A100/100
CORNERSTONES MUD — Water Quality Report 2026
Serving 5,331 people · Texas
Water Source
Groundwater
County
—
System ID
TX1011692
Violations
0
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
This system has a clean compliance history.
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 CORNERSTONES MUD
Is CORNERSTONES MUD water safe to drink?
CORNERSTONES MUD water receives a grade of A (100/100), which is considered excellent. Out of 31 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has CORNERSTONES MUD detected?
31 contaminants were tested in CORNERSTONES MUD's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does CORNERSTONES MUD have any EPA violations?
No, CORNERSTONES MUD has zero EPA violations on record. This indicates consistent compliance with federal drinking water standards.
How many people does CORNERSTONES MUD serve?
CORNERSTONES MUD serves approximately 5,331 people, Texas.
What type of water does CORNERSTONES MUD provide?
CORNERSTONES MUD sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is TX1011692.
How does CORNERSTONES MUD compare to other utilities in Texas?
CORNERSTONES MUD scores 100/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Texas state page for a full comparison of water systems.