Public water system record
Lago Vista Water System
Serves an area of Guadalupe County, TX · 54 people served
Federal records show 1 health-based violation and 126 monitoring/reporting issues for Lago Vista Water System in the last ten years, including an unresolved LEAD AND COPPER RULE REVISIONS violation.
System profile
Source water
Groundwater
ZIP
78616
EPA system ID
TX0940029
- Health-based violations, last 10 years
- 1
- Resolved
- 0
- Unresolved
- 1
- Any acute record
- No
- Monitoring issues, last 10 years
- 126
Key facts
- Lago Vista Water System draws water from 1 well.
- Most recent formal enforcement: compliance order with a penalty by Texas, January 2020.
- Record on file since 1992, with 10 health-based violations before October 19, 2016.
Check whether Lago Vista Water System 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.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
|
350 | Oct 17, 2024 | Active | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Revised Total Coliform Rule
Monitoring violation
|
Dec 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Revised Total Coliform Rule
Monitoring violation
|
Nov 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 |
|
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.
|
|
Public Notice
OTHER
|
May 1, 2025 | Active |
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Oct 17, 2024 | Active |
|
Public Notice
OTHER
|
Mar 22, 2024 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Oct 1, 2021 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Oct 1, 2021 | Resolved |
|
Public Notice
OTHER
|
Mar 9, 2020 | Resolved |
|
Public Notice
OTHER
|
Feb 29, 2020 | Resolved |
|
Public Notice
OTHER
|
Feb 1, 2020 | Resolved |
|
Public Notice
OTHER
|
Jan 12, 2020 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jan 1, 2020 | Resolved |
|
Public Notice
OTHER
|
Jan 1, 2020 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Dec 1, 2019 | Resolved |
|
Public Notice
OTHER
|
Dec 1, 2019 | Resolved |
|
Public Notice
OTHER
|
Nov 7, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Nov 1, 2019 | Resolved |
|
Public Notice
OTHER
|
Nov 1, 2019 | Resolved |
|
Public Notice
OTHER
|
Oct 4, 2019 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Oct 1, 2019 | Resolved |
|
Public Notice
OTHER
|
Oct 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Sep 1, 2019 | Resolved |
|
Public Notice
OTHER
|
Sep 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Aug 1, 2019 | Resolved |
|
Public Notice
OTHER
|
Aug 1, 2019 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jul 1, 2019 | Resolved |
|
Public Notice
OTHER
|
Jul 1, 2019 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Public Notice
OTHER
|
Jun 27, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jun 1, 2019 | Resolved |
|
Public Notice
OTHER
|
Jun 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
May 1, 2019 | Resolved |
|
Public Notice
OTHER
|
May 1, 2019 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Apr 1, 2019 | Resolved |
|
Public Notice
OTHER
|
Apr 1, 2019 | Resolved |
|
Public Notice
OTHER
|
Mar 29, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Mar 1, 2019 | Resolved |
|
Public Notice
OTHER
|
Mar 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Feb 1, 2019 | Resolved |
|
Public Notice
OTHER
|
Feb 1, 2019 | Resolved |
|
Nitrate
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Styrene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Toluene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Benzene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jan 1, 2019 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Dec 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Nov 1, 2018 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Oct 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Sep 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Aug 1, 2018 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jul 1, 2018 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jun 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
May 1, 2018 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Apr 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Mar 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Feb 1, 2018 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Styrene
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Toluene
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Benzene
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Nitrate
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jan 1, 2018 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2017 | Resolved |
|
Public Notice
OTHER
|
Oct 1, 2014 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2014 | Resolved |
|
E. coli
Monitoring and reporting
|
Aug 14, 2014 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Apr 1, 2014 | Resolved |
|
E. coli
Monitoring and reporting
|
Nov 12, 2013 | Resolved |
|
E. coli
Monitoring and reporting
|
Oct 10, 2013 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Sep 29, 2013 | Resolved |
|
E. coli
Monitoring and reporting
|
Jul 1, 2013 | Resolved |
|
Public Notice
OTHER
|
Jan 1, 2012 | Resolved |
|
Public Notice
OTHER
|
May 9, 2008 | Resolved |
Full record since 1992
EPA's records for Lago Vista Water System go back to 1992. Before October 19, 2016 they list 10 health-based violations (9 resolved, 1 archived by EPA without a recorded fix) and 186 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 0 | 13 |
| 2000s | 7 | 90 |
| 2010 to October 18, 2016 | 3 | 83 |
| October 19, 2016 to 2019 | 0 | 100 |
| 2020s | 1 | 16 |
Most recent health-based violation before October 19, 2016: Total Coliform, began July 2014, Resolved.
Show all 10 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2014 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 2013 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 2010 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2009 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
May 1, 2007 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 2005 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 2005 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2004 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 2004 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Apr 1, 2004 | Resolved |
Enforcement actions
Texas regulators and EPA took 6 formal enforcement actions against Lago Vista Water System between 1996 and 2020. The most recent was a compliance order with a penalty in January 2020.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Jan 21, 2020 | Texas | Compliance order with a penalty | 10 violations: Chlorine, E. coli |
| Mar 1, 2019 | EPA | Compliance order (no penalty) | 31 violations: Revised Total Coliform Rule, Public Notice |
| Aug 25, 2014 | Texas | Compliance order with a penalty | 74 violations: Public Notice, Consumer Confidence Rule, Chlorine, Lead and Copper Rule, E. coli |
| Jun 7, 2009 | Texas | Compliance order with a penalty | 3 violations: Consumer Confidence Rule |
| May 3, 2000 | EPA | Compliance order (no penalty) | 1 violation: Consumer Confidence Rule |
| Sep 20, 1996 | EPA | Compliance order (no penalty) | 2 violations: Total Coliform |
What the violations mean
LEAD AND COPPER RULE REVISIONS
1 incidentThe system did not complete a treatment step or action that the LEAD AND COPPER RULE REVISIONS requires (a treatment technique violation).
The utility had to notify customers about this violation.
Where the water comes from
Lago Vista Water System draws water from 1 well.
Annual water quality report
Lago Vista Water System 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.
Systems serving 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Lago Vista Water System for a copy.
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