Kettleman City, California (CNN)  -- Spring in California's San Joaquin Valley is seemingly idyllic, with rolling hills and miles of fruit orchards. But what's happening in the small town of Kettleman City has people scared.





In the past three years, 10 babies in Kettleman City, California, have been born with birth defects, including cleft palates and heart problems. Four cases were reported in 2008 and there was another possible case that same year.   According to the California Department of Public Health and California Birth Defects Monitoring Program, those four cases in Kettleman City are higher than expected. Nationally, the Birth Defects Monitoring Program lists one out of every 33 babies as born with a birth defect.





Three infants have died, including Maria Saucedo's daughter, Ashley.





"It's such a small town and such a large problem. We want to give our children life, not death," said Saucedo. "When Ashley was born, the doctors told me that there was something wrong with her. They told me that Ashley wouldn't live more than one or two months."





Despite a weak immune system, Ashley managed to live for almost 10 months. She died of a blood infection on January 24, 2009. Through tears, Saucedo said, "I apologized for not taking her earlier to the hospital, but the doctors told me that it wasn't my fault, that with babies like this, this is what happens."





But Saucedo wants to know why it happened to her and the other mothers living here.





Kettleman City is one of the poorest towns in the state. Maricela Mares Alatorre, who works as a teacher, grew up there.





"It's a really small town," said Alatorre. "Most people have been here for generations. I like to call it the Mayberry feeing with a Latino twist."





But unlike Mayberry, the 1,500 people of this farming community have no grocery store, no high school and few sidewalks. The town, which is surrounded by farms, is polluted. It is plagued with poor air quality, unsafe drinking water and exposure to pesticides. Kettleman City's water does not meet EPA standards, because of  high levels of naturally occurring arsenic. . The state and EPA have found poor air quality throughout the San Joaquin Valley. Kettleman City is surrounded by agriculture and is exposed to heavy use of pesticides. Because of its location right off Highway 41, there also is a lot of emissions pollution.





The major concern for many people in Kettleman City, however, lies just four miles outside town. It is the largest toxic waste site west of the Mississippi. The site is operated by the waste disposal firm Waste Management, which said that last year 400,000 tons of hazardous waste -- including lead and cancer-linked PCBs found in plastics -- was dumped there. Every day, hundreds of trucks pour in and out.





Some residents believe the birth defects could be linked to the waste site.





Waste Management has said its Kettleman Hills facility operates safely and fully protects human health and the environment. The site has been inspected by four separate local, state and federal entities since 2007. All concluded the facility operates safely and does not affect local residents. Waste Management has agreed to cooperate with investigations into the community's concerns.  Tension between Waste Management and the community goes back decades. Residents led by the Rev. Jesse Jackson waged a battle against Waste Management in 1991 to stop a toxic waste incinerator from being built. They won.





Now the residents of Kettleman City are fighting again, this time over a proposed waste site expansion, for which their local officials voted.





For Alatorre, environmental activism is in her genes.





"I'm a second-generation activist," she said. Alatorre has been fighting against the waste site expansion and fighting for a state health investigation into the birth defects for nearly two years. She and others are upset that the county voted to expand the waste site before a full investigation was completed.





"We don't want an expansion because we feel like there are a lot
How many babies have birth defects? What number of babies have eben born with defects?
10 one out of every 33
question: How many babies have birth defects?, answer: 10 | question: What number of babies have eben born with defects?, answer: one out of every 33