Sandra Rowland
Senior Vice President and Chief Financial Officer at Xylem
Thank you, Patrick. Please turn to slide four, and I'll cover our Q3 results in more detail. Revenue grew 2% organically compared to the prior year. Utilities, our largest end market, was down 5% despite continuing strong demand. The decline was driven by supply chain impacts on order conversion, especially chip shortages, slowing M&CS deliveries. Industrial was up 11%, led by continued growth in Emerging Markets and Western Europe.
Commercial grew 10%, led by the ongoing recovery in the United States, while residential, our smallest end market, was up 4%. Geographically, Emerging Markets was up high single digits, with particular strength in Eastern Europe and Latin America. Western Europe was up mid-single digits, while the U.S. declined modestly. As Patrick mentioned, the team delivered exceptional organic orders growth of 20%, which was broad-based across all segments and regions. In fact, year-to-date order volume is higher at this point of the year than in any previous year in company history. M&CS led the way with nearly 40% -- 42% orders growth, driven by large smart metering contract wins, the impact of longer lead times and pent-up demand from a COVID-19-impacted prior year.
We're exiting the quarter with an overall backlog of 34%. And as expected, we are seeing positive momentum on price realization, which will continue ramping through Q4 and into 2022. Looking at other key financial metrics. Margins were above our forecasted range, with EBITDA margins coming in at 17.9%, reflecting strong productivity and good cost control by the team. Year-over-year, EBITDA margin contracted 30 basis points as inflation and strategic investments were largely offset by productivity, price realization and cost containment. Earnings per share in the quarter was $0.63. Please turn to slide five, and I'll review our segment performance for the quarter. In Water Infrastructure, orders were up 9% on strength in wastewater transport applications in the U.S. and Western Europe. Revenues were up 2% organically.
Wastewater Utilities were down modestly, mostly due to delays in ocean shipping. Industrial demand was broad-based across all regions. Regionally, Emerging Markets delivered high single-digit growth, led by increasing industrial dewatering activity. Western Europe was also up, driven by resilient wastewater opex spending and recovery in industrial applications. The U.S. was down modestly due to the shipping delays I just mentioned. EBITDA margin expanded over the prior year as strong productivity savings, price realization and volume leverage more than offset inflation and investments.
Please turn to slide six. In Applied Water, orders were up 17% organically in the quarter on broad industrial strength and commercial recovery. Revenue grew 8% in the quarter from continued commercial momentum and industrial growth in most regions. Residential growth moderated slightly due to volume constraints. Geographically, the U.S. and Western Europe both contributed 6% growth due to the uplift from commercial and industrial. Emerging Markets were up 13% on continued strength in China and gains in Eastern Europe. Segment EBITDA margin contracted 60 basis points compared to the prior year as inflation and investments more than offset productivity benefits and price realization. And now please turn to slide seven, and I'll cover our Measurement & Control Solutions segment. In M&CS, orders were up 42% organically, as I mentioned a moment ago. Our M&CS backlog now stands at roughly $1.6 billion. The bidding pipeline remains very active as customer demand for advanced digital technologies accelerates. Organic revenue was down 5%, which is a tangible effect of chip shortages.
Water applications were down modestly as growth in our test and assessment services businesses largely offset lower sales from smart metering. Due to the digital composition of our metrology portfolio, it has a greater exposure to chip shortages. By geography, Western Europe was up 1%, while Emerging Markets was flat. The U.S. was down mid-single digits. Segment EBITDA margin in the quarter was down 60 basis points compared to the prior year as volume declines from component shortages and higher inflation offset productivity and price realization. And now let's turn to slide eight for an overview of cash flows and the company's financial position.
Our financial position continues to be very strong. We closed the quarter with $1.3 billion in cash after paying down $600 million of debt in the third quarter. Free cash flow conversion was 57% in the quarter, in line with our expectations, and we continue to expect full year free cash flow conversion of 80% to 90%. Net debt-to-EBITDA leverage was 1.3 times at the end of the quarter. And now please turn to slide nine, and I'll turn the call back over to Patrick.