D27/100
MOUNTAIN GROVE PWS — Water Quality Report 2026
Serving 4,789 people · Missouri
Water Source
Groundwater
County
—
System ID
MO5010550
Violations
25
Contaminant Test Results
EPA Violation History
4
Violations (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Resolved
Reporting violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 17, 2024 – October 25, 2024Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2023 – November 1, 2023Enforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2021 – December 6, 2021Enforcement: Resolving — corrective action underway
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About MOUNTAIN GROVE PWS
Is MOUNTAIN GROVE PWS water safe to drink?
MOUNTAIN GROVE PWS water receives a grade of D (27/100), which is considered poor. 0 contaminant(s) exceed EPA legal limits and 25 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has MOUNTAIN GROVE PWS detected?
31 contaminants were tested in MOUNTAIN GROVE PWS's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does MOUNTAIN GROVE PWS have any EPA violations?
Yes, MOUNTAIN GROVE PWS has 25 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, RPT, MCL. 12 are health-based violations.
How many people does MOUNTAIN GROVE PWS serve?
MOUNTAIN GROVE PWS serves approximately 4,789 people, Missouri. The system provides water to 1 community: Mountain Grove.
What type of water does MOUNTAIN GROVE PWS provide?
MOUNTAIN GROVE PWS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is MO5010550.
How does MOUNTAIN GROVE PWS compare to other utilities in Missouri?
MOUNTAIN GROVE PWS scores 27/100 with a grade of D (poor). This score suggests significant water quality concerns relative to other utilities. Visit our Missouri state page for a full comparison of water systems.