Powder Coating Wash Water Recycling in Spartanburg and the Upstate
If your Spartanburg-area shop runs an iron phosphate or zirconium pretreatment stage before powder coating and drains that wash water to the sewer, Spartanburg Water treats you as a categorical industrial user and issues an industrial wastewater permit with numerical limits and self-monitoring. A CPR closed-loop system filters and reuses the wash water and pretreatment chemistry, so there is no wash water discharge to permit.
Why are Upstate wash lines getting more attention?
Spartanburg County ranked first of South Carolina's 46 counties in capital investment in 2025, with about $3.5 billion in new projects, plus expansions at FabLogix and ZF Chassis Systems in Duncan and at Auria Solutions, which supplies BMW and Honda (Spartan Weekly). New and expanding plants pull in fabricators and coaters who need finishing capacity, and every new wash line starts a conversation with the local sewer utility.
Do you need a Spartanburg Water permit for your pretreatment washer?
Usually, yes. Spartanburg Water's Industrial Pretreatment Program, run by the Spartanburg Sanitary Sewer District, says a business governed by EPA categorical pretreatment regulations will be a categorical industrial user and will be issued an industrial wastewater permit. Phosphate and zirconium conversion coating both fall under EPA's Metal Finishing Effluent Guidelines (40 CFR Part 433), so a small flow does not exempt a coating shop. Our national guide to powder coating wash water rules covers the federal side.
The steps start with a Preliminary Industrial Discharge Survey, then an Industrial Discharge Permit Application. Permits list numerical limits for parameters of concern and self-monitoring requirements, and permitted users pay monthly administrative charges, laboratory testing costs and surcharges for high-strength wastewater (SSSD fee schedule). The governing rules are the Sanitary Sewer Use Rules and Regulations, revised in September 2021.
Planning to treat wash water on site and then discharge it? Spartanburg Water sends you to the South Carolina Department of Environmental Services (SCDES) for a wastewater construction permit, and wants to see the treatment plans too. Elsewhere in the Upstate, your own sewer authority issues the permit; see our South Carolina wash water guide.
What are your wash water options in Spartanburg?
Option | Who you answer to | What it means for your shop |
Discharge to sewer | Spartanburg Water (SSSD) Industrial Pretreatment Program | Industrial wastewater permit, numerical limits, self-monitoring reports, monthly charges and surcharges |
Treat on site, then discharge | SCDES construction permit plus Spartanburg Water | Treatment system approval on top of the same permit and monitoring |
Haul it off-site | South Carolina hazardous waste rules | Waste characterization (TCLP or process knowledge) and a hauling bill for every load |
CPR closed-loop recycling | No wash water discharge to permit | Water and chemistry are filtered and reused; only filter waste leaves the building |
How does a CPR closed loop work?
Wash: hot, high-pressure spray with a single-step iron phosphate or zirconium cleaner/coater.
Capture: the wash bay floor collects the solution.
Filter and reclaim: solids and oils are removed; the chemistry stays in solution.
Reuse, rinse and seal: clean solution returns to the wand or washer, followed by the rinse and seal your spec calls for.
See spray wand pretreatment systems and single-step stage washers for equipment details.
Can automotive and Caterpillar suppliers in the Upstate use a closed loop?
Yes. We start with the spec or test protocol your customer requires and size the system backward from it. For Caterpillar work, CPR systems run CAT 1E4093 approved chemistry with a phosphate wash, rinse and seal sequence. We'll clean sample panels for free so you can run your own adhesion and corrosion tests before you buy.
Where are CPR Systems running in South Carolina?
CPR closed-loop systems operate in Marietta, in the Upstate, and in Bennettsville and Summerville, and we support powder coaters and fabricators across Spartanburg, Greenville and the I-85 corridor.
What should Spartanburg-area shops do next?
Check your status: if your washer has a phosphate or zirconium stage and drains to the sewer, ask the Industrial Pretreatment Program whether you need a permit.
Planning a new line? Build permit lead time into the schedule, or design the line for zero discharge from day one.
Price your current disposal: add up hauling invoices, sewer surcharges and sampling costs, then compare them in our savings calculator.
Frequently asked questions
Does a small powder coating shop need a permit in Spartanburg?
Usually, yes. Spartanburg Water issues an industrial wastewater permit to any categorical industrial user, and phosphate or zirconium conversion coating makes a shop categorical regardless of flow.
Does switching to zirconium avoid the permit?
No. A 2016 EPA memorandum brought zirconium conversion coating under the same Metal Finishing Effluent Guidelines that cover phosphating (details).
Who regulates pretreatment outside the Spartanburg Water service area?
Your local sewer authority, under South Carolina's pretreatment rules administered by SCDES. Each authority sets its own limits in its sewer use ordinance.
How much would a closed loop save your shop?
Try the savings calculator with your own disposal costs, or request a quote and we'll size a system to your parts. Call 574-233-9111 or email contact@cprsystemsonline.com.
This article is for informational purposes and is not legal or environmental compliance advice. Confirm requirements with Spartanburg Water or your sewer authority.
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