Carson City – September 21, 2026 -- Property owners in Carson Valley and Reno are being reminded that annual backflow testing is required in most Northern Nevada jurisdictions to prevent contaminated water from entering clean drinking supplies.
Backflow devices stop pollutants from reversing into drinking water lines
A HelloNation article explains that backflow devices are installed to block contaminated water from irrigation systems, fire sprinklers, or industrial equipment from flowing backward into a home's plumbing or the municipal water supply. Internal valves inside these devices can wear out, corrode, or fail over time, often without any visible warning signs.
Most local jurisdictions mandate testing at least once a year
Annual inspections are designed to catch worn components, leaks, or pressure irregularities before they escalate into larger problems. Documented testing also demonstrates compliance with municipal codes, which can reduce a property owner's liability if a contamination incident occurs. Skipping required testing can result in compliance violations, fines, and unplanned repair costs.
Seasonal temperature swings add extra stress on valves in Carson Valley and Reno
The article notes that fluctuations in water pressure and seasonal temperature changes place additional strain on valve components in the region, making consistent inspection schedules and prompt repairs especially important. Backflow devices are commonly found on irrigation systems, commercial plumbing connections, and fire sprinkler lines, and a sudden pressure drop or surge can allow water to reverse direction if a valve fails.
Certified technicians simulate pressure changes to check valve performance
During testing, technicians use specialized equipment to measure how well valves function and to simulate pressure fluctuations. The article also flags auxiliary systems -- including decorative fountains and cooling units -- that may require their own backflow device and inspection.
Tim Fessler and Dave Super, Plumbing Experts of Carson City, Nevada, are featured in the HelloNation article, which recommends keeping detailed maintenance records to streamline regulatory reviews and document system performance history. Contaminated water may not be immediately noticeable but can affect drinking water, cooking, cleaning, and appliance performance, according to the article.