City of Santa Barbara

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Water Supply

Water Usage Data
How To Read the Water Usage Graph
Recent Water Usage Data
Archive Usage Data

How to Read the Water Usage Graph
The graph below shows the recent history of water usage in the City of Santa Barbara's service area, as measured by water produced and put into the distribution system. One acre foot equals 326,000 gallons. Each point on the graph represents a 12-month period. The graph includes potable water production, and recycled water for the period since 1989 when Phase I of the City's water reclamation project was completed.

A period of relative stability is evident during the mid-1980's. As severe drought developed during the late 1980's, usage declined moderately at first, then drastically as the drought emergency was declared in 1990. Since the end of the drought in 1992, usage has slowly recovered and has apparently leveled off at approximately 14,000 acre feet per year.

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Recent Water Usage Data
(Potable water, except as noted; typical pre-drought year included for comparison)
Link for archived data

	Prior to 1990’s Drought	2000	2001	2002	2003	2004	2005
Total Potable Production (AF):	16,300*	13,401	12,438	12,792	12,186	12,714	12,467
(hcf):	7,100,000	5,837,476	5,417,993	5,572,195	5,308,222	5,538,218	5,430,625
Total Potable Metered Sales (hcf):	6,532,000	5,513,158	5,170,331	5,525,196	5,283,138	5,616,032	5,230,594
Metered Sales Ratio:	92.0%	94.4%	95.4%	99.2%	99.5%	101.4%	96.3%
Estimated Service Area Population:	89,249	93,428	93,798	94,186	94,004	94,325	94,331
Gross Per Capita Consumption (gal/day):	163	128	118	121	116	120	118
Residential Metered Sales (hcf):	5,226,000	4,018,259	3,781,913	4,064,455	3,869,659	4,126,588	3,825,609
Resid. Per Capita Consump. (gal/day):	120	88	83	88	84	90	83
Average Use per Dwelling Unit (hcf/mth):
Single Family Residences:	17	13	12	13	12	13	12
Multi-Family Residences:	8	6	6	6	6	6	5

Median Use per S.F. Residence (hcf/mth):	10	9	9	10	9	10	9
Percent of Potable Sales By Class:
Single Family Residential:	52%	47%	46%	48%	47%	48%	48%
Multi-Family Residential:	26%	26%	27%	25%	26%	25%	25%
Commercial/ Industrial:	16%	22%	22%	21%	21%	21%	22%
Irrigation (Resid/Ag/ Recr/Com):	6%	5%	5%	6%	6%	6%	5%
Net Recycled Water Consumption (AF):	-----------	741	646	791	736	824	711
System Production, potable +recycled (AF):	16,300	14,968	13,936	13,583	12,922	13,538	13,178
Total System Metered Sales (hcf):	6,532,000	5,835,035	5,458,524	5,864,348	5,588,816	5,973,942	5,538,228
Total Water Accounts, potable +recycled:	-----------	25,233	25,267	25,388	25,527	25,653	25,809

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