Environmental Rules in Cedar Park, TX: What Residents Actually Need to Know
If you live in Cedar Park or are thinking about moving there, environmental rules are one of those things you probably won't think about until they affect you directly. Cedar Park has 5 specific rules on the books covering different aspects of environmental rules, and some of them might surprise you.
Stormwater Management
Cedar Park operates an MS4 under TPDES General Permit TXR040000 and prohibits sweeping, dumping, or discharging anything other than uncontaminated stormwater into the storm sewer system or waterways.
Key details: MS4 permit: TPDES General Permit TXR040000. Design manual: City of Austin Drainage Criteria Manual (adopted). Max fine: $2,000/day (health & safety). Aquifer overlay: Edwards Aquifer Recharge/Contributing Zone.
General penalty under §1.01.009: up to $500 per violation for general code violations, up to $2,000 per day for health/safety violations (including illicit discharge that endangers water quality). Each day a violation continues is a separate offense.
Flood Zones
All development inside a FEMA Special Flood Hazard Area requires a Floodplain Development Permit; the City enforces FIRMs adopted from the Williamson County FIS (9/6/2008) and Travis County FIS (1/6/2016).
Key details: Permit required: Yes — Floodplain Development Permit. Williamson Co. FIRM date: September 6, 2008. Travis Co. FIRM date: January 6, 2016. Adopting ordinance: CO59-08-09-25-C5 (amended by CO31-16-02-25-C1). Max fine: $2,000/day.
Violation is a Class C misdemeanor punishable per the general penalty in §1.01.009 — up to $2,000 per day for floodplain (health-and-safety) violations. Unpermitted fill or structures in the SFHA can also trigger NFIP probation and federal flood insurance rate increases for all city policyholders.
This is not one of those rules that cities tend to ignore. Cedar Park actively enforces its flood zones requirements.
Erosion Control
Site plans must show temporary and permanent erosion controls; controls must be installed before fill or grading begins and maintained until the site is revegetated.
Key details: Controls in place before grading: Required. Site plan must show controls: Yes. Revegetation before control removal: Required. TCEQ CGP threshold: 1+ acre disturbed (TXR150000).
Stop-work order issued by Engineering; general penalty up to $2,000/day for health-and-safety violations under §1.01.009. Removal of controls before revegetation can trigger MS4 enforcement under TPDES TXR040000.
Coastal Development
No local coastal development ordinance — Cedar Park is an inland Central Texas city in Williamson and Travis Counties, roughly 165 miles from the Gulf of Mexico, and outside the jurisdiction of the Texas Open Beaches Act and the Coastal Management Program.
Key details: Coastal jurisdiction: None — inland city. Distance to Gulf: Approx. 165 miles. Counties: Williamson (primary), Travis. Applicable framework: Floodplain + Stormwater (Art. 12.16).
N/A — no local coastal ordinance. Standard Floodplain Development Permit and Stormwater enforcement (up to $2,000/day) apply to riparian work along Brushy Creek, Lake Creek, and tributaries.
The rules around coastal development in Cedar Park lean permissive, but that does not mean anything goes.
Grading & Drainage
Fill or grading requires a Site Fill/Grading Permit from the Engineering Department; all drainage design must comply with the City of Austin Drainage Criteria Manual as adopted by Cedar Park.
Key details: Permit required (fill/grading): Yes — Site Fill/Grading Permit. Design manual: City of Austin Drainage Criteria Manual. Master Plan adopted: March 28, 2019. Waterway obstruction: Prohibited without approved site plan.
Stop-work order, mandatory restoration, and fines up to $2,000/day for health-and-safety violations under §1.01.009. Unauthorized waterway obstructions must be removed at owner expense.
The Bottom Line
Cedar Park's environmental rules rules are a mixed bag. Some areas are strict, others are relaxed, and the details matter. The best approach is to check the specific rule that applies to your situation rather than assuming Cedar Park is broadly strict or permissive.
These rules come from Cedar Park's publicly available municipal code. For complete penalty schedules, exemption details, and answers to common questions, see the individual ordinance pages throughout this guide.