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Public water system record

Swenson WSC

Serves an area of Stonewall County, TX · 49 people served

Federal records show 4 health-based violations and 9 monitoring/reporting issues for Swenson WSC in the last ten years. The most serious issue in this window was a Total Trihalomethanes (TTHMs) violation that EPA lists as archived, not resolved.

  • TX2170002
  • ASPERMONT
  • TX
  • 49 served

System profile

Source water Purchased surface water
ZIP 79502
EPA system ID TX2170002

Verify this system on EPA ECHO →

Health-based violations, last 10 years
4
Resolved
1
Unresolved
0
Archived by EPA
3
Any acute record
No
Monitoring issues, last 10 years
9

Key facts

  • Swenson WSC buys its water from City of Aspermont.
  • Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.14 mg/L, federal limit 0.08 mg/L (1.8 times the limit), 2025.
  • Record on file since 1985, with 4 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 1 unknown out of 28 service lines.

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Health-based violations

Since October 2016

Violation 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 0.14 mg/L, federal limit 0.08 mg/L (1.8 times the limit)
 220 Oct 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.124 mg/L, federal limit 0.08 mg/L (1.6 times the limit)
 220 Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.128 mg/L, federal limit 0.08 mg/L (1.6 times the limit)
 220 Apr 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
 350 Oct 17, 2024 Resolved No

Monitoring and reporting issues

Since October 2016

Missed tests or reports, not contaminants found above a limit.

Issue Start date Status
LEAD AND COPPER RULE REVISIONS
RPT
 Oct 17, 2024 Resolved
Revised Total Coliform Rule
Monitoring violation
 Feb 1, 2021 Resolved
Chlorine
Monitoring and reporting
 Jul 1, 2020 Resolved
Chlorine
Monitoring and reporting
 Jul 1, 2019 Resolved
Public Notice
OTHER
 Oct 25, 2018 Resolved
Lead and Copper Rule
Monitoring and reporting
 Dec 30, 2017 Resolved
Lead and Copper Rule
Monitoring and reporting
 Oct 1, 2017 Resolved
Chlorine
Monitoring and reporting
 Apr 1, 2017 Resolved
Public Notice
OTHER
 Mar 1, 2008 Active

Full record since 1985

EPA's records for Swenson WSC go back to 1985. Before October 19, 2016 they list 4 health-based violations (1 resolved, 3 archived by EPA without a recorded fix) and 15 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1980s 2 0
1990s 1 3
2000s 0 6
2010 to October 18, 2016 1 6
October 19, 2016 to 2019 0 5
2020s 4 3

Most recent health-based violation before October 19, 2016: Nitrate (acute), began July 2012, Resolved.

Show all 4 health-based violations before October 19, 2016
Contaminant Start date Status
Nitrate (acute)
Contaminant limit exceeded
Measured 13 mg/L, federal limit 10 mg/L (1.3 times the limit)
 Jul 1, 2012 Resolved
Nitrate (acute)
Contaminant limit exceeded
 Jul 26, 1990 Archived
Nitrate (acute)
Contaminant limit exceeded
 Mar 12, 1987 Archived
Nitrate (acute)
Contaminant limit exceeded
 Jun 4, 1985 Archived

What the violations mean

Total Trihalomethanes (TTHMs)

3 incidents

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

LEAD AND COPPER RULE REVISIONS

1 incident

The 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

Swenson WSC buys its water from City of Aspermont. It lists no wells or intakes of its own.

Buys water from

Annual water quality report

Swenson 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.

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 Swenson WSC 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