TapSafetyReport
F0/100

CS Q MOUNTAIN WATER COMPANY — Water Quality Report 2026

Serving 1,224 people · Missouri

Water Source
Groundwater
County
—
System ID
AZ0415096
Violations
110

Contaminant Test Results

1 contaminant above EPA health goals
ContaminantDetectedLimit (MCL)Status
Lead (90th percentile)
0.001 mg/L0.015 mg/LAbove Goal

EPA Violation History

5

Violations (last 5yr)

0

Unresolved

0

Health-Related

TIER 3Resolved

Monitoring / Reporting Violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: January 1, 2025 – March 24, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Failed to issue ongoing public notification

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: October 1, 2023 – October 11, 2024Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Monitoring violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: March 1, 2022 – April 21, 2022Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Monitoring violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: December 1, 2021 – February 1, 2022Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Monitoring violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: July 1, 2021 – September 2, 2021Rule: Total Coliform RuleEnforcement: 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 CS Q MOUNTAIN WATER COMPANY

Is CS Q MOUNTAIN WATER COMPANY water safe to drink?

CS Q MOUNTAIN WATER COMPANY water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 110 violation(s) are on record. Customers may want to consider using a water filter.

What contaminants has CS Q MOUNTAIN WATER COMPANY detected?

1 contaminants were tested in CS Q MOUNTAIN WATER COMPANY's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).

Does CS Q MOUNTAIN WATER COMPANY have any EPA violations?

Yes, CS Q MOUNTAIN WATER COMPANY has 110 EPA violation(s) on record, with the most recent in 2025. Violation types include MR, RPT, Other. 4 are health-based violations.

How many people does CS Q MOUNTAIN WATER COMPANY serve?

CS Q MOUNTAIN WATER COMPANY serves approximately 1,224 people, Missouri. The system provides water to 1 community: Quartzsite.

What type of water does CS Q MOUNTAIN WATER COMPANY provide?

CS Q MOUNTAIN WATER COMPANY sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is AZ0415096.

How does CS Q MOUNTAIN WATER COMPANY compare to other utilities in Missouri?

CS Q MOUNTAIN WATER COMPANY scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Missouri state page for a full comparison of water systems.

Cities Served

Quartzsite