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Public water system record

Lima City

Serves an area of Allen County, OH that includes Lima and Fort Shawnee · 65,619 people served

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

  • OH0200811
  • LIMA
  • OH
  • 65,619 served

System profile

Source water Surface water
ZIP 45801
EPA system ID OH0200811

Verify this system on EPA ECHO →

Health-based violations, last 10 years
3
Resolved
3
Unresolved
0
Any acute record
Yes
Monitoring issues, last 10 years
3

Key facts

  • Lima City draws water from 10 surface water intakes and 6 reservoirs.
  • Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.087 mg/L, federal limit 0.08 mg/L (1.1 times the limit), 2024.
  • Record on file since 1992, with 0 health-based violations before October 19, 2016.
  • Lead pipe inventory: 2,713 lead and 23,367 unknown out of 26,365 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 0.087 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 220 Apr 1, 2024 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 Jan 1, 2022 Resolved No
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
 120 Dec 1, 2016 Resolved Yes

Monitoring and reporting issues

Since October 2016

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

Issue Start date Status
Public Notice
OTHER
 Feb 14, 2019 Resolved
Interim Enhanced Surface Water Treatment Rule
OTHER
 Feb 1, 2018 Resolved
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
 Dec 1, 2016 Resolved

Full record since 1992

EPA's records for Lima City go back to 1992. Before October 19, 2016 they list no health-based violations and 10 monitoring or reporting violations.

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

What the violations mean

Total Trihalomethanes (TTHMs)

2 incidents

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

Interim Enhanced Surface Water Treatment Rule

1 incident

The system did not meet a filtration or treatment requirement for surface water

Inadequate treatment of surface water can let pathogens such as Cryptosporidium and Giardia through

Where the water comes from

Lima City draws water from 10 surface water intakes and 6 reservoirs. 1 other community water system and 1 smaller public system such as schools, businesses or campgrounds buy water from Lima City.

Community systems that buy water from it

Annual water quality report

Lima City 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 Ohio.

Certified drinking water labs by state EPA guidance for private wells