Environmental Rules in San Bernardino, CA: What Residents Actually Need to Know
If you live in San Bernardino or are thinking about moving there, environmental rules are one of those things you probably won't think about until they affect you directly. San Bernardino has 4 specific rules on the books covering different aspects of environmental rules, and some of them might surprise you.
Erosion Control
San Bernardino requires erosion and sediment controls on all grading and construction sites. Projects over 1 acre trigger the State Construction General Permit and a Stormwater Pollution Prevention Plan (SWPPP).
Key details: SWPPP Threshold: 1 acre disturbed soil. General Permit: Order 2022-0057-DWQ. Rainy Season: October 1 to April 30. PM10 Dust Rule: SCAQMD Rule 403. Hillside Trigger: 10% slope.
Contact your local code enforcement office for specific penalty information.
Compared to other cities, San Bernardino takes a harder line on erosion control. The enforcement and penalty structure reflects that.
Stormwater Management
San Bernardino regulates stormwater under its MS4 NPDES permit through the Santa Ana Regional Water Quality Control Board. Illicit discharges are prohibited and LID features are required for qualifying development.
Key details: Permit Authority: Santa Ana RWQCB MS4 NPDES. LID Retention: First 3/4 inch rainfall. SWPPP Threshold: 1 acre construction. Max Daily Penalty: 25,000 dollars (Water Code 13385). Receiving Water: Santa Ana River watershed.
Contact your local code enforcement office for specific penalty information.
This is not one of those rules that cities tend to ignore. San Bernardino actively enforces its stormwater management requirements.
Grading & Drainage
San Bernardino requires grading permits for excavation or fill over 50 cubic yards or cut/fill over 3 feet. Positive drainage away from structures and downstream neighbors is required under the California Building Code.
Key details: Grading Permit Trigger: 50 cu yd or 3 ft cut/fill. Foundation Drainage: 6 inch fall in 10 feet. Retaining Wall Permit: Over 4 ft height. Slope Trigger: Steeper than 3:1. Drainage Law: Keys v. Romley reasonableness.
Contact your local code enforcement office for specific penalty information.
Flood Zones
San Bernardino participates in the NFIP and regulates development in FEMA flood zones. Structures in Zone A or AE must meet base flood elevation standards; floodplain permits required.
Key details: NFIP Participation: Active NFIP community. Key Flood Areas: Santa Ana River, Warm Creek, City Creek. Freeboard Required: BFE plus 1 foot. Substantial Improvement: 50% of structure value. Regional Agency: SB County Flood Control District.
Contact your local code enforcement office for specific penalty information.
This is one of the stricter rules in San Bernardino's municipal code. If you are unsure whether your situation complies, it is worth checking with the city before proceeding.
The Bottom Line
San Bernardino is tougher than many cities when it comes to environmental rules. Out of the 4 rules covered here, 3 are rated strict. If you are a homeowner, renter, or business owner in San Bernardino, take the time to understand these requirements before they become a problem. Most violations come with fines, and some repeat violations can escalate.
Keep in mind that San Bernardino can amend these rules at any council meeting. For the most current version of any rule mentioned here, check the specific ordinance page, where we track updates as they happen.