Feel like a nice cool glass of ice water? Before you take a sip, you might want to take a quick tour of your home. How\u2019s the fill valve in your toilet? Do you have a vacuum breaker on your outside spigots? What about your boiler?<\/p>\n
Without the right plumbing bits and pieces in place, you could be at risk of drinking toilet water, sipping lawn fertilizers or slurping hazardous chemicals. If they aren\u2019t protected, cross connections between the drinking water in your home and nonpotable water sources can mean that dirty water gets mixed with the clean. It might take as little as a change in water pressure.<\/p>\n
And it\u2019s not just in your home. Backflow can happen almost anywhere \u2013 from schools to restaurants to water treatment plants.<\/p>\n
A review of state records by I-News at Rocky Mountain PBS shows that throughout Colorado, hazardous cross connections rate among the most persistent public-health risks in water distribution systems.<\/p>\n
I-News found that 30 percent of water providers inspected by the state since 2009 were found to be in violation for something related to cross connections or backflow \u2013 most often issues related to documenting or managing risks. And 9 percent of the water systems were found to have potentially hazardous cross connections.<\/p>\n
Among schools operating their own small water systems, inspectors found cross connection issues to be even more prevalent. Roughly 47 percent were found to be in some kind of violation of cross connection or backflow rules, while risky cross connections were found in 19 percent of the schools, according to a recent analysis by the Colorado Department of Public Health and Environment.<\/p>\n
If left unchecked, these routine plumbing problems can make people sick.<\/p>\n
Last fall, 26 people at a medical facility in Colorado Springs fell ill after drinking water that tasted and smelled odd.<\/p>\n
The building, which includes Memorial Hospital\u2019s surgery and wound care centers, shut down until an investigation by state public-health authorities identified the probable culprit: a faulty connection between the drinking water and the ventilation, or HVAC, system.<\/p>\n
Propylene glycol \u2013 an ingredient in antifreeze \u2013 had been leaking into the pipes for three days, officials found. Investigators said other anti-corrosive chemicals may have gotten into the water, as well.<\/p>\n
NexCore Properties, which manages the building, had no comment on the state\u2019s findings. Paula Freund, a spokeswoman for Memorial Hospital, said she\u2019s confident the water problem has been fixed.<\/p>\n
Fred Spengler is one of a few technicians in the state trained to find and fix cross connections in homes and businesses. In Colorado, he says, it\u2019s often older homes that have problems, or those with special features like solar panels or heated driveways.<\/p>\n
But issues turn up in mundane places, too.<\/p>\n
\u201cLots of the cross connections have to do with toilets,\u201d says Spengler.<\/p>\n
A 2004 study conducted in Iowa by the University of Southern California\u2019s Foundation for Cross Connection Control and Hydraulic Research found that nearly one in ten homes had a direct connection to a health hazard \u2013 most often in the toilet, but also in heating and cooling systems, water softeners and outside spigots.<\/p>\n
Patrick Sylvester, the study\u2019s project manager, said in an interview that he was surprised how many homes had faulty sewer connections \u2013 14 of the 188 homes included in the study.<\/p>\n
Only 4 percent of the homes were fully protected from a direct or indirect cross connection, according to the USC report.<\/p>\n
\u201cMost of the cross connections could be abated with a few dollars and a few minutes,\u201d the study found, \u201cbut residents were unaware of the hazards existing in their own plumbing system.\u201d<\/p>\n
As in larger water systems, faulty cross connections at home can cause health problems if a change in water pressure or a disruption to the water line coincides with an unprotected connection. In most instances, an illness caused by backflow would be tough to trace to its cause; it might be dismissed as a 24-hour bug.<\/p>\n
In some cases, the consequences can be serious. In Commerce City last year, Nick and Roxanne Cattaneo were awarded more than $900,000 from Aquakleen Products Inc. after their family\u2019s sewer line was mistakenly connected to their drinking water during the installation of a water softener.<\/p>\n
Commerce City officials warned at the time that Aquakleen had installed water softeners at more than 100 households without a permit. Backflow from a household has the potential to pollute public water, too.<\/p>\n
A lawyer representing Aquakleen said the company had no comment.<\/p>\n
From 1970 to 2001, according to the National Research Council, there were 12,000 reported illnesses from 459 instances of backflow. The number doesn\u2019t catch unreported cases.<\/p>\n
\u201cBecause of the enormous range of contaminant sources involved, as well as the number of unprotected cross connections, backflow events collectively constitute the greatest potential health risk from distribution system contamination,\u201d the National Research Council reported in 2006.<\/p>\n
In Colorado, state water-quality inspectors periodically inspect larger water systems, which include anything from a school or a campground with its own well and filtration system, to a town or a city.<\/p>\n
Larger water systems like the city of Denver are required to keep records of the highest-hazard spots in their jurisdiction \u2013 places like the Denver Zoo, where the water district found in 2006 that water meant for washing down the lion\u2019s den was mixed with employees\u2019 drinking water.<\/p>\n
Nearly 1 in 3 water systems in the last five years has been dinged for failing to keep adequate testing records or for other backflow-related problems.<\/p>\n
Most schools aren\u2019t routinely tested by the state \u2013 it\u2019s left to their water providers to mitigate the risks. But schools with their own wells have a poor record of compliance.<\/p>\n
The water system that supplies Caliche School in the northeastern Colorado town of Iliff, for example, failed to install backflow preventers in the mop sink, the auto shop and the training room, state inspectors found during the most recent inspection in 2010. School officials say the backflow preventers are now in place, and the water system is being upgraded.<\/p>\n
Officials from the state public health department downplay the risks associated with backflow, emphasizing that water pollution from a bad connection depends on a lot of things going wrong at the same time \u2013 for instance, a pressure change, an absence of protection, and the presence of a harmful contaminant.<\/p>\n
\u201cIt is a potential risk, and it is something that we evaluate,\u201d says Ron Falco, who manages the state\u2019s safe drinking water program. \u201cA cross connection by itself isn\u2019t a contamination.\u201d<\/p>\n
The state rarely punishes water providers solely for problems related to cross connections, even in cases of repeated problems.<\/p>\n
However, they acknowledge that the state regulations need updating \u2013 in part to offer more guidance to small, cash-strapped systems.<\/p>\n
After a salmonella outbreak in Alamosa in 2008 that was unrelated to backflow, a team of investigators called for a series of reforms to prevent future incidents of waterborne illness, including updating state regulations related to cross connections.<\/p>\n
Four years after that report came out, however, the old rules are still in place. The outdated regulations don\u2019t mention specific hazards to look out for such as chemical laboratories, aircraft manufacturing facilities or mortuaries. They also don\u2019t spell out specific backflow prevention methods or set testing standards.<\/p>\n
Falco, who was lead author of the 2009 report on Alamosa, says that the current rules don\u2019t pose any risk to the public. He said that inspectors have stepped up surveillance of backflow-related risks since 2009, and expects to see improvements in water providers\u2019 records.<\/p>\n
The new rules are expected to launch by January 2015.<\/p>\n
I-News is the public service journalism arm of Rocky Mountain PBS. To read more, visit inewsnetwork.org.<\/p>\n
A few simple steps can help protect your drinking water from contamination via backflow in your home. Hiring a backflow prevention technician or a licensed plumber is the best way to make sure your plumbing is safe.
\n Faucets
\n Make sure the lower end of each faucet is at least an inch above the top edge of the sink or tub.
\n Toilets
\n Lift the top of your toilet tank and look inside. Make sure the fill valve is at least an inch above the water.
\n The bowl refill tube should also be above the water line.
\n Boilers
\n Install a backflow preventer on your boiler. Otherwise, pressure from the boiler water \u2013which is often treated with hazardous anti-corrosion chemicals\u2013may be pushed into the potable water line.
\n Garden hoses
\n Install a vacuum breaker on each outside spigot.
\n Never leave a hose submerged in a bucket, hot tub or swimming pool. Contaminants from the yard can be sucked back into your drinking water.
\n If you\u2019re using a Miracle-Gro nozzle or other add-on to your hose, unscrew it when you\u2019re done using it. Without a backflow preventer in place, fertilizer or other chemicals can contaminate your water.
\n Sprinklers
\n Install a vacuum breaker well above the ground and above the level of all sprinkler heads in your yard, to ensure that chemicals, fertilizer or pet waste aren\u2019t pulled into your drinking water.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
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