CNN was told by the state that it has been adding HaloSan to the water in Denmark since 2008.
An EPA spokesperson tells CNN that HaloSan is not approved to be used to treat drinking water.
Wright tells CNN that he defers to South Carolina’s DHEC.
The state Department of Health and Environmental Control says it required daily monitoring, "performed by the certified system operator," of "any chemical" added to the drinking water, ensuring that the maximum dosage is not exceeded.
But, the couple says there have been concerns about skin rashes and kidney problems among residents for years, although a link has not been made directly to the water.
South Carolina’s DHEC tested Brown and Smith’s home in 2010, and found about twice the legal level of lead in the water.
But Edwards says he couldn’t let go of a nagging feeling that there was something missing, especially after finding red flags, like a 2010 local newspaper story where a city official declared the water had safe lead levels nine days before the testing was conducted.
Wright, Denmark’s mayor, later told CNN that officials were relying on 3-year-old data when talking to the newspaper because that was what was available at the time.
Skeptical of the town’s transparency, Edwards decided to request to test the town’s water at its source — the drinking water wells — for certain bacteria that might be causing some of the rashes and illness that residents described.
Denmark’s mayor told CNN he believes he has done everything to make sure the water is safe.

CNN was told by the state that it has been adding HaloSan to the water in Denmark since 2008.
A spokesman for South Carolina’s Department of Health and Environmental Control told CNN in an email that it believed HaloSan was EPA-approved for drinking water based on the way the system was "advertised."
An EPA spokesperson tells CNN that HaloSan is not approved to be used to treat drinking water.
The state Department of Health and Environmental Control says it required daily monitoring, "performed by the certified system operator," of "any chemical" added to the drinking water, ensuring that the maximum dosage is not exceeded.
But, the couple says there have been concerns about skin rashes and kidney problems among residents for years, although a link has not been made directly to the water.
"How can they say it’s good to drink?," Smith told CNN.
South Carolina’s DHEC tested Brown and Smith’s home in 2010, and found about twice the legal level of lead in the water.
But Edwards says he couldn’t let go of a nagging feeling that there was something missing, especially after finding red flags, like a 2010 local newspaper story where a city official declared the water had safe lead levels nine days before the testing was conducted.
Wright, Denmark’s mayor, later told CNN that officials were relying on 3-year-old data when talking to the newspaper because that was what was available at the time.
Drink it.

Pope Francis sends a message to an International Conference entitled, "The management of a common good: access to drinking water for all" which is taking place in Rome on the 8th November.
The one day International Conference is being held at the Pontifical Urbaniana University and has been organized by the Dicastery for Promoting Intergral Human Development in collaboration with the Embassies accredited to the Holy See of France, Italy, Monaco and the United States.
In his message, the Pope says the fact that in many parts of the world, people do not have access to clean water and often die from unhealthy water, “ is an immense shame for humanity in the 21st century.” He goes on to say that, “unfortunately, in many of the countries where the population does not have regular access to drinking water, there is no shortage of arms and ammunition, which continues to worsen the situation.” Corruption and economic interests The Pope adds, that corruption and economic interests all too often prevail over the needs of those who require clean water.
Pope Francis goes on to express the hope that those who speak and participate at this Conference will be able to stress the urgency, will and determination needed on this issue.
Holy See and Church commitment to clean water The Holy See and the Church, he points out “are committed to the access to clean water for all.
This commitment is manifested in many initiatives such as the creation of infrastructure, training, and advocacy…, he says.” The Pope underlines that “adequate anthropology is, in fact, indispensable for responsible and supportive lifestyles, for a true ecology, as well as for the recognition of access to drinking water as a right flowing from human dignity, and therefore incompatible with the concept of water as a commodity.” From the point of view of faith, he says, in every thirsty man we perceive the same image of God, as we read in Matthew’s Gospel: "I was thirsty and you gave me no drink".
Noting that this Conference appropriately involves representatives of different faiths and cultures, the Pontiff comments that, “the dual spiritual and cultural dimension of water should never be neglected, since it is central to shaping social fabric, coexistence and community organization.” He ends the message by inviting participants to meditate on the “symbology of water in the main religious traditions, exhorting them equally to “contemplate this resource which, as St Francis of Assisi wrote, is "very useful, very human and precious and chaste.”

The AfDB bank has approved a €117 million loan to finance investment into making drinking water available in Morocco.
The project will target 2.5 million people in Guercif in the northeast, Zagora in the east, Al Hoceima in the north, Tangier, and Beni Mellal in central Morocco.
The program, which plans to ensure sustainable access to drinking water, meets two of the bank’s five highest priorities: “Improve the quality of life for the people of Africa” and “Industrialize Africa.” For Leila Farah Mokaddem, the bank’s Morocco country manager, the project “will contribute to further improving the quality of life of millions of Moroccans.” “Taken together with our investments in education, agriculture and energy, it will facilitate the emergence of new poles of development,” Mokaddem added.
The project is also aligned with the priorities set in the 2016-2020 investment plan of Morocco’s National Electricity and Drinking Water Agency (ONEE).
In June, the head of ONEE in the Fez region, Mohammed Berkia, said that office is adopting projects to improve the potable water supply in Al Hoceima through 2035.
Berkia said the projects would cost an estimated MAD 714 million.
The government has budgeted MAD 900 million for the project, which will launch by the end of the year.
Berkia’s statements came three weeks after King Mohammed VI instructed the government to build river and hill dams to help alleviate water scarcity in rural Morocco.
The monarch called on the commission to establish desalination plants and to ensure sustainable water in agricultural fields.
In March 15, El Othmani announced that the government would introduce a national water plan through 2050 to solve water shortages in Morocco.

As his community deals with a state of emergency due to its dwindling water supply, the chief of the Ahousaht First Nation says long-standing issues with water on Canadian reserve land is a black mark on the nation.
Ahousaht, a small island community of 1,000 people near Tofino, saw its reservoir levels drop to dangerously low levels over the weekend.
Water is so scarce that the community doesn’t have enough to fight fires if one were to break out, leaders say.
Not only that, but the water supply that is coming in has been contaminated by mud and other debris from a weekend storm, with turbidity levels off the charts.
"There was such a severe, heavy rain and wind through the weekend that it was very clear there was a section of the dam where the water was just brown," said Ahousaht administration manager Anne Atleo.
The community has been receiving shipments of bottled water, which are being delivered door to door.
According to the First Nation Health Authority, 13 B.C.
reserves faced some type of serious water issue as of Oct. 31.
Nationally, 67 long-term boil water advisories are in place on First Nation reserves, according to Indigenous Services Canada.
The federal government has pledged to resolve all long-term drinking water issues on reserves by the year 2021.

In one of his first acts after securing the gubernatorial election, newly-minted Gov.-elect Gavin Newsom waded into a years-long dispute in California that could affect San Francisco’s water rights.
Newsom and outgoing Gov.
Jerry Brown sent a joint letter to the State Water Resources Control Board Tuesday night asking it to delay voting on a water plan to give the parties more time to negotiate a voluntary settlement.
“Voluntary agreements are preferable to a lengthily administrative process and the inevitable ensuing lawsuits,” the governors wrote.
Some commissioners expressed skepticism about incurring yet another delay, although in the end none voted against the continuance.
However, that resolution was vetoed Friday by Mayor London Breed, who said it would be “deeply irresponsible for San Francisco to take a position that would jeopardize our water supply.” The mayor on Wednesday said she supported the move to delay a vote.
“I think we’re getting to that point.” The State Water Board’s next meeting is set for Dec. 11.
“I believe that the resolution passed by the Board of Supervisors could significantly impair San Francisco’s ability to protect our interests on the critical issue of water supply management,” she said in a written statement.
“It is , and new analysis by the San Francisco Public Utilities Commission supports this conclusion,” she said.
Harlan L. Kelly, Jr., SFPUC general manager, thanked the board for the delay in a written statement and said they were committed to meeting the board’s deadline.

CHENNAI, India, Nov 8 (Thomson Reuters Foundation) – When the thousands of water lorry drivers who shore up parched Chennai’s overtaxed water delivery system went on strike for three days last month, to protest a ruling restricting their access to groundwater, a water crisis ensued.
For Parthasarthy, that’s a good business opportunity, and a chance to add to his fleet of 15 water trucks as the Tamil Nadu state government struggles to meet growing demand for clean water.
The port city of Chennai needs 800 million litres of water a day to meet demand for water, according to official data.
In particular, Chennai depends on more than 4,000 private water tankers for its everyday water needs.
According to the Chennai Private Water Tanker Lorry Association, which has more than 1,000 members, each tanker makes up to five trips a day, ferrying water from the outskirts of the city to apartments, hotels, malls and offices.
Altogether, the tankers deliver 200 million litres of water a day to Chennai, according to the association.
But critics say the firms’ use of rural water is depriving people in those areas of sufficient water – and that fast-depleting water supplies mean it’s time to rethink how water is managed in Chennai.
Last month, the Madras High Court – Chennai’s highest court – finally ruled on a petition brought by 75 drinking water bottlers against the 2014 Tamil Nadu water restrictions.
Bottlers had demanded exemption from the order, arguing that good monsoon rains would adequately replenish disappearing groundwater.
The plant would provide 150 million litres a day of water to Chennai and its suburbs, and is expected to be running in the next five years, he said.

JEFFERSON CITY, Mo.
– A water utility has restored service to a large area of Jefferson City after two main breaks left 5,500 customers with little or no water.
According to Missouri American Water officials, one 12-inch water main broke Tuesday.
The outage affected customers south of Stadium Boulevard in Jefferson City.
Brent Haas, Missouri American Water operations manager, said all customers were notified.
Jefferson City Public Schools spokeswoman Ryan Burns in an email wrote that South and Moreau Heights elementary schools are in the affected area and precautions have been taken to eliminate access to drinking water.
Wednesday is an early release day and the district will provide students bottled water until the end of the shortened day, she wrote.
Capital Region Medical Center was also without water due to the main break.
Helias Catholic school was also closed Wednesday because of the water main break, which affected one of its buildings.
The previous map, which was obtained from Missouri American Water, was incorrect.

A precautionary boil advisory is being issued for Missouri American Water customers in part of Jefferson City.
However, as that was taking place, a second break on Southwest occurred and crews had to stop the pumping to fill the tank.
Crews had to work throughout the night to fix the second break on Southwest and were unable to fill the tank on Ellis like they normally would do.
Because of this, many customers in the area of Southwest Boulevard had little or no water pressure when they got up on Wednesday morning.
was without water, according to a news release from Capital Region at approximately 8:50 a.m. Wednesday.
Jefferson City Public Schools announced at noon that two of its elementary schools in the impacted area are also under the precautionary boil water advisory.
Three other JCPS buildings — Cedar Hill and Lawson elementary schools and Thomas Jefferson Middle School — are also located within the impacted area, but are not affected because they are not serviced by Missouri American, according to a news release from JCPS Director of Communications Ryan Burns.
JCPS said it would continue to monitor the situation and would remain in contact with Missouri American, and would provide more information if anything changes.
In all, Russell said approximately 5500 customers were in the affected area.
According to Missouri American’s website alert on the boil advisory, "We are asking customers to bring their water to a rolling boil for three minutes before using it for drinking or cooking.

Most people don’t even give it a second thought, but that will change drastically within the next few decades.
About 71 percent of the earth is covered in water, so what’s the big deal?
The issue is that only about 2.5 percent of that water is freshwater and 1 percent is readily drinkable.
According to the National Oceanic and Atmospheric Administration, more than 30 percent of the water which we use is taken from underground aquifers.
And in Florida—a state which is responsible for 40 percent of the world’s orange juice supply—90 percent of all water comes from aquifers.
These aquifers are necessary for the survival of over 40 percent of the world’s population.
In 2010, the United Nations recognized access to clean drinking water as a basic human right.
Unlike other commodities, water is necessary for life.
I believe that it is one of the most pressing and difficult issues which our generation will have to face, as water is such an integral part of life on Earth.
If we don’t make some breakthrough in how we are able to create water efficiently or make some drastic policy changes in the next few years, we will likely be looking at a crisis which will push the extremes of poverty and further the disparity between the rich and the poor.