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Public water system record

City of Sterling

Serves Sterling, Logan County, CO · 15,100 people served

Federal records show no health-based violations and 16 monitoring/reporting issues for City of Sterling in the last ten years.

  • CO0138045
  • STERLING
  • CO
  • 15,100 served

System profile

Source water Groundwater under direct influence
ZIP 80751
EPA system ID CO0138045

Verify this system on EPA ECHO →

Health-based violations, last 10 years
0
Resolved
0
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
16

Key facts

  • City of Sterling draws water from 13 wells.
  • Most recent enforcement action: boil water order by Colorado, October 2018.
  • Record on file since 1985, with 27 health-based violations before October 19, 2016.
  • Lead pipe inventory: 164 lead and 0 unknown out of 4,818 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.

None since October 2016.

Monitoring and reporting issues

Since October 2016

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

Issue Start date Status
Cryptosporidium
Monitoring and reporting
 Aug 1, 2023 Resolved
E. coli
Monitoring and reporting
 Aug 1, 2023 Resolved
Turbidity
Monitoring and reporting
 Aug 1, 2023 Resolved
Turbidity
Monitoring and reporting
 Jul 1, 2023 Resolved
Cryptosporidium
Monitoring and reporting
 Jun 1, 2023 Resolved
Cryptosporidium
Monitoring and reporting
 May 1, 2023 Resolved
Lead and Copper Rule
Monitoring and reporting
 Oct 1, 2022 Resolved
Lead and Copper Rule
Monitoring and reporting
 Jul 1, 2022 Resolved
Public Notice
OTHER
 Apr 5, 2021 Resolved
Public Notice
OTHER
 Jan 5, 2021 Resolved
Revised Total Coliform Rule
Monitoring violation
 Nov 1, 2020 Resolved
Surface Water Treatment Rule
Monitoring and reporting
 Nov 1, 2020 Resolved
Chlorine
Monitoring and reporting
 Oct 1, 2020 Resolved
Lead and Copper Rule
Monitoring and reporting
 Jul 1, 2020 Resolved
Public Notice
OTHER
 Mar 3, 2019 Resolved
E. coli
Monitoring and reporting
 Sep 1, 2018 Resolved

Full record since 1985

EPA's records for City of Sterling go back to 1985. Before October 19, 2016 they list 27 health-based violations (25 resolved, 2 archived by EPA without a recorded fix) and 31 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1980s 1 0
1990s 1 1
2000s 8 29
2010 to October 18, 2016 17 1
October 19, 2016 to 2019 0 2
2020s 0 14

Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began July 2013, Resolved.

Show all 27 health-based violations before October 19, 2016
Contaminant Start date Status
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.123 mg/L, federal limit 0.08 mg/L (1.5 times the limit)
 Jul 1, 2013 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.115 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
 Apr 1, 2013 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.112 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
 Jan 1, 2013 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.115 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
 Oct 1, 2012 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.109 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
 Jul 1, 2012 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.108 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
 Apr 1, 2012 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 31 µg/L, federal limit 30 µg/L (at or just above the limit)
 Jan 1, 2012 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.106 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 Jan 1, 2012 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.09 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 Oct 1, 2011 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 33 µg/L, federal limit 30 µg/L (1.1 times the limit)
 Oct 1, 2011 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 34 µg/L, federal limit 30 µg/L (1.1 times the limit)
 Jul 1, 2011 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 39 µg/L, federal limit 30 µg/L (1.3 times the limit)
 Jan 1, 2011 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 41 µg/L, federal limit 30 µg/L (1.4 times the limit)
 Jan 1, 2011 Resolved
Total Coliform
Contaminant limit exceeded
 Aug 1, 2010 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 31 µg/L, federal limit 30 µg/L (at or just above the limit)
 Jan 1, 2010 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 46 µg/L, federal limit 30 µg/L (1.5 times the limit)
 Jan 1, 2010 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 33 µg/L, federal limit 30 µg/L (1.1 times the limit)
 Jan 1, 2010 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 48 µg/L, federal limit 30 µg/L (1.6 times the limit)
 Jan 1, 2009 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 37 µg/L, federal limit 30 µg/L (1.2 times the limit)
 Jul 1, 2008 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 43 µg/L, federal limit 30 µg/L (1.4 times the limit)
 Jul 1, 2008 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 49 µg/L, federal limit 30 µg/L (1.6 times the limit)
 Apr 1, 2008 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 44 µg/L, federal limit 30 µg/L (1.5 times the limit)
 Jan 1, 2008 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.083 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 Oct 1, 2007 Archived
Combined Uranium
Contaminant limit exceeded
Measured 43 µg/L, federal limit 30 µg/L (1.4 times the limit)
 Oct 1, 2007 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.091 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 Jul 1, 2007 Archived
Total Coliform (acute)
Contaminant limit exceeded
 Oct 1, 1991 Resolved
Nitrate-Nitrite (acute)
Contaminant limit exceeded
 Apr 21, 1985 Resolved

Enforcement actions

Colorado regulators took 1 formal enforcement action against City of Sterling and issued 1 boil water order between 2008 and 2018. The most recent was a boil water order in October 2018.

Date By Action Violations covered
Oct 10, 2018 Colorado Boil water order 1 violation
Sep 2, 2008 Colorado Compliance order (no penalty) 23 violations (23 health-based): Total Trihalomethanes (TTHMs), Combined Uranium

Where the water comes from

City of Sterling draws water from 13 wells.

Annual water quality report

City of Sterling 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