Looking for a SWPPP consultant in Sunnyside, WA? Describe your project once and up to five stormwater consultants who work in Sunnyside and Yakima County get back to you with a quote. It's free and there is no obligation.
Sunnyside is home to about 16,317 people (2024 Census Bureau estimate), a stable community (−0.4% since 2020). With 2,161 people per sq mi, it is a suburban area. Subdivisions and commercial sites here need stormwater permit coverage before grading.
Sunnyside at a glance
- Population (Census Bureau estimate, 2024)
- 16,317 (−0.4% since 2020)
- Rank in Washington
- 68th of 281 cities and towns
- Land area
- 7.6 sq mi
- Population density
- 2,161 people per sq mi (suburban)
- Type
- City (Sunnyside city)
- Main county
- Yakima County
What to check before hiring in Sunnyside
- Permit: in Washington, check the state construction general permit.
- Local rules: Sunnyside 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 Sunnyside
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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 Sunnyside
How much does a SWPPP cost in Sunnyside, WA?
It depends on site size, phases and inspections. Describe your project: consultants who serve Sunnyside 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 Sunnyside 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.