Stormwater Management: Moorpark vs Oxnard
How do stormwater management rules compare between Moorpark, CA and Oxnard, CA?
Moorpark has fewer restrictions than Oxnard.
Moorpark, CA
Ventura County
Moorpark's stormwater program under MMC Chapter 15.24 (Stormwater Quality Management) prohibits discharge of pollutants into the storm drain system. Non-stormwater discharges are prohibited. New development must incorporate Best Management Practices (BMPs) for stormwater retention and treatment.
View full Moorpark rules βOxnard, CA
Ventura County
Oxnard enforces stormwater pollution prevention under its NPDES Municipal Separate Storm Sewer System (MS4) permit. Construction sites, commercial properties, and industrial operations must prevent pollutant discharge to storm drains flowing to the Pacific Ocean.
View full Oxnard rules βKey Facts Comparison
| Fact | Moorpark | Oxnard |
|---|---|---|
| Non-Stormwater Discharge | Prohibited | - |
| New Development | BMP plan required | - |
| Construction Sites | Erosion control plan required | - |
| Watercourse Maintenance | Property owner responsibility | - |
| Code Section | MMC Chapter 15.24 (Stormwater) | - |
| Permit | - | Ventura County MS4 NPDES |
| SWPPP Required | - | For sites 1+ acre disturbed |
| LID Required | - | New development must include |
| Penalty | - | Up to $10,000 per day |
Highlighted rows indicate differences between cities.
Moorpark FAQ
Can I wash my car in the driveway in Moorpark?
Car wash water containing soap and chemicals should not be allowed to flow into storm drains. Use a commercial car wash or wash on permeable surfaces where water can be absorbed rather than draining to the street.
What stormwater requirements apply to new construction in Moorpark?
New development must prepare a Stormwater Quality Management Plan with Best Management Practices for onsite retention and treatment. Construction sites need erosion and sediment control plans.
Who is responsible for drainage on my Moorpark property?
Property owners must maintain drainage facilities and keep watercourses free of trash and debris per the stormwater ordinance. Blocked drainage that causes flooding may violate the code.
Oxnard FAQ
What are Oxnard's stormwater rules?
Oxnard prohibits pollutant discharge to storm drains under its NPDES MS4 permit. Construction sites over one acre need SWPPPs. New developments must include Low Impact Development measures.
Where does Oxnard stormwater go?
Oxnard's storm drains flow directly to the Pacific Ocean through channels including the Oxnard Industrial Drain and Santa Clara River estuary. No treatment occurs, making pollution prevention critical.
Do I need a stormwater plan for my construction project?
If your project disturbs one acre or more, you need a SWPPP and General Construction Permit coverage. Smaller projects may still need Best Management Practices per city requirements.
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