The State of Colorado has adopted Health Advisory Limits (HAL) for three compounds: PFHpA, PFOS and PFOA. Per the Colorado Department of Health and Environment, the sum of the concentrations of these three PFCs for a lifetime exposure should not exceed 70 parts per trillion (70 ppt).

Since 2015, Fountain has tested the water at every source: wells; connections to other water systems; connections to the Fountain Valley Authority (the treatment plant that treats the water from the Pueblo Reservoir); and throughout the municipal water distribution system once every three months. These samples are obtained by Colorado State Certified Water Operators according to standard sampling protocols and tested by Environmental Protection Agency (EPA) certified laboratories. Six (6) of the PFC concentrations are tested. These are PFOA, PFOS, PFNA, PFHxS, PFHpA and PFBS. Water delivered by the City of Fountain since late 2015 has not contained detectable levels of these six contaminants.

As part of the operation of the Granular Activated Carbon treatment unit, Fountain will be testing water samples 
for these six contaminants weekly. The first test results are posted below for samples obtained on May 29, 2018 at the Aga Park facility, confirming that the level of contaminants in these samples was not detectable (below 2 parts per trillion).