Best Lawn Care
100/100 ✓ MO Certified Backflow Tester Verified #34-11683 ★ 4.9 (979 reviews) 3 certified testers Backflow Testing
Verified Oct 2026 · Unclaimed listing
City of O'Fallon Utility Services: backflow testing rules
Serves O'Fallon, MO. Every point below comes from City of O'Fallon Utility Services's own pages, linked; check your notice for your own deadline.
Who must test
- Devices are required on all irrigation systems, fire sprinkler systems and commercial service lines. Source.
- Tested annually by a Missouri certified tester. Source.
Notices and deadlines
- No mailed notice is described. Source.
How the report is filed
- Email backflow@ofallonmo.gov or fax 636-379-5618; no portal. Mailing address line was not captured in the page text. Source.
Fees
- Charged if the report is not received by June 1. Source.
Approved testers
- City points to the Missouri DNR list. Source.
Program
- Page titled Backflow Testing for Irrigation Systems; City Ordinance 1592. Source.
Read October 6, 2026. Program page: ofallon.mo.us.
Certified backflow testers near O'Fallon
Pro Outdoor
100/100 ✓ MO Certified Backflow Tester Verified #34-12921 ★ 4.7 (756 reviews) 25 certified testers Backflow Testing
Verified Oct 2026 · Unclaimed listing
Lawn Authority
100/100 ✓ MO Certified Backflow Tester Verified #34-10719 ★ 4.8 (104 reviews) 2 certified testers Backflow Testing
Verified Oct 2026 · Unclaimed listing
Harvestowne Irrigation
100/100 ✓ MO Certified Backflow Tester Verified #34-9317 ★ 4 (26 reviews) 14 certified testers Backflow Testing
Verified Oct 2026 · Unclaimed listing
Metro Lawn Sprinklers
100/100 ✓ MO Certified Backflow Tester Verified #34-9140 ★ 4.9 (851 reviews) 17 certified testers Backflow Testing
Verified Oct 2026 · Unclaimed listing
Premier Irrigation & Lighting
100/100 ✓ MO Certified Backflow Tester Verified #34-11897 ★ 3.7 (21 reviews) 8 certified testers Backflow Testing
Verified Oct 2026 · Unclaimed listing