first_img Image source: Getty Images Rupert Hargreaves | Saturday, 22nd May, 2021 | More on: POLY PSN UU 3 FTSE 100 dividend stocks to buy Renowned stock-picker Mark Rogers and his analyst team at The Motley Fool UK have named 6 shares that they believe UK investors should consider buying NOW.So if you’re looking for more stock ideas to try and best position your portfolio today, then it might be a good day for you. Because we’re offering a full 33% off your first year of membership to our flagship share-tipping service, backed by our ‘no quibbles’ 30-day subscription fee refund guarantee. We think that when a company’s CEO owns 12.1% of its stock, that’s usually a very good sign.But with this opportunity it could get even better.Still only 55 years old, he sees the chance for a new “Uber-style” technology.And this is not a tiny tech startup full of empty promises.This extraordinary company is already one of the largest in its industry.Last year, revenues hit a whopping £1.132 billion.The board recently announced a 10% dividend hike.And it has been a superb Motley Fool income pick for 9 years running!But even so, we believe there could still be huge upside ahead.Clearly, this company’s founder and CEO agrees. Enter Your Email Address I think owning income shares is a straightforward way to increase my income. So, with that in mind, I’ve been looking for FTSE 100 dividend stocks to add to my portfolio. Here are three blue-chip companies I’d buy for income today. FTSE 100 dividend stocksThe first company on my list is precious metal miner Polymetal International (LSE: POLY). Precious metals have been rising in value recently, which could translate into higher profits for this business.5G is here – and shares of this ‘sleeping giant’ could be a great way for you to potentially profit!According to one leading industry firm, the 5G boom could create a global industry worth US$12.3 TRILLION out of thin air…And if you click here we’ll show you something that could be key to unlocking 5G’s full potential…Indeed, net profit at the group more than doubled last year after a significant increase in gold and silver prices. Off the back of this growth, management hiked the company’s dividend by more than 100%. At current levels, the stock offers a dividend yield of 5.4%. I wouldn’t rule out a further dividend increase as precious metals prices increase.Unfortunately, commodity prices can fall as fast as they rise. This means the company may have to cut its dividend if prices fall significantly. That’s always going to be a risk of investing in mining businesses. Still, it would be one of the FTSE 100 dividend stocks I’d buy based on its income potential.Defensive industryUtility companies can be the perfect income stocks. I reckon United Utilities (LSE: UU) fits the bill perfectly. At the time of writing, shares in the water company support a dividend yield of 4.4%. I think that looks attractive in the current interest rate environment. The provision of water and wastewater services is an incredibly defensive industry. Consumers will always need access to this precious commodity. This suggests United will be able to earn steady profits for years to come. The company should also be able to increase profits and its dividends in line with inflation as prices rise.However, the one major challenge the firm faces is regulation. Ofwat essentially controls how much profit water companies are allowed to earn on their assets. If the regulator decides to clamp down and reduce profitability, United may have to cut its payout. Even after taking this significant risk into account, I’d still buy the company for my portfolio, based on its potential.Housing marketThe UK housing market is currently firing on all cylinders. This bodes well for homebuilders like Persimmon (LSE: PSN). This business is currently struggling to meet the demand for new properties, which is an excellent position to be in considering the overall economic environment. City analysts believe the business will earn a net income of £778m in 2021, up from £638m in 2020. This could support a dividend of 236p per share, the highest level of income in five years. That would give a dividend yield of 7.6% on the current share price.This level of income is far from guaranteed, but I think it showcases the company’s potential. Key risks and challenges to growth include a sudden increase in interest rates, which may hit demand for new-build properties. Rising labour costs could also hurt profit margins. Considering the overall outlook for the UK housing market, I’d buy this company for my portfolio of FTSE 100 dividend stocks.  Rupert Hargreaves has no position in any of the shares mentioned. The Motley Fool UK has no position in any of the shares mentioned. Views expressed on the companies mentioned in this article are those of the writer and therefore may differ from the official recommendations we make in our subscription services such as Share Advisor, Hidden Winners and Pro. 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