Brookings, South Dakota, is home to South Dakota State University, a growing population of roughly 24,000 residents, and a steady mix of commercial, residential, and industrial properties. The city's water infrastructure is managed by the Brookings Municipal Utilities, which enforces cross-connection control and backflow prevention requirements. Every property with a potential cross‑connection—such as irrigation systems, fire sprinklers, boilers, and commercial kitchens—must have a tested and certified backflow assembly at least once per year. This creates a predictable, recurring demand for certified backflow testers.
The market is moderately competitive. While there are a handful of plumbing companies and a few independent testers operating in the area, many property owners still struggle to find timely, reliable testing. Because the city sends annual reminders to property owners, there is a built‑in pipeline of customers who must act. A focused, locally operated backflow testing business can capture a loyal clientele by offering prompt service, digital scheduling, and clear communication. The university campus, retail plazas along 6th Street and 22nd Avenue, and new housing developments near the SDSU Research Park are prime targets.
To perform backflow testing in South Dakota, you must hold a valid Backflow Prevention Assembly Tester (BPAT) certification issued by the South Dakota Department of Environment and Natural Resources (DENR). The certification requires attending an approved training course (often offered by the South Dakota Association of Water and Wastewater Works) and passing a written and practical exam. Recertification is required every three years. Your tester certification card must be carried on site at all times.
Register your business with the South Dakota Secretary of State (SOS) as a sole proprietorship, LLC, or corporation. An LLC is recommended for liability protection. You will also need a State Sales Tax License from the South Dakota Department of Revenue, as backflow testing services are subject to sales tax (currently 4.2% state rate, plus Brookings city/county rate of 2% for a total of 6.2%). Obtain general liability insurance (at least $1 million coverage) and a surety bond if required by your contracts. Workers' compensation insurance is required if you hire employees.
Brookings Municipal Utilities may require you to register as an approved tester with their office. Contact them at 605‑692‑6313 or visit the Utilities office at 520 3rd Street to submit a copy of your certification and insurance certificate. Some larger commercial clients (e.g., SDSU, Hy‑Vee, the Brookings Health System) may have their own vendor registration process. Ensure you have a valid city business license from the City of Brookings Finance Office, which costs approximately $50 per year.
Go to google.com/business and create a profile using your exact business name (e.g., "Brookings Backflow Testing LLC"). Use your physical service area address – if you work from home, ensure it matches your registered location. Choose the category "Plumber" or "Backflow Prevention Service" if available; otherwise use "Service Establishment." Verify by postcard or phone.
Under "Service Area," set Brookings, SD, and include nearby towns such as Volga, Aurora, Bruce, Sinai, and Elkton. Do not set a radius larger than 30 miles initially. You can later expand to Watertown or Sioux Falls.
Create a simple website with pages for "Home," "Backflow Testing Services," "About," "Service Area," and "Contact." Use local keywords naturally in headings and body text: "backflow testing Brookings," "backflow certification South Dakota," "Brookings Municipal Utilities approved testers," "irrigation backflow test Brookings SD." Include your NAP (name, address, phone) in the footer on every page. Add a schema markup for LocalBusiness and Service.
List your business on the following citation sites with consistent NAP: Google Business Profile, Bing Places, Yelp, Nextdoor, Chamber of Commerce (Brookings Area Chamber), Yellow Pages, Angi (formerly Angie's List), HomeAdvisor, and South Dakota Contractor Database. Also register with the Brookings Municipal Utilities approved tester list – that backlink is highly valuable.
Write blog posts tailored to Brookings customers: "Why Brookings Property Owners Need Annual Backflow Testing," "How to Find an Approved Tester in Brookings SD," "Common Backflow Issues in South Dakota Winters." Embed a Google Map of your service area and include photos of local sites. Every article should end with a local call to action.
Join the Brookings Area Chamber of Commerce and get listed on their website. Sponsor a Little League team or a local charity run – you'll get a link from their event page. Reach out to local bloggers or the "Brookings Register" for a small business profile story. Offer a free educational session to the Brookings Home Builders Association or the SDSU Facilities Management.
South Dakota does not regulate backflow testing prices, so you must be competitive yet profitable. Based on market research in Brookings and similar cities:
Offer a discount for early‑bird annual renewal (book by April 1st) or a referral program ($10 off for customer and referrer). Accept credit cards and consider a 2% surcharge for card payments. Always provide a written estimate before work and an itemized invoice afterward.
Run a free GBP audit, analyze your competitors, and track your review growth — all in one platform.
Try BizLaunchIQ Free →