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Backflow testing in Merrillville, IN

25 backflow testing businesses work within 25 miles of Merrillville, 3 of them based in town. Every one has testers on Indiana's certified backflow tester roster.

25 businesses within 25 miles
9 for-hire testers based in Merrillville

Certified backflow testers near Merrillville

TLC Plumbing, INc.

100/100
✓ IN Certified Backflow Tester Verified #BF20-6843 ★ 4.2 (112 reviews) 3 certified testers Backflow Testing

235 N Lindberg St, Griffith, IN 46319 · 8 mi from Merrillville

Call (219) 922-6214 Details Website

Verified Oct 2026 · Unclaimed listing

Rainmaker Irrigation

100/100
✓ IN Certified Backflow Tester Verified #BF16-5445 ★ 4.8 (266 reviews) 3 certified testers Backflow Testing

9928 Express Dr, Highland, IN 46322 · 10 mi from Merrillville

Call (219) 934-0000 Details Website

Verified Oct 2026 · Unclaimed listing

Arctic Eng

90/100
✓ IN Certified Backflow Tester Verified #BF25-9165 ★ 5 (3 reviews) Backflow Testing

8410 Minnesota St #5, Merrillville, IN 46410 · under 1 mile from Merrillville

Call (219) 947-4999 Details Website

Verified Oct 2026 · Unclaimed listing

Keough Mechanical

90/100
✓ IN Certified Backflow Tester Verified #BF06-2902 ★ 4.4 (7 reviews) Backflow Testing

2046 E 88th Dr, Merrillville, IN 46410 · under 1 mile from Merrillville

Call (219) 769-8471 Details Website

Verified Oct 2026 · Unclaimed listing

The Plumber Inc.

90/100
✓ IN Certified Backflow Tester Verified #BF17-5893 ★ 4.6 (98 reviews) Backflow Testing

1280 N Indiana Ave, Crown Point, IN 46307 · 3 mi from Merrillville

Call (219) 663-7608 Details Website

Verified Oct 2026 · Unclaimed listing

LGS Plumbing, INC

90/100
✓ IN Certified Backflow Tester Verified #BF01-1903 ★ 4.5 (24 reviews) Backflow Testing

1110 E Summit St, Crown Point, IN 46307 · 3 mi from Merrillville

Call (219) 663-2177 Details Website

Verified Oct 2026 · Unclaimed listing

Rauer Plumbing Inc

100/100
✓ IN Certified Backflow Tester Verified #BF24-8642 ★ 4.4 (32 reviews) 2 certified testers Backflow Testing

9515 Indianapolis Blvd #6d, Highland, IN 46322 · 10 mi from Merrillville

Call (219) 924-8600 Details Website

Verified Oct 2026 · Unclaimed listing

Salyer Plumbing, Inc.

100/100
✓ IN Certified Backflow Tester Verified #BF99-1538 ★ 4.3 (21 reviews) 3 certified testers Backflow Testing

2209 E 165th St, Hammond, IN 46320 · 13 mi from Merrillville

Call (219) 931-3894 Details Website

Verified Oct 2026 · Unclaimed listing

V&L Plumbing, Inc.

90/100
✓ IN Certified Backflow Tester Verified #BF06-2897 ★ 4.8 (293 reviews) Backflow Testing

13791 Alexander St, Cedar Lake, IN 46303 · 10 mi from Merrillville

Call (219) 558-0555 Details Website

Verified Oct 2026 · Unclaimed listing

Action Plumbing

90/100
✓ IN Certified Backflow Tester Verified #BF13-4834 ★ 4.8 (311 reviews) 2 certified testers Backflow Testing

13729 Wicker Ave, Cedar Lake, IN 46303 · 11 mi from Merrillville

Call (219) 365-1811 Details Website

Verified Oct 2026 · Unclaimed listing

Hines & Son, Inc.

90/100
✓ IN Certified Backflow Tester Verified #BF22-7773 ★ 4.7 (83 reviews) Backflow Testing

1272 Horse Prairie Ave, Valparaiso, IN 46385 · 12 mi from Merrillville

Call (219) 464-8938 Details Website

Verified Oct 2026 · Unclaimed listing

Area Plumbing

90/100
✓ IN Certified Backflow Tester Verified #BF12-4567 ★ 4.1 (71 reviews) Backflow Testing

7219 White Oak Ave, Hammond, IN 46324 · 13 mi from Merrillville

Call (219) 845-1411 Details Website

Verified Oct 2026 · Unclaimed listing

Vega's Landscaping

90/100
✓ IN Certified Backflow Tester Verified #BF19-6502 ★ 4.7 (56 reviews) 2 certified testers Backflow Testing

79 W U.S. Hwy 6, Valparaiso, IN 46385 · 13 mi from Merrillville

Call (219) 476-4300 Details Website

Verified Oct 2026 · Unclaimed listing

Indiana American Water: backflow test rules

  • Who must test. All non-residential customers must install an approved backflow prevention device where state rules require it and have it tested annually. Source.
  • Notices and deadlines. After a failed test is submitted, the customer is notified through BSI Online and has no more than 30 days to repair or replace the device and submit a passing result. Source.
  • How the report is filed. Backflow device test submittal is handled by Indiana American Water's vendor BSI Online (bsionline.com, 1-800-414-4990). Source.
  • If a test is missed. Failure to submit a passing test could result in termination of water service; the program page says disconnection follows repeated requests from the Cross Connection Department. Source.

Everything about Indiana American Water's backflow program

Independent certified testers based in Merrillville

Testers Indiana's roster lists without a company. Names, certificate numbers and phones as the state publishes them.

TownTesterCertificatePhone
Merrillville Christopher Brill BF25-9246
Gabriel Cabrera BF26-9806
Richard K Culbreth BF25-9079
Joshua Daniels BF26-9808
Jennifer Larkins BF25-9001
Jacob E McDonald BF25-9336
Joshua Ritter BF26-9481

Never miss your annual backflow test

Most water utilities require the backflow assembly on an irrigation, fire or commercial line to be tested every year, and a missed test can mean a shutoff notice. Tell us when yours was last tested in Merrillville and we'll text you a month before it is due, with certified local testers ready to book.

Free. One text before your test is due. No spam, cancel anytime. Privacy

Backflow testing questions in Merrillville

Who can test a backflow preventer in Merrillville?

A tester certified by Indiana Department of Environmental Management. Your water utility may also keep its own list of testers allowed to file reports. In Merrillville, see Indiana American Water's rules below.

How many certified backflow testers are based in Merrillville?

9 testers who test for the public list Merrillville as their base on Indiana's roster, and 25 testing businesses are within 25 miles.

How often do I need a backflow test?

Most utilities require a test when the assembly is installed and then every year. Your utility's notice gives the due date and how the tester files the report.

Roster: Indiana Department of Environmental Management, read October 6, 2026.

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