San Antonio Water System

A non-potable water tank is installed on a property to capture and store water generated from rainwater, stormwater, cooling towers, air condition condensate or other process for use again on-site, typically as irrigation. However, the water is not for human consumption.

Effective May 1, 2013: Non-potable water tanks that meet one or more of the following criteria must register with San Antonio Water System:

• All non-potable water tanks located at a commercial or residential property with potable water back-up, regardless of tank capacity.
• All non-potable water tanks at a commercial location with a combined storage capacity over 5,000 gallons.
• All non-potable water tanks at a residential location with a combined storage capacity over 1,000 gallons.

* indicates required fields.

Non-Potable Water Tank Registration

Business name (if not a residential location):

* Applicant/owner First Name: * Applicant/owner Last Name:

* Email:

* Type of property [Check one]: Non-residential/Commercial (everything that is not a single-family home or duplex) Residential

Source water for tank collection (check all that apply): Rainwater Condensate water Recycled water Cooling tower blowdown Other

Potable water back-up: Yes (backflow required) No

If yes, provide backflow registration number(s):[Ex. bkfl-12345]

* SAWS account number: Exactly as it appears on your bill without spaces or dashes. - -

Use of stored water (check all that apply): Landscape irrigation Cooling tower make-up water Industrial Indoor use Other

If used for irrigation, are sprays or rotors used: [Check one]: Yes No

Type of treatment (check all that apply): Chlorine UV Other

Number of tanks on property [Check one]: One Two Three or more

Total tank capacity (gallons):

* Tank location(s) on property:

* Name of responsible owner or facility/maintenance manager:

Email address: Verify email address:

Manager Phone: -

* Tank Address:

* City: * State: * ZIP:

* Phone: - - Fax: - -

Legal Agreement

Please read and agree to the Agreement before submitting your registration.

I acknowledge that an air gap is present separating the potable water back-up and the receiving tank as required between potable back-up and the tank. I acknowledge that if I am using water for spray irrigation, I have a treatment plan for the stored water (drip application does not need water treatment). If I am using the non-potable water for indoor use, I have all of the above plus an expansion tank, contaminant disinfection (human consumption only - UV, activated charcoal, or both) and an annual inspection per Texas Commission on Environmental Quality requirements. I acknowledge all backflow devices are inspected annually. I acknowledge all pipe, fittings, heads, valve boxes and backflow boxes are an authorized purple color.

Best Management Practices

I acknowledge that routine use of a biocide is needed if non-potable water is used in conjunction with an irrigation system using spray or rotary heads. I acknowledge that gutters, screens, and first flush diverters should be inspected monthly and cleaned as needed or a minimum of once every quarter. I have read accept this Best Management Practices agreement. I understand and will abide by these practices as set forth by the San Antonio Water System and the State of Texas. I understand that in no way does this agreement constitute a permit or authorized use of the tank and that all regulations of the City of San Antonio and the State of Texas must be followed.

I have read and accept this Agreement and I understand and will abide by these guidelines as set forth by San Antonio Water System.

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