If an upgrade to the Big Sky Water and Sewer District treatment plant resulted in treated wastewater with a lower nutrient content, this could lessen nutrient loading to local rivers and streams via wastewater irrigation. Lower nutrient levels in recycled water used to irrigate the Big Sky Resort golf course could decrease one source of nutrients to the West Fork and reduce the prevalence and extent of algae blooms. Due to the complex nature of nutrient transport to rivers and the many factors driving algae blooms, we cannot predict how treatment plant upgrades would impact algae growth with any certainty.