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Public water system record

McCormick Co W&Sa

Serves an area of McCormick County, SC that includes McCormick and Plum Branch · 8,500 people served

Federal records show 10 health-based violations and 1 monitoring/reporting issue for McCormick Co W&Sa in the last ten years. The most serious issue in this window was a resolved Total Trihalomethanes (TTHMs) violation.

  • SC3520002
  • MCCORMICK
  • SC
  • 8,500 served

System profile

Source water Purchased surface water
ZIP 29835
EPA system ID SC3520002

Verify this system on EPA ECHO →

Health-based violations, last 10 years
10
Resolved
10
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
1

Key facts

  • McCormick Co W&Sa buys its water from Town of Calhoun Falls, McCormick CPW and Columbia County.
  • Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.115 mg/L, federal limit 0.08 mg/L (1.4 times the limit), 2022.
  • Most recent formal enforcement: administrative penalty by South Carolina, April 2019.
  • Record on file since 1992, with 5 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 2,452 unknown out of 4,067 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 0.082 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 220 Jan 1, 2023 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.097 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
 220 Oct 1, 2022 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.115 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
 220 Jul 1, 2022 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.111 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
 220 Apr 1, 2022 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.099 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
 220 Jan 1, 2022 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 220 Oct 1, 2019 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.083 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 220 Jul 1, 2019 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.086 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 220 Apr 1, 2019 Resolved No
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, 2019 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.082 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 220 Oct 1, 2016 Resolved No

Monitoring and reporting issues

Since October 2016

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

Issue Start date Status
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Aug 13, 2014 Active
Enforcement action in place

Full record since 1992

EPA's records for McCormick Co W&Sa go back to 1992. Before October 19, 2016 they list 5 health-based violations (5 resolved) and 10 monitoring or reporting violations.

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

Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began October 2016, Resolved.

Show all 5 health-based violations before October 19, 2016
Contaminant Start date Status
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.082 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 Oct 1, 2016 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.082 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 Apr 1, 2015 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.082 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 Jan 1, 2015 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.085 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 Oct 1, 2014 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.094 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
 Jul 1, 2014 Resolved

Enforcement actions

South Carolina regulators and EPA took 7 formal enforcement actions against McCormick Co W&Sa between 1993 and 2019. The most recent was an administrative penalty in April 2019.

Date By Action Violations covered
Apr 4, 2019 South Carolina Administrative penalty 9 violations (9 health-based): Total Trihalomethanes (TTHMs)
Apr 4, 2019 South Carolina Compliance order with a penalty 9 violations (9 health-based): Total Trihalomethanes (TTHMs)
Nov 4, 2014 South Carolina Administrative penalty 3 violations (2 health-based): Total Trihalomethanes (TTHMs)
Nov 4, 2014 South Carolina Compliance order with a penalty 6 violations (5 health-based): Total Trihalomethanes (TTHMs)
Nov 15, 2010 South Carolina Administrative penalty 2 violations: Stage 2 Disinfection Byproducts Rule
Nov 15, 2010 South Carolina Compliance order with a penalty 2 violations: Stage 2 Disinfection Byproducts Rule
Jul 30, 1993 EPA Compliance order (no penalty) 1 violation: Lead and Copper Rule

What the violations mean

Total Trihalomethanes (TTHMs)

10 incidents

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

Where the water comes from

McCormick Co W&Sa buys its water from Town of Calhoun Falls, McCormick CPW and Columbia County. It lists no wells or intakes of its own.

Buys water from

Annual water quality report

McCormick Co W&Sa 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 South Carolina.

Certified drinking water labs by state EPA guidance for private wells