From The Pueblo Chieftain (Matt Hildner):
Tyson Ingels, lead drinking water engineer with the Colorado Department of Public Health and Environment, said crews planned to fill the system’s 300,000-gallon storage tank with chlorinated water then run it through the distribution pipes that serve 414 taps. Routine sampling of the town’s water supply came back positive for E. coli Wednesday, prompting a boiled water advisory for all of the town’s residents.
As of Thursday evening, there had been no reported illnesses from the contamination, according to the Costilla County Public Health Department…
Still to be determined, is whether the water and sanitation district will have to chlorinate its water after this week. Ron Falco, manager of the state health department’s drinking water program, said the positive test didn’t automatically mean the district would lose its disinfection waiver. But he said the district’s waiver and the contamination would be up for a thorough review once the system is up and operating again. The sanitation district, like six other distribution systems in the valley, delivers untreated groundwater to its customers.
More water treatment coverage here.