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Public water system record

DCWS I-95

On record as serving Harleyville, Dorchester County, SC · Serves 102 people

Federal records show 4 health-based violations and no monitoring/reporting issues for DCWS I-95 in the last ten years. The most serious issue in this window was a resolved Total Trihalomethanes (TTHMs) violation.

  • SC1870914
  • SUMMERVILLE
  • SC
  • 102 served

System profile

Source water Groundwater
ZIP 29483
EPA system ID SC1870914

Verify this system on EPA ECHO →

Health-based violations, last 10 years
4
Resolved
4
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
0

Key facts

  • DCWS I-95 draws water from 1 well.
  • Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.1 mg/L, federal limit 0.08 mg/L (1.3 times the limit), 2021.
  • Most recent formal enforcement: administrative penalty by South Carolina, May 2021.
  • Record on file since 2010, with 4 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 56 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 0.092 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
 220 Oct 1, 2021 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, 2021 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.1 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 220 Apr 1, 2021 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.091 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 220 Jan 1, 2021 Resolved No

Full record since 2010

EPA's records for DCWS I-95 go back to 2010. Before October 19, 2016 they list 4 health-based violations (4 resolved) and no monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
2010 to October 18, 2016 4 0
2020s 4 0

Most recent health-based violation before October 19, 2016: Haloacetic Acids (HAA5), began January 2012, Resolved.

Show all 4 health-based violations before October 19, 2016
Contaminant Start date Status
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.064 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
 Jan 1, 2012 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.071 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
 Oct 1, 2011 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.071 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
 Jul 1, 2011 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.067 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
 Apr 1, 2010 Resolved

Enforcement actions

South Carolina regulators took 4 formal enforcement actions against DCWS I-95 between 2012 and 2021. The most recent was an administrative penalty in May 2021.

Date By Action Violations covered
May 4, 2021 South Carolina Administrative penalty 4 violations (4 health-based): Total Trihalomethanes (TTHMs)
May 4, 2021 South Carolina Compliance order with a penalty 4 violations (4 health-based): Total Trihalomethanes (TTHMs)
Mar 19, 2012 South Carolina Administrative penalty 3 violations (3 health-based): Haloacetic Acids (HAA5)
Mar 19, 2012 South Carolina Compliance order with a penalty 3 violations (3 health-based): Haloacetic Acids (HAA5)

What the violations mean

Total Trihalomethanes (TTHMs)

4 incidents

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

Where the water comes from

DCWS I-95 draws water from 1 well.

Annual water quality report

DCWS I-95 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 DCWS I-95 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 South Carolina.

Certified drinking water labs by state EPA guidance for private wells