Tapcensus

Nitrate-Nitrite (Combined) violations in Missouri

159 active public water systems in Missouri had a Nitrate-Nitrite (Combined) violation in the past three years, 1 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
Riverbird Winery
Camden County
25 3 0
Singh Property LLC Dba Missouri Dhaba
Lawrence County
25 3 1
ST Francois Country Club INC
Farmington · St. Francois County
25 3 0
Stateline Munch N Pump
Reynolds County
25 3 0
Timber Point
Stone County
25 4 1
Uturn RV Park and Convenience Store
Reynolds County
25 3 2
Willowes
Camden County
25 3 0
Windwood Condominium
Camden County
25 1 0
Ozark Beach Resort
Taney County
18 4 1
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 Missouri 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.