Compare Regulations
Compare state baseline against local requirements in a single view
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Compare state baseline against local requirements in a single view
Rows with an amber indicator differ across selections.
| Field | State Texas TCEQ | Local Edwards Aquifer Authority (Regional) Edwards Aquifer Authority (EAA), San Antonio |
|---|---|---|
| Permit | ||
| Permit / Authorization | Construction General Permit (TXR150000) | Edwards Aquifer Protection Program (EAPP) Authorization |
| Submit To | TCEQ | Edwards Aquifer Authority (EAA), San Antonio |
| Lead Time | Must file NOI and receive authorization before construction begins | 30–60 days for Recharge Zone projects; Contributing Zone review may be faster; EAA recommends pre-application meeting |
| Application Method | Online via TCEQ Water Quality ePay system | Paper application to EAA offices (900 E. Quincy St., San Antonio); pre-application consultation strongly encouraged |
| Fee | $325 for projects disturbing < 5 acres; $525 for ≥ 5 acres | EAPP application fee: $500 base + acreage-based fee (ranges from ~$500 for small sites to $5,000+ for large developments); annual compliance inspection fee may apply |
| Water Quality | ||
| Impervious Cover Limit | No statewide limit | Recharge Zone: 15% max impervious cover (hard cap under EAA Rules); Contributing Zone: varies by subwatershed (typically 30–60%); Transition Zone: no EAA limit but local jurisdiction rules apply |
| On-Site Treatment Required | Not specified at state level | Yes |
| Detention Required | Not specified at state level | Yes — Recharge Zone: 100% of the 100-year, 24-hour storm must be retained on-site with no surface discharge to the aquifer recharge features (caves, sinkholes, losing streams); Contributing Zone: water quality volume must be captured and treated before discharge |
| Turbidity / Discharge Standard | Not specified in CGP; discharges must not cause or contribute to violations of water quality standards | EAA prohibits discharges that could contaminate the aquifer; no numeric NTU limit but turbid discharges reaching recharge features are a violation; zero-discharge standard applies in Recharge Zone |
| SWPPP | ||
| SWPPP / Local Plan Required | Yes | Yes — EAA Best Management Practices (BMP) Plan — required as part of EAPP authorization |
| PE Stamp Required | No | Yes |
| Inspections | ||
| Inspection Requirements | Every 14 days and within 24 hours of a rainfall event producing ≥ 0.5 inches | EAA conducts site inspections during construction and post-construction in the Recharge Zone. Annual compliance reports required. TCEQ and EAA may conduct joint inspections for large projects. |
| Inspector Qualification | Stormwater Pollution Prevention Plan (SWPPP) Inspector — no state license required but must be knowledgeable | PE-of-record responsible for BMP Plan compliance; no additional EAA-specific certification required, but familiarity with karst geology is strongly recommended |
| Design & Zones | ||
| Local Design Manual | N/A — state level | EAA Edwards Aquifer Protection Program Rules and Technical Guidance |
| Special Overlay Zones | N/A — see local jurisdictions | Edwards Aquifer Recharge Zone, Edwards Aquifer Contributing Zone, Recharge Features (caves, sinkholes, losing streams) |