A81/100
The Colony Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 45,367 residents · Texas
What's In The Colony's Tap Water?
69
Contaminants Tested
0
Exceed EPA Limits
2
Above EPA Goals
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
chlorate | 830.00 µg/L | — | Above Goal |
Lead (90th percentile) | < 0.001 mg/L | 0.015 mg/L | Above Goal |
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, 2022 – November 10, 2022Rule: 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
Water Utility Details
CITY OF THE COLONY
Population Served
45,367
Water Source
Purchased Surface Water
System ID
TX0610081
Frequently Asked Questions About The Colony Water
Is The Colony tap water safe to drink?
The Colony, Texas tap water receives a grade of A (81/100), which is considered excellent. Out of 69 contaminants tested, none exceed EPA maximum contaminant levels (MCLs) and 2 exceed health guidelines (MCLGs). While the water meets federal standards, some residents may still choose to use a filter for additional peace of mind.
What contaminants are in The Colony's water?
Of the 69 contaminants tested in The Colony's water supply, the most notable include Lead (90th percentile), chlorate. No contaminants exceed EPA legal limits. 2 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does The Colony have any water quality violations?
Yes, The Colony has 5 EPA violation(s) on record, with the most recent in 2022. Violation types include MR, Other, MCL. 2 of these are health-based violations, which are the most serious category.
Do I need a water filter in The Colony?
The Colony water meets EPA standards, so a filter is not strictly necessary. However, some residents prefer the added security of a water filter. EPA health goals (MCLGs) are stricter than legal limits and are set at levels with zero expected health risk. 2 contaminant(s) exceed these stricter goals.
Where does The Colony's tap water come from?
The Colony's drinking water is sourced from purchased surface water and supplied by CITY OF THE COLONY. The system serves approximately 45,367 people. Surface water sources include rivers, lakes, and reservoirs.
How often is The Colony's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. The Colony's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does The Colony's water compare to other cities in Texas?
The Colony's water quality score of 81/100 earns a grade of A, which is considered excellent. This places The Colony among the better-performing water systems in Texas. Visit our Texas state page to see how all cities in the state compare.
What should I do if I'm concerned about The Colony's water quality?
If you have concerns about The Colony's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (CITY OF THE COLONY) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.