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Public water system record

City of Ft Collins

Serves Fort Collins, Larimer County, CO · 179,901 people served

Federal records show 1 health-based violation and 10 monitoring/reporting issues for City of Ft Collins in the last ten years. The most serious issue in this window was a resolved Interim Enhanced Surface Water Treatment Rule violation.

  • CO0135291
  • FORT COLLINS
  • CO
  • 179,901 served

System profile

Source water Surface water
ZIP 80521
EPA system ID CO0135291

Verify this system on EPA ECHO →

Health-based violations, last 10 years
1
Resolved
1
Unresolved
0
Any acute record
Yes
Monitoring issues, last 10 years
10

Key facts

  • City of Ft Collins draws water from 3 surface water intakes (1 of them for emergency, seasonal or other part-time use).
  • Record on file since 2002, with 0 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 35,894 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
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
 120 Dec 1, 2017 Resolved Yes

Monitoring and reporting issues

Since October 2016

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

Issue Start date Status
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
 Jul 1, 2024 Resolved
Surface Water Treatment Rule
Monitoring and reporting
 Jul 1, 2024 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
 Apr 1, 2021 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Apr 1, 2021 Resolved
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
 Dec 1, 2017 Resolved
Surface Water Treatment Rule
Monitoring and reporting
 May 1, 2017 Resolved
Chlorine
Monitoring and reporting
 Apr 1, 2017 Resolved
Surface Water Treatment Rule
Monitoring and reporting
 Apr 1, 2017 Resolved
Surface Water Treatment Rule
Monitoring and reporting
 Mar 1, 2017 Resolved
Chlorine
Monitoring and reporting
 Jan 1, 2017 Resolved

Full record since 2002

EPA's records for City of Ft Collins go back to 2002. Before October 19, 2016 they list no health-based violations and 7 monitoring or reporting violations.

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

What the violations mean

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

City of Ft Collins draws water from 3 surface water intakes (1 of them for emergency, seasonal or other part-time use). It also buys water from Ft Collins Loveland WD. 8 other community water systems and 2 smaller public systems such as schools, businesses or campgrounds buy water from City of Ft Collins. 2 other public water systems have emergency, seasonal or other part-time connections to City of Ft Collins.

Buys water from

Community systems that buy water from it

Annual water quality report

City of Ft Collins 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 Colorado.

Certified drinking water labs by state EPA guidance for private wells