A99/100
HARRIS COUNTY MUD 490 — Water Quality Report 2026
Serving 1,293 people · Texas
Water Source
Purchased Surface Water
County
—
System ID
TX1013721
Violations
1
Contaminant Test Results
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
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, 2024 – April 21, 2025Rule: Ground Water 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 HARRIS COUNTY MUD 490
Is HARRIS COUNTY MUD 490 water safe to drink?
HARRIS COUNTY MUD 490 water receives a grade of A (99/100), which is considered excellent. Out of 1 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has HARRIS COUNTY MUD 490 detected?
1 contaminants were tested in HARRIS COUNTY MUD 490's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does HARRIS COUNTY MUD 490 have any EPA violations?
Yes, HARRIS COUNTY MUD 490 has 1 EPA violation(s) on record, with the most recent in 2024. Violation types include MR.
How many people does HARRIS COUNTY MUD 490 serve?
HARRIS COUNTY MUD 490 serves approximately 1,293 people, Texas.
What type of water does HARRIS COUNTY MUD 490 provide?
HARRIS COUNTY MUD 490 sources its water from purchased surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is TX1013721.
How does HARRIS COUNTY MUD 490 compare to other utilities in Texas?
HARRIS COUNTY MUD 490 scores 99/100 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.