A81/100
LAKE TANGLEWOOD WATER SYSTEM — Water Quality Report 2026
Serving 1,300 people · Texas
Water Source
Groundwater
County
—
System ID
TX1910013
Violations
8
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
3
Violations (last 5yr)
0
Unresolved
1
Health-Related
TIER 3Resolved
Disinfection byproduct treatment technique failure
When: May 15, 2025 – July 29, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
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 – April 22, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved
Treatment technique violation
When: October 17, 2024 – April 22, 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 LAKE TANGLEWOOD WATER SYSTEM
Is LAKE TANGLEWOOD WATER SYSTEM water safe to drink?
LAKE TANGLEWOOD WATER SYSTEM water receives a grade of A (81/100), which is considered excellent. Out of 1 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has LAKE TANGLEWOOD WATER SYSTEM detected?
1 contaminants were tested in LAKE TANGLEWOOD WATER SYSTEM's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does LAKE TANGLEWOOD WATER SYSTEM have any EPA violations?
Yes, LAKE TANGLEWOOD WATER SYSTEM has 8 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, RPT, TT. 2 are health-based violations.
How many people does LAKE TANGLEWOOD WATER SYSTEM serve?
LAKE TANGLEWOOD WATER SYSTEM serves approximately 1,300 people, Texas.
What type of water does LAKE TANGLEWOOD WATER SYSTEM provide?
LAKE TANGLEWOOD WATER SYSTEM sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is TX1910013.
How does LAKE TANGLEWOOD WATER SYSTEM compare to other utilities in Texas?
LAKE TANGLEWOOD WATER SYSTEM scores 81/100 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.