And answering very pointed questions about their own electability. Onstage, the battle to define the Democratic Party should took shape. The socialist senator who fired up his campaign i want to see working people and young people commit to the party in a way that doesnt exist now. Reporter Hillary Clinton, former secretary of state, senator and longtime party powerhouse, still fighting. Senator sanders is the only person who i think would characterize me, a woman running to be the first woman president , as exemplifying the establishment. Reporter on the issues, the clashes came first over campaignfinance and wall street. Kid gets caught with marijuana, that kid has a police record. A wall street executive destroys the economy, 5 billion settlement, no criminal record. Reporter sanders touted his lack of a pack had questions, clinton taking speaking fees from goldman sachs. Clinton fired back. I think its time to end the very artful smear that you and your campaign have been carrying out in recent weeks. And lets talk about the issues. Lets talk about the issues that divide us. We both agree with finance reform. Reporter clinton stance by the afford will correct. Sandor sanders call for a quicker move to universal healthcare. 29 Million People have zero health insurance. Even more who are underinsured, with large deductibles and copayments. Prescription drug prices are off the wall. Reporter clinton under pressure to appeal to progressive voters said her experience makes her more qualified. I have a progressive gets things done. If were going to get into labels, i dont think it was progressive to vote against the brady bill five times. I dont think it was reporter on foreign policy, sanders says he has better job bringing the their vote on the iraq war. One of us voted the right way and one of us didnt. Reporter sanders was trying to prove he could win a general election. Clinton says shes the one. Youve got to be ready on day one. Theres too much unpredictable threat and danger in the world today. Reporter both did come together on one point. On our worst days, i think its fair to say we are 100 times better than any republican. [ applause ] reporter polls show sanders now with a doubledigit lead over clinton in new hampshire, but in South Carolina, that is reversed with clinton leading sanders by almost the same margin. Thank you. Now to the question of how each candidate did tonight. Joining us from petaluma is analyst brian sobel. Who did the better job tonight . Reporter i thought Hillary Clinton actually won the debate if you want to pick a winner and a loser. I thought she had a lot of energy, she was very well prepared. And i think delivered her message quite well. And i thought in contrast, Bernie Sanders lacked a Little Energy tonight. It was clearly a content rich debate. But if youre asking me who had the edge, i think Hillary Clinton did. Lets just say Hillary Clinton wins the nomination. For the sake of argument, how much will this to fight during the primaries hurt her in the general election . Reporter its going to hurt her son, and heres why. She has to fix her positions from the middle to the left even very progressive, to outflank Bernie Sanders. The longer she has to do that, and, Pay Attention to the republicans she needs to go over and grab, that is going to be the thing that hurts her as we start moving through this election cycle. Right now Bernie Sanders is giving clinton a run for her money. What seems to be giving her the most trouble . Is it a trust issue . Reporter yes, trust has something to do with it. The fact that hillary is a known quantity. I think sanders is doing a great job of appealing to young people, to people who have real problems with government right now, who dont feel like they are a part of the american dream. The billionaires and millionaires that Bernie Sanders talks about, being part of the problem resonates with Bernie Sanders support. Hillary clinton has been there and she has taken money from a lot of those people. I think when Bernie Sanders first entered, no one gave him a chance of winning. Do you think, lets say for the sake of argument, he wins new hampshire, does he have a chance to win the nomination . Reporter no. I dont think so. I think he wins new hampshire, hes got a 2 to 1 edge in the state right now but moving onto South Carolina and other states, where clinton has built a huge ground game, and has visited those estates so many times, i think shes going to eventually start pulling away from Bernie Sanders. So my answer is no, he has no chance of winning the nomination. He certainly is pushing her. Absolutely. Reporter its really good for the process. Nobody should be coronated anything, you have to go through a process. This is testing her. On the other side of it, Hillary Clinton being tested this way is good for her too, as she starts moving out. And talks about her progressive its important for her to go through this. Brian sobel, thanks so much. We appreciate it. Super bowl 50 now has three days away, levis stadium just about ready to play host to the denver broncos. And the Carolina Panthers. All over the bay area theres a lot of excitement building for the game. Azenith smith is at santana row in san jose. You found a lot of visitors have arrived now from out of town . Reporter a lot of visitors were at levis stadium earlier to check out the sites. Many of them said they were set headed to San Francisco to go to festivities over there. A lot happening in the south bay too. At santana row, it was cheers to the super bowl, football fans and. Trekkers alike taking part in a super bowl. Blitz hosted by various breweries. Lets be honest, super bowl is in santa clara, not San Francisco. Out of all the events, i was come to santana row. Reporter earlier, the line outside levis stadium to take a picture with the super bowl 50 sign was long. None of the people had tickets, they just wanted to be a part of it. Thats a good one. I like that. Yeah. Reporter and the merchandise flying off the shelves at the Convention Center parking lot. We found some diehard panthers fans from North Carolina. This has been like a dream come true. Our entire season has been unbelievable. We have had so much fun. Reporter this couple stayed with friends in hillsboro, paid 1800 each for end zone seats for the super bowl, thrilled its in the bay area. I love it. The warm, sunny weather. We were so glad because as soon as we came off down the street, always hawes was the sign that said, keep pounding. Felt like home. Reporter these fans from North Carolina are staying at a hotel in walnut creek. They dont have tickets yet, but thats okay. Also okay, business at this waffle shop where there are traffic detours. The owner expects bigger crowds come game day. Yesterday, vernon davis came in and wore his super bowl stuff. The staff got to take pictures, they got to take autographs from vernon, so really excited. Reporter you never know who youre going to see given the players are staying here in the south bay in san jose and santa clara. Besides, stuff happening here at santana row, there are activities at Cesar Chavez Park and san pedro square. Live in san jose, azenith smith, ktvu fox 2 news. Homeland Security Officials are reminding fans that a crackdown is underway on fake super bowl gear. Agents have stepped up enforcement efforts at flea markets and street stands and at retail stores, they say Operation Team player began at the end of the last super bowl to catch counterfeiters. Since then, they have seized 450,000 sports related items and arrested dozens of people. The two teams got down to business today, this was the last day of public practices, the panthers worked out at san jose state this morning. There were told were told that all of cam newtons passes were cut. Meantime, the broncos had their practice at stanford, they pumped of the music really loud to simulate the noise they expect on sunday. The doctor who first brought to life the devastating consequences of concussions in football spoke to a packed crowd in San Francisco tonight. By the time they are 50 your brain has been exposed and hundreds of thousands of blows. There is nothing that could be safe about it. Dr. Bennett omalu was interviewed as a part of city arts and lectures. He was the first first to publish findings of a degenerative condition called cte that he identified in the brains of football players. He is the subject of the current film thats out current starring will smith called concussion. He found that condition caused memory loss, dementia and depression. Dont have a ticket to tonights concert . Dont worry. Weve got an inside look. Tracking your friday forecast, it does call for a bit of a warmup. Mandatory water conservation. Now a serious problem has surfaced. Two investigates has Found Department after department not stemming the tide. For months, has the board been wasting water . Using tens of thousands of gallons beyond restriction. Is the library wasting water . Water has been a key issue in california for four years. Just this week the state extended Emergency Conservation efforts. 2 investigates has learned some departments are failing to meet the requirement to cut back on water use by 25 . Investigative reporter ross palombo has been looking into it and has a story will see only on fox 2. Reporter some simply are not cutting enough. In fact, some are using hundreds of thousands of gallons too much, nearly half 1 million gallons since the summer alone. Why didnt they stop despite a mandatory order . They say they didnt even know the full extent of it until we began looking into it. Were facing the worst drought in that california has ever seen. Reporter year after year of drought. But some parts of San Francisco, from libraries to schools, to peers, have remained remarkably green. Droughts are difficult things. Something is always a fault of the past. Reporter outside several libraries across the city, are parks and gardens and planting, all tied to irrigation meters that have been under mandatory restrictions for more than six months now. Are you taking that seriously . Really seriously. Reporter but documents show six of eight libraries used far more water in november than the city a lot of. Some six times as much. At this branch on ocean avenue, four times more, at this branch of cleveland, and some like this one on terrible, nearly double the amount of water. Is that concerning . Yes, it is. Reporter how long have you known . These particular overages just came to light this month. Reporter records show this isnt the first month. In november these branches went over by 9100 cubic feet or 68,000 gallons of water. 2 investigates has learned they were over again even more the month before. 1002200 cubic feet or 92,000 gallons of water in october and over again and again months before that. In august, were you aware that . Im not aware that all of them have been there since august. We tackle this stuff as quickly as we can. But were like any organization. This is not the only challenge that we have. Reporter but were in a drought right now. I agree about the drought. I think thats a very important thing. Sounds like someone doesnt care. Not taking requirement seriously. Reporter Jennifer Cleary says the city ordered a serious 25 cut to metered irrigation to keep the entire city water usage under state or good levels. Levels that the vast majority of san franciscans are complying with in their private homes. It makes us angry because you have people who are really working hard and doing without to save water. Reporter the library says the more majority of overages are for Public Safety like Power Washing sidewalks for human debris or needles, or for the public good, to protect new plantings or parks like here at the ingleside branch. The plants will die if they are not water heavily. Why did they do that . Why did they cede it to begin with . When they had a consummation requirement. Do you think these numbers are big deal . I do. Reporter so big the San FranciscoPublic UtilitiesCommission Says the library had been notified each and every month and charged double for each gallon it went over. Is it concerning . I think its concerning. I dont think its the only thing happening across the city. Reporter and of course, shes right. 2 investigates has found that at least five peers along the port of San Francisco were also over mandated conservation levels. In december, some like the cruise ship terminal were nearly five times over. In november, 98 had more than two times the limit. Reporter were you surprised . Yes. I was. Reporter surprised because the port didnt know about any of this until 2 investigates requested the numbers. Even though nearly half of its peers with irrigation meters have been over for months after month after month. Going on since september. Did you know that . I did not. Reporter why didnt the port know about this . How many months has the port been wasting water . Well, if all these are legitimate overwatering for irrigation, i would say yes. Reporter the port says its not sure what is happening at any of these sites, not even sure that the numbers are correct. And neither is the very department that is supposed to be regulating them. It really requires an investigation of the site. Reporter report says it was unaware of the problem until we began to investigate. When we asked if leaky hoses like this one at pier 40 were to blame, they said they didnt know where it was coming from. It is disappointing that youve now given me two city departments that arent interested in an issue that has observed the rest of california. Reporter but San Francisco schools have been absorbed by the problem. When you first saw that number, were you concerned . We were concerned. Reporter after also being fined for overages at five schools, the district says it was immediately aware and immediately took action to bring that down to three schools in november. With the water surplus of 8100 cubic feet or more than 60,000 gallons. In just one month at lincoln high school, they cut water waste by 700 . Just changes to Irrigation Systems and behaviors, weve stayed under our allocation meaning that we have used less than the 25 reduction. Reporter not every department has been so studious since mandatory conservation began in july. You said you didnt know until november. Some of these overages, that might be true. Reporter or so successful in stemming the tide of problems. Is the library wasting water . I would say bottom line is things happen at the library that wastewater. Reporter things like Homeless Population living outside of the main branch. They say they have to Power Washing that area every day because of needles and debris there. We asked why they couldnt sweep all of that up. They say its a health issue. The library said it has found three leaky pipes or sprinklers at three branches and fix them but one of those branches is still showing overages according to the data we have. Frank and julie, remember its not just the 500,000 gallons since summer. The real issue here is that they didnt know about this for months until we brought it to their attention. They didnt know the extent of the problem. Its good they know it now. Ross, thank you. If you have a story for 2 investigates, we want to hear from you. Email 2 investigates at ktvu. Com or call us at 510874 0222. Tracking a few clouds but overall weve got a nice looking day in store for you, bay area friday, a lot of clouds moving in off the pacific. Everything is going north. This would be a heck of the system if it had a trajectory like the jet stream had a couple months ago. This system doesnt have the support of a jet stream over our latitude so its going to end up north bus and that sets us up with highpressure and sinking air. As the air sinks, it warns and as it thinks it was offshore and temperatures get up into the 70s by the weekend. Well talk more about that. As we head into tomorrow, looking at overnight lows in the low 40s, already 45 in santa rosa, 46 at concord, there will be valley fog, bits of it. More sunshine than we had today. Noticeably warmer, some mid60s on the high and tomorrow. So a nicelooking day tomorrow. The forecast model, a Little Valley fog in the morning, so showing at the clouds, very little going on. There is your friday afternoon, coastal fog wants to come back to the coast on friday afternoon. But then right after that, offshore and really starts to warm. So no rain is forecast. Thank you, bill. Big waves making for a surfer paradise. Conditions out there today were in the top 10. Why arent they holding the competition . Why the famous surf contest is sidelined. Also, the warriors pay a special visit to the white house to celebrate their nba championship. Oooh, i think i saw dessert but you just had a big lunch it wasnt that big. Steve hey come back here steven, stay strong whwhats that . You. You want me to eat you . Honey, he didnt say that he did very quietly. Yyou cant hear from back there dont fight your instincts with each for 150 calories or less, try our chocolatey brownies, tangy lemon bars and creamy cheescakes fiber one. Go on, have one. A judge set bail at 5 million for a homeless man accused of stabbing a chp officer in San Francisco. Ktvus Tara Moriarty was in court today as