Questions About New Water Disinfectant

  • Karen Lukacsena owns an aquarium store outside of Pittsburgh. She's recommending that customers filter their tap water. This is because Chloramine, a new chemical more utility companies are using to purify water, kills the fish (and could be toxic to humans, too). (Photo by Katherine Fink)

The way your tap water is disinfected might be changing. Federal regulations to improve water safety are leading water utilities to switch the kind of chemicals they use. But Katherine Fink reports one of those chemicals might do more harm than good:

Transcript

The way your tap water is disinfected might be changing. Federal regulations to improve water safety are leading water utilities to switch the kind of chemicals they use. But Katherine Fink reports one of those chemicals might do more harm than good.

Elmer’s Aquarium has tanks and tanks of fish.

“These are all freshwater; these fish come from all over the world.”

Karen Lukacsena is the Vice President of Elmer’s Aquarium here in a suburb of Pittsburgh.

“Elmer’s has been here for 40 years, and Elmer was my father.”

A lot has changed since Elmer started the business. For instance, there are different products that purify tap water for aquariums:

“Because we don’t really know when someone comes in here what their water’s treated with–whether it’s chlorine or chloramine. And they can always call and check, but to be safe, we just think everyone should go ahead and treat their water.”

Chlorine poisons fish. But if you set water out for a few days, the chlorine will dissipate. Chloramine is different. It’s what you get when you mix chlorine and ammonia. And it does not dissipate. It sticks around.

That’s one reason drinking water providers like it. Paul Zielinski is with Pennsylvania-American Water:

“We don’t see the decay through the distribution system reaching our furthest customers like we do with chlorine; it tends to stay longer in the system and provide a higher disinfectant level, if you will.”

That means even if the water stays in the underground pipes for a long time, chloramine will still be doing the job, disinfecting the water. Until recently, only about one-fifth of water providers used chloramine. Soon, two-thirds of them might be using it. That’s because of new federal rules that take effect in 2012. The Environmental Protection Agency found when organic matter—such as vegetation—mixes with chlorine, it increases the risk of bladder cancer and reproductive problems. So Zielinski says water providers like his are being ordered to limit that risk:

“So one of the ways to do it is obviously to switch from chlorine, which generates these byproducts, to chloramines, which doesn’t.”

But all disinfectants have their downside. For one thing, chloramine corrodes lead and copper pipes. Many water providers add other chemicals to prevent that from happening. But a few years ago, when Washington D.C. switched to chloramine, lead got into the water. Lead is toxic. It can cause learning disabilities. So much lead got into the tap water that researchers believe some young children lost IQ points.

The EPA’s regulatory arm says chloramine’s safe. But an EPA chemist, Susan Richardson, says she’s not so sure:

“Personally, as a private citizen, I would be a little bit concerned myself, and might have a filter on my faucet.”

Richardson’s research found that chloramine also creates byproducts in drinking water. And those byproducts appear even more toxic than the ones created by chlorine:

“I’m really hoping that some of the toxicologists at EPA carry this further to really help us assess that.”

“And in the meantime, we’re going to be drinking this water.”

Susan Pickford is an attorney who doesn’t want her town’s water to be disinfected with chloramine.

“Bathing in it, using it in cooking, and exposing ourselves to huge toxins until the EPA gets around to regulating them.”

Pickford is fighting plans to use chloramine in her central Pennsylvania town. She says there’s a better way to reduce toxic byproducts, and no one’s talking about it: filtering the water.

“If they could filter, and they can, there is filtration available that would help them filter 70 to 80 percent of those organics out of the source water, then when the chlorine cleans the water, it wouldn’t be creating all these byproducts.”

But better filtration systems are expensive. And utilities say water bills would go up for customers. That’s not popular. So they say it’s a matter of customers deciding how much of a risk they’re willing to take, and how much they’re willing to pay.

For the Environment Report, I’m Katherine Fink.

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Inner City Church to Turn Water Into Heat?

Underground mines that were abandoned long ago are coming back to haunt the people and places above them. The voids and toxic metals left behind are posing new kinds of environmental challenges. But one church that was almost destroyed by a mine is now trying to turn it into a new kind of green resource. Katherine Fink reports:

Transcript

Underground mines that were abandoned long ago are coming back to haunt the people and places above them. The voids and toxic metals left behind are posing new kinds of environmental challenges. But one church that was almost destroyed by a mine is now trying to turn it into a new kind of green resource. Katherine Fink reports:


John Wesley A.M.E. Zion Church is on a street where cars don’t stop. Crime rates are high here. A faded sign with graffiti on it indicates where a convenience store used to be. Most of the church’s stained glass windows are either missing or covered with plywood. Pastor Calvin Cash says he remembers when things were different.


“This was once a thriving community. Stores, residential homes, businesses, the whole bit.”


Cash was first assigned to the church in 1996. It had been closed for a couple years. He found 18 inches of orange water in the basement. Moss was growing on the walls. Cash says church leaders had known about the water problem, but thought they had it under control.


“For years, they had sump pumps down in the basement. And when the water reaches a certain level, the sump pumps would come on, and carry it away.”


Meanwhile, state environmental workers were investigating another mysterious pool of water down the street. They suspected an old underground mine had filled with water and was starting to burst. One of those workers, Charles Johnson, noticed the church nearby.


“I left a card inside of the mailbox with my number on it and said if you are having any water problems in your basement, give me a call… so within two days, reverend Cash gave me a call and said, ‘you got to see this.'”


Mine-related issues are not new for the Pittsburgh area, which has one of the largest coal seams in the country. But water problems like these are becoming increasingly common as more and more mine voids fill to capacity. Johnson says in the church’s case, the need for a fix was urgent.


“The pressure on the building from the water; it was just a matter of time before the pressure would just collapse the whole building.”


Workers redirected the water into local storm sewers, relieving the pressure on the church.


Since then, Johnson says they’ve learned that mine water can actually be useful. Its constant 57-degree temperature makes it an attractive candidate for geothermal heating, which uses the earth’s natural warmth.


George Watzlaf with the National Energy Technology Laboratory has studied the idea.


“We could probably reduce their heating and cooling costs 60, 70, maybe 80 percent; the annual cost.”


Geothermal heat is becoming increasingly common as a lower-cost alternative to natural gas. Pipes filled with an antifreeze solution carry heat from deep in the earth up into buildings. Instead of using antifreeze, Watzlaf says he wants to build a system that draws in mine water:


“We’re trying to put together a small project where we price everything out to say, okay, all we need is $10,000 to go out and put in a small system somewhere, heat a shed or something like that. Just to, no pun intended, get our feet wet and just learn some things about some of the potential problems and how we can overcome those problems.”


Reverend Cash wants his church to be that demonstration project. Since learning about geothermal heat and its potential cost savings, Cash is convinced it could save his blighted neighborhood. He’s become a convert to all things green.


“We are responsible for this world, and God expects us to take care of it.”


On this night, Cash is holding a workshop at the church to help residents learn how to make their homes more energy efficient. Only one person came. Trays full of untouched sandwiches, fried chicken and cookies are being wrapped up for another day, but reverend Cash says he’s not discouraged. Sometimes, he says it takes something big to get people’s attention:


“One of the best proofs of it, when they were taking that water out of there, we had all that heavy equipment active out there, and if 10 cars went by, nine of then slowed down or stopped to see what was going on. And I think when we start building back this community, that curiosity will grow, and benefit us. So we’ll hold on and see.”


Cash is hoping to convince the state to have faith in geothermal heat. His church is applying for a grant this year.


For the Environment Report, I’m Katherine Fink.

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