SW

Stormwater Directory

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City of San Antonio / Bexar County(3 more)

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Field
Local
City of San Antonio / Bexar County
City of San Antonio Development Services Department (DSD); San Antonio River Authority (SARA) for river-adjacent projects; Edwards Aquifer Authority (EAA) for recharge/contributing zone sites
Permit
Permit / AuthorizationCity of San Antonio Stormwater Permit + Edwards Aquifer Protection Program (EAPP) Review (where applicable)
Submit ToCity of San Antonio Development Services Department (DSD); San Antonio River Authority (SARA) for river-adjacent projects; Edwards Aquifer Authority (EAA) for recharge/contributing zone sites
Lead TimeDSD plan review: 2–6 weeks; EAA permit review: 30–60 days for projects in Recharge Zone
Application MethodCity: AMANDA online permitting portal (cosagis.com); EAA: paper application to EAA offices
FeeCity permit fee based on project size; EAA Protection Program review fee: $500–$2,000+ depending on acreage and zone
Water Quality
Impervious Cover LimitRecharge Zone: 15% max impervious cover (EAA rule); Contributing Zone: 30% max in some subwatersheds; Urban areas outside protected zones: no citywide cap but water quality controls required
On-Site Treatment RequiredYes
Detention RequiredYes — Detention required per SARA Drainage Criteria Manual for 2-year and 100-year storms; Recharge Zone sites must demonstrate 100% on-site infiltration of the 100-year storm with no surface discharge in some areas
Turbidity / Discharge StandardNo local numeric NTU limit; compliance with Edwards Aquifer Protection Program water quality standards required; TCEQ TXR150000 narrative standard applies
SWPPP
SWPPP / Local Plan RequiredYes — SWPPP per TCEQ + City Erosion Control Plan required as part of grading permit
PE Stamp RequiredYes
Inspections
Inspection RequirementsCity DSD inspects grading and drainage installations. SARA inspects permitted work near river corridor. EAA may conduct compliance inspections for Recharge Zone activities.
Inspector QualificationPE-of-record responsible for compliance; no additional local certification beyond TCEQ requirements
Design & Zones
Local Design ManualSan Antonio River Authority (SARA) Drainage Criteria Manual + City of San Antonio Stormwater Design Guide
Special Overlay ZonesEdwards Aquifer Recharge Zone, Edwards Aquifer Contributing Zone, SARA River Corridor / Greenway, FEMA Floodplain (Special Flood Hazard Area)