Some Narragansett and South Kingstown residents are being warned to boil their tap water.
The Rhode Island Department of Health issued a boil water notice on Friday after e-coli bacteria was found during routine sampling by Suez Water.
The company sells water to four other local systems, serving around 38,000 resident along with restaurants and concession stands.
Water company officials said in a statement that they are investigating the source of contamination, and hope to correct the problem by Wednesday.
The notice will be lifted when water tests come back bacteria-free for three consecutive days.
Local agencies are offering support to residents until the contamination is addressed.
The Kingstown Fire Station invited affected customers to come fill water bottles at the station.
The Rhode Island Emergency Management Agency will provide bottled water to South Kingstown schools, the Senior Center, and Public Housing Authority residents.
And home-bound residents of Narragansett and Kingstown may request to have clean water delivered by contacting town authorities.
Residents who are concerned about their own water can check affected areas on an online map and list of the streets.

These compounds have been found in water sources all over the country, including elsewhere in the Tucson Metro Region.
For example, the EPA’s health advisory level for 1, 4 Dioxane is 0.35 parts per billion, but Alaska set their standard at 77 parts per billion and New Hampshire’s is 0.25.
As far as a funding source, he suggested that an additional sales tax might be an option.
Marana and other local jurisdictions, along with the Arizona Department of Environmental Quality, are continuing to investigate whether the contaminants came from Davis-Monthan Air Force Base or another source, but so far no definitive source has been identified.
The contamination levels in a number of the wells have dropped since the town began testing the water in late 2016, though a few have slightly increased.
Marana Water looked at other options besides treating the water, but advised against them.
One of those options is “water blending,” which happens when a contaminated system is connected with a clean system.
The Northwest Recharge, Recover, and Delivery System is another project in the works, to be constructed in 2023.
Kmiec said because of these challenges, this option “quickly fell off the radar.” Town Manager Jamsheed Mehta said the town staff will put together a proposal on how and when to build the treatment centers, which should be ready to present to council sometime in late-September to early-October.
Mayor Ed Honea said the council wants to see the treatment facilities happen as quickly as possible.

Most of South Kingstown and Narragansett have been under a boil water advisory since Friday after bacteria was discovered in the water supply.
The Rhode Island Health Department said the testing likely won’t start until Wednesday at the earliest.
In the meantime, 38,000 residents have to boil their water or get bottled water.
“It’s pretty disappointing and it stinks,” said Tish Rhoat of Wakefield, after she filled jugs of water at the sink at the Kingston Fire Station, which is the official filling station for people in need of clean water since it is not affected by the water problem.
The schools in Narragansett and South Kingstown are stocking up on water, too, as they prepare for the first day of classes Tuesday.
Phil’s Restaurant is open.
Can’t use any of the water.
The Health Department said it has inspectors in the area to help businesses.
“I’d like to see Suez step up to the plate and come down here with some water,” she told NBC 10.
Customers can also call their water system to get answers to their questions: Suez Water: 401-789-0271 (primary) or 401-316-2201 (secondary) Narragansett — Point Judith: 401-789-1091 (Narragansett police dispatch line) Narragansett — North End: 401-789-1091 (Narragansett police dispatch line) South Kingstown — South Shore: 401-789-9331 (South Kingstown Town Hall) South Kingstown — Middlebridge: 401-789-9331 (South Kingstown Town Hall) The Department of Health said a health care provider should be contacted if someone has diarrhea and any of the following symptoms: Fever over 101.5 degrees, measured orally Blood in the stool Prolonged vomiting that prevents keeping liquids down (which can lead to dehydration) Signs of dehydration, including a decrease in urination, a dry mouth and throat, and feeling dizzy when standing up Diarrheal illness that lasts more than three days The Department of Health has posted a downloadable fact sheet about water contamination.

City Official: “There’s no health threat.
There’s no reason to boil your water.” DUNDEE — Town officials say high contaminant levels in drinking water are nothing that residents should worry about.
For samples collected between January and March, the town of Dundee’s two water plants showed levels for trihalomethanes (TTHMs) to be over the maximum set by the state, according to a task order from the Florida Department of Environmental Protection.
According to the Florida Department of Health, cancer risks are calculated as lifetime risks associated with drinking two liters per day over 70 years.
Per the consent order, the issue must be fixed within two years.
“What we’re thinking is it’s a source water issue,” Ware said.
We won’t know that for sure until the research comes back.” Bernard, who previously worked in Haines City, said this problem isn’t new to the area — only to Dundee.
“It’s new to Dundee, but something we have to fix and something that can be fixed,” he said.
Once water is pumped from the Florida Aquifer through the town’s water system, it is treated with sodium hypochlorite, which forms the contaminants.
“The natural organics need the chlorine to form, but we need the chlorine to disinfect.” Mike Ferguson can be reached at Mike.Ferguson@theledger.com or 863-802-7545.

The School City of Hammond School Board had a heated public meeting on Tuesday following reports of lead found in the schools’ drinking water.
In an email to staff on Thursday, Superintendent Walter Watkins said seven buildings, including six schools, registered lead levels above the recommended Environmental Protection Agency threshold when tested on Aug. 9-13.
"It’s important we took the time to develop a plan to address this crisis."
The administrators handed out certain details of the test at the board meeting, indicating that a total of 52 water fountains and 28 sinks were taken out of service due to lead contamination levels.
He said once those results are in, he will publish them on the School City of Hammond website, and the administration will decide appropriate action.
"Later I found out we were not going to be giving out bottled water to kids," Watkins said.
"That’s not what we’re recommending because we don’t know at times what’s in bottled water that you’re allowing to enter schools."
However, some residents were not satisfied with the answers given to them Tuesday evening, calling for a full report of the first round of testing to be released to the public, including the name of the third-part agency that’s doing the water quality tests.
"I don’t know how I’m supposed to look at them and tell them they’re supposed to learn when my classroom is 92 degrees," Ramirez said at the meeting.
"How can I deliver the student rights and staff rights during suspended curriculum, when it says they have the right to a safe environment that is conducive to learning, when it’s 92 degrees in their classroom?"

The city has identified three locations in Cadillac that still are using water in an area known to have been polluted by the Kysor Industrial Corporation, which began operations in 1959 as an automotive parts manufacturing plant.
The Cadillac City Council on Monday approved an ordinance that will require these locations to hook into the city’s water supply rather than use their own wells.
Contaminants and known carcinogens discovered as a result of Kysor’s activities include trichloroethane, acetone, chloroform, cyanide, tetrachloroethene, trichloroethene and chromium, among others.
Cadillac Director of Utilities Jeffrey Dietlin said when the contamination was discovered several decades ago, many residents and businesses that had been using their own wells hooked into the city’s water supply.
With the new ordinance passed by council, the city will pay to hook up the remaining locations still using their own wells into the city water supply.
Use of water from any well in the affected area now is prohibited unless an exception is granted by the Environmental Protection Agency.
Dietlin said the EPA contacted him a couple years ago to ask the city to impose additional restrictions following the discovery of large amounts of lead in the Flint water system.
Once the city hooks up the three locations and properly caps off their wells, the resident will be responsible for paying their monthly water bill.
Affected groundwater, which was discovered in the 1980s, has migrated north from the Cadillac industrial park to a residential area in Haring Township.
Haring Township previously enacted restrictions in compliance with EPA standards for the site.

The wide roads of Peenya industrial estate give way to small congested lanes of Shivapura.
The water has a thin layer of whitish froth while sediments float around the mug.
While they get piped Cauvery water supply, the community borewell is a critical part of their water intake.
Her husband Krishnamurthy says that though the civic body has started supplying water from a new borewell, dug a few feet from their house, its motor has already stopped functioning.
Water not fit even for industrial use Set amidst the industries, some of which use chemicals, Peenya has very visible signs of industrial contamination.
Karihobanahalli lake and Shivapura-Nalakadarenahalli lakes are so polluted with chemical effluents and sewage that the water has been deemed unfit for even industrial use.
Jayaram Shetty, who lives close to Peenya Phase II, says 90% of the residents have stopped using borewell water for drinking purposes.
Of the samples tested, 40% were found to be acidic while almost all samples were above the permissible limits for hardness.
There is no doubt that industrial effluent has seeped into the groundwater,” says Blessy B.M., a professor at Sapthagiri college who, along with her colleague N.B.
Malyadri Reddy M., president, Peenya Industrial Area Association, says that the construction of a Common Effluent Treatment Plant (CEPT) would effectively ensure no effluent is let out untreated.

On their first day, students at public schools in Detroit, Michigan, were told to drink from coolers and bottled water, instead of water fountains—many of which have been found to contain water with unsafe levels of lead and copper, the Associated Press reports.
Detroit public schools shut off the district-wide water supply last week after tests found elevated levels of lead or copper in 34 schools, according to the Detroit Free Press.
"We took the initiative to do this, but it’s unfathomable to think that federally, there is no national mandate to test water," Detroit Public Schools Community District Superintendent Nikolai Vitti told the Free Press.
"And when I say water, I mean every water source."
As Vitti argues, more comprehensive testing may be needed.
New state-wide tests have found high levels of dangerous chemicals, perfluoroalkyl and polyfluoroalkyl substances (known as PFAS), in the water supply of several Michigan communities.
As testing continues, experts expect to find more such contamination across the state.
Meanwhile, other districts remain at risk across the country: An estimated 13 million children in the United States went to schools where officials found elevated levels of lead in drinking fountains and kitchen taps last year, according to a 2018 government watchdog report.

Nitrate is a common pollutant in Eau Claire County and can enter our water through leaky septic systems or runoff from lawns or farm fields.
Across Wisconsin, about 1 in 5 wells in farmed areas may be over the safe level of nitrate in water.
In Eau Claire County, this means up to 1,800 private wells may have unsafe drinking water.
“Yearly well checkups can identify pollution that can make us sick.” How do high levels of nitrate make us sick?
Nitrate levels above 10 parts per million are most harmful for pregnant women and infants.
Boiling water does not remove nitrate.
Nitrate levels above 2 parts per million may mean there are other pollutants in our water that can make us sick, such as bacteria, prescription drugs, or other chemicals used on lawns or fields.
We recommend an annual nitrate and bacteria test.
• Schedule an annual inspection by a local well driller or plumber to check the physical health of your well.
If your drinking water is unsafe: If your well has unsafe levels of nitrate, bacteria, or other pollutants, the Health Department can recommend more tests or treatment options that can improve the safety of your water.

House Democratic floor leader Christine Greig, of Farmington Hills, speaks while other House Democrats look on during a news conference, Tuesday, Sept. 4, 2018, in the state Capitol in Lansing, Mich. Democrats accuse majority Republicans of "inaction" on the contamination of tap water with old industrial chemicals, a charge the GOP denies.
(AP Photo/David Eggert) The Associated Press LANSING, Mich. (AP) — Democratic lawmakers on Tuesday accused majority Republicans of "inaction" on the contamination of tap water with old industrial chemicals, demanding that hearings be held to strengthen Michigan’s standard and to study why an internal state report that warned of dangers was ignored.
The renewed calls came a day before the GOP-led Legislature was to return to session after a summer break during which residents in the city of Parchment and Cooper Township in Kalamazoo County were told not to drink their municipal water for a month due to high levels of perfluoroalkyl and polyfluoroalkyl substances, or PFAS.
The industrial compounds — which were used in products like firefighting foam and carpets — also have been found in at least 34 other sites in 19 communities .
Rep. Winnie Brinks, a Grand Rapids Democrat, said at a Capitol news conference that the state does not have an enforceable PFAS limit established in law, and the combined standard of 70 parts per trillion — set by Gov.
"This cap would be the lowest in the country and would ensure that the water coming out of Michiganders’ taps is worth of being called pure," said Brinks, who introduced legislation in December to lower the PFAS standard.
"Access to clean, safe drinking water is a fundamental right."
A response team created by the Republican governor last year is reviewing the science and may make a recommendation on the PFAS standard.
Asked why no hearings have been held, spokesman for GOP House Speaker Tom Leonard said Republicans "are focused on getting the state’s emergency response up and running first."
"The state is still working on testing water systems statewide and finding affected communities, and the Legislature’s focus needs to remain on this emergency testing and response until experts can determine the extent of the problem," D’Assandro said in a statement.