SAWS: Rates - Water Supply Fee
Aquifer Beaker

Edwards Aquifer

Aquifer Level 657.8'
9/19/17 - Official

The Edwards aquifer and its catchment area in the San Antonio region is about 8,000 square miles and includes all or part of 13 counties in south-central Texas.

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Landscape Watering
Last Digit of Address Watering Day
0 or 1 Monday
2 or 3 Tuesday
4 or 5 Wednesday
6 or 7 Thursday
8 or 9 Friday
No Watering on Weekends

Stage 1:
Water once a week

Watering with an irrigation system or sprinkler is allowed only once a week before 11 a.m. or after 7 p.m. on your designated watering day as determined by your address.

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Aquifer Level 657.8 | Stage 1: Water once a week


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Water Supply Fee

Water Supply Fee

Rate Structure

Effective for consumption on or about January 1, 2017

This fee directly funds the acquisition of new water supplies to reduce San Antonio’s dependence on the Edwards Aquifer.

The Water Supply Fee shall be assessed on all potable water service for water usage in every instance of service for each month or fraction thereof according to the schedule below:

RATE CLASS   Usage Gallon -
Block Threshold
Assessed Fee
Residential   2,992 $0.0954
    4,489 0.1669
    5,985 0.2145
    7,481 0.2623
    10,473 0.3100
    14,962 0.3577
    20,199 0.4292
    Over 20,199 0.6198
General   Base* 0.1799
    125% of Base 0.2070
    175% of Base 0.2699
    Over 175% of Base 0.3149
Wholesale   Base** 0.2344
    Over Base 0.7033
Irrigation   8,229 0.2354
    17,954 0.3296
    162,316 0.4238
    Over 162,316 0.5416

* The Base Use for General Class is defined as 100% of the Annual Average Consumption.

**The Base Use for the Wholesale Class is defined as 100% of the Annual Average Consumption or as agreed to by the wholesale customer and approved by the SAWS Board of Trustees.

Rev. 9/2016