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HUGO, Colo. -- Residents in an eastern Plains town are being warned not to drink or cook using the local water supply after it was found to be tainted with THC, the active ingredient in marijuana, the Lincoln County Sheriff's Office said Thursday.

One of the well houses associated with the water supply showed signs of tampering, the sheriff's office said. Hugo public works employees found the evidence of "forced entry into the raw water system," according to a spokesman.

The FBI, Colorado Bureau of Investigation and Lincoln County Sheriff's Office were working together on the investigation. It's not known how much THC is in the water.

The sheriff's office warned residents not to drink the water or cook with it. The warning is precautionary, a spokesman said.

#HugosWater From CO Public Health- It is safe to shower, bathe, and washing clothing! We ask that you do not ingest the water. — Lincoln Sheriff (@LincolnCountySO) July 22, 2016

The sheriff's office said residents should use bottled water until the water is OK to use again, which should be in about 48 hours.

"Health officials, law enforcement officers and emergency managers are all involved in this situation. Bottled water on the way," the sheriff's office tweeted Thursday afternoon.

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Water distribution will take place at Hugo Town Hall (522 Second Ave.) starting at 7 a.m. Friday. Each person will be allowed to take four bottles.

Please read the following release regarding Hugo's THC contamination #hugoswater pic.twitter.com/ZMJHEdyJb6 — LincolnComHospital (@LincolnCHCC) July 21, 2016

The sheriff's office said officials tested the water after getting complaints.

"No symptoms to anyone," the sheriff's office tweeted.

#HugosWater- Well #1 is being held until addtl resources arrive. State Lab Team enrt to complete more tests pic.twitter.com/kJF8NOGqKy — Lincoln Sheriff (@LincolnCountySO) July 21, 2016

About 720 people live in Hugo, according to census data. It is just southeast of Limon.

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