- EPA's UCMR 5 testing looked for 30 contaminants here and found 7.
- Lithium: found in 5 of 12 samples, average 4.98 µg/L, highest 15.5 µg/L (EPA UCMR 5 testing, Dec 2024–Dec 2025)
- PFPeA (a PFAS): found in 10 of 12 samples, average 16.9 ppt, highest 102 ppt (EPA UCMR 5 testing, Dec 2024–Mar 2026)
- PFBA (a PFAS): found in 9 of 12 samples, average 8.4 ppt, highest 31.9 ppt (EPA UCMR 5 testing, Dec 2024–Mar 2026)
- PFHxA (a PFAS): found in 10 of 12 samples, average 3.6 ppt, highest 7.1 ppt (EPA UCMR 5 testing, Dec 2024–Mar 2026)
- PFBS (a PFAS): found in 4 of 12 samples, average 1.2 ppt, highest 4.1 ppt (EPA UCMR 5 testing, Dec 2024–Mar 2026)
- PFOS (a PFAS): found in 2 of 12 samples, average 0.70 ppt, highest 4.8 ppt (EPA UCMR 5 testing, Dec 2024–Mar 2026)
- PFHxS (a PFAS): found in 2 of 12 samples, average 0.60 ppt, highest 4.5 ppt (EPA UCMR 5 testing, Dec 2024–Mar 2026)
- Lead, 90th percentile: 3 ppb at the latest result in EPA records for a monitoring period that ran on or after July 1, 2021, at or below EPA's 15 ppb action level (EPA SDWIS, monitoring period Jan 1, 2022–Dec 31, 2024). The 90th percentile is a system-wide measure from homes sampled under EPA's lead rule; it isn't a result for your home.
Public EPA test results
Can you drink League City tap water? What EPA records show
EPA TX0840007 · serves Galveston County, TX · about 149,557 people (EPA SDWIS)
This report shows EPA's federal records for this water system: UCMR 5 testing, lead testing and violations. It isn't a test of the water at your tap, and it has no Water Score.
Public EPA test results
City of League City (EPA TX0840007)
EPA data as of October 14, 2026. For League City's main utility, City of League City: We found no health-based violations in EPA's records for this system (TX0840007) since July 1, 2021, as of October 14, 2026. EPA's UCMR 5 testing looked for 30 contaminants here and found 7. This is public data, not a test of your tap.
What EPA records show for City of League City, as of October 14, 2026
We found no health-based violations in EPA's records for this system (TX0840007) since July 1, 2021, as of October 14, 2026.
Source: EPA ECHO record for City of League City (SDWIS). Data as of October 14, 2026.
Lead, 90th percentile: 3 ppb at the latest result in EPA records for a monitoring period that ran on or after July 1, 2021, at or below EPA's 15 ppb action level (EPA SDWIS, monitoring period Jan 1, 2022–Dec 31, 2024). The 90th percentile is a system-wide measure from homes sampled under EPA's lead rule; it isn't a result for your home.
EPA's UCMR 5 testing looked for 30 contaminants here and found 7.
Source: EPA records (SDWIS, UCMR 5). SDWIS: data as of Oct 14, 2026. EPA UCMR 5 data, samples through June 2026.
Your water bill names your utility.
Does City of League City use chloramine?
EPA treatment records (state-reported) list chloramines for City of League City. EPA record