Looking for a SWPPP consultant in San Dimas, CA? Describe your project once and up to five stormwater consultants who work in San Dimas and Los Angeles County get back to you with a quote. It's free and there is no obligation.
San Dimas is home to about 33,226 people (2024 Census Bureau estimate), a shrinking community (−4.8% since 2020). With 2,210 people per sq mi, it is a suburban area. Subdivisions and commercial sites here need stormwater permit coverage before grading.
San Dimas at a glance
- Population (Census Bureau estimate, 2024)
- 33,226 (−4.8% since 2020)
- Rank in California
- 226th of 482 cities and towns
- Land area
- 15 sq mi
- Population density
- 2,210 people per sq mi (suburban)
- Type
- City (San Dimas city)
- Main county
- Los Angeles County
What to check before hiring in San Dimas
- Permit: in California, check the state construction general permit.
- Local rules: San Dimas may add its own erosion control permit.
- Records: keep inspection reports on site.
- Price drivers: site size, phases, inspection frequency and duration.
Useful official resources
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EPA: construction stormwater
Official information and guidance.
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EnviroCert: CPESC
Official information and guidance.
Services available in San Dimas
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SWPPP and permit coverage
Preparation of the SWPPP and notice of intent under the construction general permit.
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Stormwater inspections
Routine and post-storm inspections with reports for the permit.
Frequently asked questions in San Dimas
How much does a SWPPP cost in San Dimas, CA?
It depends on site size, phases and inspections. Describe your project: consultants who serve San Dimas reply with a quote.
How long does it take?
Plans often take days to a couple of weeks, plus the permit review.
What happens at the end?
A notice of termination is filed once the site is stabilized.
Which stormwater consultants will contact me?
Up to five independent stormwater consultants who serve San Dimas and the surrounding area, chosen for the service you need. Your details are shared only with your consent.
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2024) and Gazetteer Files (public domain), imported on 10/31/2026. Figures describe the incorporated place or county as published; they are shown for information only.