Looking for a SWPPP consultant in North Liberty, IA? Describe your project once and up to three stormwater consultants who work in North Liberty and Johnson County get back to you with a quote. It's free and there is no obligation.
North Liberty is home to about 21,904 people (2024 Census Bureau estimate), a growing community (+6.9% since 2020). With 2,298 people per sq mi, it is a suburban area. Subdivisions and commercial sites here need stormwater permit coverage before grading.
North Liberty at a glance
- Population (Census Bureau estimate, 2024)
- 21,904 (+6.9% since 2020)
- Rank in Iowa
- 27th of 940 cities and towns
- Land area
- 9.5 sq mi
- Population density
- 2,298 people per sq mi (suburban)
- Type
- City (North Liberty city)
- Main county
- Johnson County
What to check before hiring in North Liberty
- Permit: in Iowa, check the state construction general permit.
- Local rules: North Liberty 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 North Liberty
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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 North Liberty
How much does a SWPPP cost in North Liberty, IA?
It depends on site size, phases and inspections. Describe your project: consultants who serve North Liberty 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 North Liberty 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.