Compared to the drought anxieties plaguing California, New York City’s water supply is richly abundant — but at a high price.

In the last 15 years alone, the cost of water in New York, which qualifies as some of the best water for such a large city, has increased by 300 percent.

These illuminating facts (and answers to such questions as “does running a dishwasher save more water than doing the dishes by hand?”) can be found in “The Cost of Our Water,” a project from WNYC and City Limits that highlights New York City’s rising cost of water. The week-long series, launched yesterday, examines the $10 billion worth of federally mandated infrastructure projects that will only further increase the price of water, and the impact on both the city and upstate New York.

Because the city’s water reservoirs are upstate, tensions between state and city have increased and the cost of water is growing faster than property taxes and labor costs for rent-regulated buildings.

The multimedia effort — think maps, quizzes — depicts different facets of NYC water inflation, from analyzing why water pressure is an affordable housing issue to giving more insight into where that city water comes from.

“The Cost of Our Water” is also intended to educate New Yorkers on their water supply so they can get more active with policymakers and advocates when it comes to federal water quality mandates and taking their taps for granted.