Looking for a SWPPP consultant in Olympia, WA? Describe your project once and up to three stormwater consultants who work in Olympia and Thurston County get back to you with a quote. It's free and there is no obligation.
Olympia is home to about 56,271 people (2024 Census Bureau estimate), a growing community (+1.6% since 2020). With 3,088 people per sq mi, it is a suburban area. Subdivisions and commercial sites here need stormwater permit coverage before grading.
Olympia at a glance
- Population (Census Bureau estimate, 2024)
- 56,271 (+1.6% since 2020)
- Rank in Washington
- 24th of 281 cities and towns
- Land area
- 18 sq mi
- Population density
- 3,088 people per sq mi (suburban)
- Type
- City (Olympia city)
- Main county
- Thurston County
What to check before hiring in Olympia
- Permit: in Washington, check the state construction general permit.
- Local rules: Olympia 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 Olympia
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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 Olympia
How much does a SWPPP cost in Olympia, WA?
It depends on site size, phases and inspections. Describe your project: consultants who serve Olympia 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 three independent stormwater consultants who serve Olympia 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.