How often does a backflow preventer need to be inspected?

Most backflow preventers should be tested once a year by a licensed plumber. Annual testing helps ensure safe drinking water and keeps the valve working as designed. In Milwaukee and Waukesha, we can confirm your city’s specific schedule during the visit. If you’ve had repairs or notice pressure issues, test sooner. A technician will confirm the timing on site.

Quick checks:

• Look for a tag or sticker showing the last test date.
• Plan a yearly test.
• Retest after repairs or a failed test.

Updated: 2025-12-30 00:00:00

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