How Allentown Handles Environmental Rules: A Practical Guide

Allentown maintains 106 local ordinances across all categories, and 5 of those deal specifically with environmental rules. Here is a breakdown of what the city actually requires, what is prohibited, and where Allentown falls on the strict-to-permissive spectrum compared to other cities.

Flood Zones

Allentown enforces FEMA flood zone development standards. Properties in Special Flood Hazard Areas face elevation requirements, flood insurance mandates, and construction restrictions.

Key details: SFHA Zones: Elevation required. Insurance: Required in flood zones. Floodway: No fill or structures. Topic: Flood Zones.

Construction below flood elevation: retroactive compliance required, fines $500 to $5,000. Floodway encroachment: removal order. Failure to maintain flood insurance: lender force-placement at higher cost.

This is one of the stricter rules in Allentown's municipal code. If you are unsure whether your situation complies, it is worth checking with the city before proceeding.

Erosion Control

Allentown requires erosion and sediment control measures during all land-disturbing activities. Silt fences, erosion blankets, and stabilized construction entrances are standard requirements.

Key details: When Required: All land disturbance. Common Measures: Silt fence, wattles. Stabilization: Required post-construction. Topic: Erosion Control.

Missing erosion controls: stop-work order and fines $250 to $2,500. Sediment discharge to waterways: fines $1,000 to $25,000 per day. Failure to stabilize: daily fines until corrected.

Stormwater Management

Allentown requires stormwater management for new development and significant property modifications. Runoff must be controlled on-site through retention, detention, or infiltration systems.

Key details: New Development: Stormwater plan required. Runoff Control: On-site retention. Maintenance: Owner responsibility. Topic: Stormwater.

Failure to implement stormwater plan: stop-work order. Illicit discharge to storm drains: fines $500 to $10,000. Maintenance failures: notice and fines after non-compliance.

Grading & Drainage

Allentown requires grading permits for significant earth-moving work. Drainage must not redirect water onto neighboring properties. Proper grading prevents erosion and flooding.

Key details: Permit Threshold: 50 to 100 cubic yards. Neighbor Drainage: Cannot redirect water. Retaining Walls: Permit if over 4 feet. Topic: Grading Drainage.

Unpermitted grading: stop-work order and fines $250 to $2,500. Redirecting drainage to neighbors: corrective action required. Slope failure from improper grading: liability and remediation costs.

Coastal Development

Allentown regulates development near waterways, lakes, and riparian areas through buffer zones and environmental review. Projects near water features may require additional permits.

Key details: Waterway Buffer: 25 to 100 feet. Wetlands: Federal permit required. Floodplain: FEMA restrictions apply. Topic: Coastal Development.

Building in buffer zone without permit: stop-work and fines $500 to $5,000. Wetland violations: federal fines up to $25,000 per day. Unpermitted streambank work: restoration orders.

The Bottom Line

Allentown'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 Allentown is broadly strict or permissive.

This guide is based on Allentown's current municipal code. Local rules can and do change, so check the individual ordinance pages for the latest details, penalties, and FAQs.