B75/100
Lancaster Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 40,449 residents · Texas
What's In Lancaster's Tap Water?
76
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2023 – October 31, 2023Enforcement: 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 LANCASTER
Population Served
40,449
Water Source
Purchased Surface Water
System ID
TX0570013
Frequently Asked Questions About Lancaster Water
Is Lancaster tap water safe to drink?
Lancaster, Texas tap water receives a grade of B (75/100), which is considered good. Out of 76 contaminants tested, none exceed EPA maximum contaminant levels (MCLs). While the water meets federal standards, some residents may still choose to use a filter for additional peace of mind.
What contaminants are in Lancaster's water?
76 contaminants were tested in Lancaster's water supply. No contaminants exceed EPA legal limits (MCLs) or health goals (MCLGs), which is a positive indicator of water quality.
Does Lancaster have any water quality violations?
Yes, Lancaster has 9 EPA violation(s) on record, with the most recent in 2023. Violation types include Other, MR, MCL. 4 of these are health-based violations, which are the most serious category.
Do I need a water filter in Lancaster?
Lancaster 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. All contaminants are within health goals.
Where does Lancaster's tap water come from?
Lancaster's drinking water is sourced from purchased surface water and supplied by CITY OF LANCASTER. The system serves approximately 40,449 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Lancaster'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. Lancaster'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 Lancaster's water compare to other cities in Texas?
Lancaster's water quality score of 75/100 earns a grade of B, which is considered good. This is an above-average score compared to many cities nationwide. Visit our Texas state page to see how all cities in the state compare.
What should I do if I'm concerned about Lancaster's water quality?
If you have concerns about Lancaster'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 LANCASTER) 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.