Grease Trap Cleaning in Charleston, SC: Cost, Rules & Top Companies (2026)
Running a commercial kitchen in Charleston? Staying on top of grease trap cleaning keeps you out of a sewer backup and compliant with South Carolina's FOG rules. Here's what it costs in Charleston, how often you're required to clean, the permit and regulation basics, and the local companies that handle it.
What Grease Trap Cleaning Costs in Charleston
Charleston prices near the national baseline; dense provider competition across the metro keeps rates competitive.
| Trap / interceptor size | Typical cost per service |
|---|---|
| Small trap (under 50 gal) | $115 – $240 |
| Medium trap (50–500 gal) | $150 – $475 |
| Large interceptor (500–1,500 gal) | $400 – $1,200 |
| Large interceptor (1,500+ gal) | $475 – $2,500 |
Typical ranges per service — your price depends on trap size, accessibility, and frequency. Recurring contracts usually run 15–30% below one-off rates. Estimate yours with the cost estimator or see the full pricing guide.
How Often You Must Clean It in Charleston
At least quarterly, or as determined by a CWS inspector (under CWS Grease Interceptor Standards (100 mg/L FOG discharge limit)). The industry-standard 25% rule applies either way: clean before fats, oils, and grease reach a quarter of your trap's capacity, because past that point grease passes straight through to the sewer. High-volume kitchens (fryers, BBQ, seafood) often need service more often than the minimum.
Charleston Grease Trap Requirements, Permits & Penalties
| Program | Charleston Water System Grease Trap and Interceptor Standards Program (official page) |
| Governing code | CWS Grease Interceptor Standards (100 mg/L FOG discharge limit) |
| Permit / registration | Grease trap/interceptor application with plans and specs; $30 application + $70 inspection fee |
| Penalties | No published fine schedule; violations get a written compliance notice (up to a 3-month deadline) before enforcement action |
Always get a signed manifest at every service and keep your records — that's the proof inspectors ask for. For the full South Carolina breakdown (hauler licensing, record retention, state penalties), see the South Carolina grease trap regulations guide.
Top Grease Trap Cleaning Companies in Charleston
Screened companies serving Charleston and the surrounding metro:
- Oil and Grease Management · 5.0★ · (843) 278-5528
- GreaseMan Services Inc. · 5.0★ · (843) 278-5528
- Charleston Grease Trap Services · 5.0★ · (843) 278-5528
- Zoom Drain of Charleston · 4.9★ · (843) 501-7065
See all grease trap companies in Charleston → or get free quotes from several at once.
Frequently Asked Questions
How much does grease trap cleaning cost in Charleston?
In Charleston, expect roughly $150–$475 for small-to-medium traps and $400–$1,200 for larger interceptors per service. Charleston prices near the national baseline; dense provider competition across the metro keeps rates competitive. Get 2–3 local quotes to compare — it's free.
How often do I have to clean my grease trap in Charleston?
At least quarterly, or as determined by a CWS inspector Regardless of the calendar, clean before FOG and solids reach 25% of capacity — past that, grease escapes to the sewer, which is what triggers violations.
Do I need a permit for a grease trap in Charleston?
Grease trap/interceptor application with plans and specs; $30 application + $70 inspection fee. See the South Carolina regulations guide for details.
What are the penalties for grease trap violations in Charleston?
No published fine schedule; violations get a written compliance notice (up to a 3-month deadline) before enforcement action Keep a signed manifest from every cleaning and your maintenance records on file — that's what inspectors ask for first.
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