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Public water system record

Seminole County Northwest

Serves an area of Seminole County, FL that includes Sanford and Heathrow · 31,986 people served

Federal records show 3 health-based violations and 1 monitoring/reporting issue for Seminole County Northwest in the last ten years. The most serious issue in this window was a resolved Total Trihalomethanes (TTHMs) violation.

  • FL3594107
  • WINTER PARK
  • FL
  • 31,986 served

System profile

Source water Groundwater
ZIP 32792
EPA system ID FL3594107

Verify this system on EPA ECHO →

Health-based violations, last 10 years
3
Resolved
3
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
1

Key facts

  • Seminole County Northwest draws water from 15 wells.
  • Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 87.4733 µg/L, federal limit 80 µg/L (1.1 times the limit), 2023.
  • Most recent formal enforcement: compliance order (no penalty) by Florida, December 2023.
  • Record on file since 1991, with 2 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 768 unknown out of 16,328 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 87.4733 µg/L, federal limit 80 µg/L (1.1 times the limit)
 220 Jul 1, 2023 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 86.9475 µg/L, federal limit 80 µg/L (1.1 times the limit)
 220 Apr 1, 2023 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 85.5425 µg/L, federal limit 80 µg/L (1.1 times the limit)
 220 Jan 1, 2023 Resolved No

Monitoring and reporting issues

Since October 2016

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

Issue Start date Status
Consumer Confidence Rule
OTHER
 Jul 1, 2018 Resolved

Full record since 1991

EPA's records for Seminole County Northwest go back to 1991. Before October 19, 2016 they list 2 health-based violations (2 archived by EPA without a recorded fix) and 4 monitoring or reporting violations.

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

Most recent health-based violation before October 19, 2016: Total Coliform, began May 2004, Archived.

Show all 2 health-based violations before October 19, 2016
Contaminant Start date Status
Total Coliform
Contaminant limit exceeded
 May 1, 2004 Archived
Total Coliform
Contaminant limit exceeded
 Apr 1, 2000 Archived

Enforcement actions

Florida regulators took 1 formal enforcement action against Seminole County Northwest in 2023. The most recent was a compliance order (no penalty) in December 2023.

Date By Action Violations covered
Dec 4, 2023 Florida Compliance order (no penalty) 3 violations (3 health-based): Total Trihalomethanes (TTHMs)

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

Where the water comes from

Seminole County Northwest draws water from 15 wells. It also has an emergency connection to City of Lake Mary.

Emergency or part-time connections to

Annual water quality report

Seminole County Northwest 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 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.

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 Florida.

Certified drinking water labs by state EPA guidance for private wells