Public water system record
Jonestown WSC
Serves an area of Travis County, TX that includes Jonestown · 7,902 people served
Federal records show 3 health-based violations and 13 monitoring/reporting issues for Jonestown WSC in the last ten years. The most serious issue in this window was a resolved Total Trihalomethanes (TTHMs) violation.
System profile
- Health-based violations, last 10 years
- 3
- Resolved
- 3
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 13
Key facts
- Jonestown WSC draws water from 1 surface water intake.
- Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.096 mg/L, federal limit 0.08 mg/L (1.2 times the limit), 2019.
- Most recent formal enforcement: compliance order with a penalty by Texas, October 2020.
- Record on file since 2002, with 0 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 2,127 service lines.
Check whether Jonestown WSC 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 |
|---|---|---|---|---|
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.083 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
220 | Jan 1, 2020 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.096 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Oct 1, 2019 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.096 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Jul 1, 2019 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Aug 1, 2025 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Aug 1, 2025 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2025 | Active |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Jul 1, 2025 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Jul 1, 2025 | Resolved |
|
CARBON, TOTAL
Monitoring and reporting
|
Jun 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
CARBON, TOTAL
Monitoring and reporting
|
Jun 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Jun 1, 2025 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Jun 1, 2025 | Resolved |
|
Public Notice
OTHER
|
Mar 11, 2021 | Resolved |
|
Public Notice
OTHER
|
Jun 25, 2020 | Active |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Feb 20, 2020 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Dec 30, 2017 | Resolved |
Full record since 2002
EPA's records for Jonestown WSC go back to 2002. Before October 19, 2016 they list no health-based violations and 13 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 2000s | 0 | 13 |
| October 19, 2016 to 2019 | 2 | 1 |
| 2020s | 1 | 12 |
Enforcement actions
Texas regulators took 1 formal enforcement action against Jonestown WSC in 2020. The most recent was a compliance order with a penalty in October 2020.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Oct 20, 2020 | Texas | Compliance order with a penalty | 4 violations (3 health-based): Total Trihalomethanes (TTHMs) |
What the violations mean
Total Trihalomethanes (TTHMs)
3 incidentsDisinfection byproduct levels exceeded the federal limit
Long-term TTHM exposure may increase bladder cancer risk
Where the water comes from
Jonestown WSC draws water from 1 surface water intake. 1 smaller public system such as schools, businesses or campgrounds buys water from Jonestown WSC.
Annual water quality report
Jonestown WSC 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