Tapcensus

Nitrate-Nitrite (Combined) violations in Wyoming

107 active public water systems in Wyoming had a Nitrate-Nitrite (Combined) violation in the past three years, 7 of them in the latest quarter of EPA's data. What Nitrate-Nitrite (Combined) is and why it matters.

Health effects: The combined limit protects against methemoglobinemia — the same risk as nitrate alone and nitrite alone. In infants under 6 months, gut bacteria convert these nitrogen compounds to forms that block oxygen transport in blood ('blue baby syndrome'). Pregnant women and individuals with certain enzyme deficiencies are also at elevated risk.

Systems with a Nitrate-Nitrite (Combined) violation

Latest quarter first, then largest first
SystemServesStatusRules violated, 3 yrUnresolved
Hagens Estates
Gillette · Campbell County 		29 9 0
Snowy Mountain Lodge
Centennial · Albany County 		29 1 0
Green River Bar
Sublette County 		28 2 0
Boysen ST PK Tough Creek #2
Shoshoni · Fremont County 		25 1 0
Camp Paintrock
Hyattville · Big Horn County 		25 3 1
Bhnf-Burgess RS
Sheridan · Sheridan County 		20 2 0
Alcova Lakeview Estates II
Casper · Natrona County 		9 3 0
About this data

A system is counted once if any of its violations in the past three years involved Nitrate-Nitrite (Combined), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Nitrate-Nitrite (Combined) alone.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Wyoming records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.