps mean the metric was not calculable for that audit.

Peer comparison

This system

33.0gal/conn/day

SAN FRANCISCO County median

33.0gal/conn/day

Statewide median

26.8gal/conn/day

Audit record

YearPeriodSuppliedReal lossgal/conn/daygal/mile/dayReal %Total %ILIValidityStatus
20242024-07-01 → 2025-06-3064,846 AF6,687 AF33.04,65610.3%12.4%2.3084Under Review
20232023-07-01 → 2024-06-3064,126 AF7,184 AF35.44,99111.2%13.2%2.4879Preliminarily Approved
20222022-07-01 → 2023-06-3063,183 AF5,980 AF29.64,1129.5%11.6%2.0679Preliminarily Approved
20212021-07-01 → 2022-06-3062,380 AF4,400 AF21.83,0407.1%9.2%1.5289Preliminarily Approved
20202020-07-01 → 2021-06-3063,170 AF4,782 AF23.83,3167.6%9.5%1.6589Requirements Addressed
20192019-07-01 → 2020-06-3071,164 AF6,735 AF33.54,7029.5%11.3%2.3489Requirements Addressed
20182018-07-01 → 2019-06-3071,348 AF5,470 AF27.33,8257.7%9.6%1.9089Requirements Addressed
20172017-07-01 → 2018-06-3072,014 AF5,313 AF26.63,7837.4%9.4%1.8689Requirements Addressed
20162016-07-01 → 2017-06-3068,882 AF4,127 AF20.72,9666.0%8.5%1.4589Requirements Addressed

Data quality notes

No integrity flags were raised on this system's audits.

Provenance

Audit data
CA Urban Retail Water System Water Loss Annual Loss Audit Data (DWR)
Volume normalization
Source acre-feet and million-gallon values converted at 1 acre-foot = 325,851 gallons
Geography
California SABL drinking-water service areas + EPA ORD SAB Model service-area polygon (PWSID)
Geography match
pwsid_exact_service_area · high confidence
Audits published
9
Full method and caveats