Public water system record
Seis Lagos Utility District
Serves Seis Lagos, Collin County, TX · 2,037 people served
Federal records show no health-based violations and 8 monitoring/reporting issues for Seis Lagos Utility District in the last ten years. At least one of these issues remains unresolved.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 8
Key facts
- Seis Lagos Utility District buys its water from North Texas MWD Wylie WTP.
- Record on file since 2014, with 1 health-based violation before October 19, 2016.
- Lead pipe inventory: 0 lead and 276 unknown out of 690 service lines.
Check whether Seis Lagos Utility District serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
None since October 2016.
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2025 | Active |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2025 | Active |
|
Revised Total Coliform Rule
Monitoring violation
|
Mar 1, 2025 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Dec 30, 2016 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Dec 30, 2015 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Apr 1, 2015 | Resolved |
Full record since 2014
EPA's records for Seis Lagos Utility District go back to 2014. Before October 19, 2016 they list 1 health-based violation (1 resolved) and 5 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 2010 to October 18, 2016 | 1 | 5 |
| October 19, 2016 to 2019 | 0 | 2 |
| 2020s | 0 | 4 |
Most recent health-based violation before October 19, 2016: Lead and Copper Rule, began April 2014, Resolved.
Show the health-based violation before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Lead and Copper Rule
Treatment technique failure
|
Apr 1, 2014 | Resolved |
Where the water comes from
Seis Lagos Utility District buys its water from North Texas MWD Wylie WTP. It lists no wells or intakes of its own.
Buys water from
- North Texas MWD Wylie WTP Wylie, TX
Annual water quality report
Seis Lagos Utility District must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Texas.
Certified drinking water labs by state EPA guidance for private wells