Town of Frederick

Published drinking-water records and contacts for Town of Frederick. System CO0162288. Review sources and dates; not a real-time water assessment.

System ID: CO0162288
State or territory: CO
Published population served: 17173
System type (source code): CWS

Published records and dates

PFAS / lithium (EPA UCMR 5): 120 — 2025-01-15 – 2025-12-01
Lead and copper monitoring summaries: 21 — 1992-07-01 – 2025-12-31

Missing records here do not mean the provider did not test. Published records are not a real-time assessment of your tap water.

Published testing results

Selected recent records are shown below. Different sampling locations and dates are not interchangeable. These excerpts are not a complete testing history.

“<” means below the stated reporting limit, not zero. A reported measurement alone is not a safety verdict. Read an example

EPA UCMR 5 — most recent imported sample per substance
Substance	Published result	Reporting limit	Sample date	Sampling location
11Cl-PF3OUdS	< 0.005 µg/L	0.005 µg/L	2025-12-01	Purchased Water CArter Lake / EP001
4:2 FTS	< 0.003 µg/L	0.003 µg/L	2025-12-01	Purchased Water CArter Lake / EP001
6:2 FTS	< 0.005 µg/L	0.005 µg/L	2025-12-01	Purchased Water CArter Lake / EP001
8:2 FTS	< 0.005 µg/L	0.005 µg/L	2025-12-01	Purchased Water CArter Lake / EP001
9Cl-PF3ONS	< 0.002 µg/L	0.002 µg/L	2025-12-01	Purchased Water CArter Lake / EP001
ADONA	< 0.003 µg/L	0.003 µg/L	2025-12-01	Purchased Water CArter Lake / EP001
HFPO-DA	< 0.005 µg/L	0.005 µg/L	2025-12-01	Purchased Water CArter Lake / EP001
NEtFOSAA	< 0.005 µg/L	0.005 µg/L	2025-10-07	Purchased Water CArter Lake / EP001
NFDHA	< 0.02 µg/L	0.02 µg/L	2025-12-01	Purchased Water CArter Lake / EP001
NMeFOSAA	< 0.006 µg/L	0.006 µg/L	2025-10-07	Purchased Water CArter Lake / EP001
PFBA	< 0.005 µg/L	0.005 µg/L	2025-12-01	Purchased Water CArter Lake / EP001
PFBS	< 0.003 µg/L	0.003 µg/L	2025-12-01	Purchased Water CArter Lake / EP001
PFDA	< 0.003 µg/L	0.003 µg/L	2025-12-01	Purchased Water CArter Lake / EP001
PFDoA	< 0.003 µg/L	0.003 µg/L	2025-12-01	Purchased Water CArter Lake / EP001
PFEESA	< 0.003 µg/L	0.003 µg/L	2025-12-01	Purchased Water CArter Lake / EP001
PFHpA	< 0.003 µg/L	0.003 µg/L	2025-12-01	Purchased Water CArter Lake / EP001
PFHpS	< 0.003 µg/L	0.003 µg/L	2025-12-01	Purchased Water CArter Lake / EP001
PFHxA	< 0.003 µg/L	0.003 µg/L	2025-12-01	Purchased Water CArter Lake / EP001
PFHxS	< 0.003 µg/L	0.003 µg/L	2025-12-01	Purchased Water CArter Lake / EP001
PFMBA	< 0.003 µg/L	0.003 µg/L	2025-12-01	Purchased Water CArter Lake / EP001
PFMPA	< 0.004 µg/L	0.004 µg/L	2025-12-01	Purchased Water CArter Lake / EP001
PFNA	< 0.004 µg/L	0.004 µg/L	2025-12-01	Purchased Water CArter Lake / EP001
PFOA	< 0.004 µg/L	0.004 µg/L	2025-12-01	Purchased Water CArter Lake / EP001
PFOS	< 0.004 µg/L	0.004 µg/L	2025-12-01	Purchased Water CArter Lake / EP001
PFPeA	< 0.003 µg/L	0.003 µg/L	2025-12-01	Purchased Water CArter Lake / EP001
PFPeS	< 0.004 µg/L	0.004 µg/L	2025-12-01	Purchased Water CArter Lake / EP001
PFTA	< 0.008 µg/L	0.008 µg/L	2025-10-07	Purchased Water CArter Lake / EP001
PFTrDA	< 0.007 µg/L	0.007 µg/L	2025-10-07	Purchased Water CArter Lake / EP001
PFUnA	< 0.002 µg/L	0.002 µg/L	2025-12-01	Purchased Water CArter Lake / EP001
lithium	< 9 µg/L	9 µg/L	2025-10-07	Purchased Water CArter Lake / EP001

Download all EPA UCMR 5 records (CSV)

Lead and copper: 90th-percentile summaries

These describe a monitoring period across sampled locations, not the result at your home. How to read the 90th percentile

Eight most recent imported monitoring summaries
Substance	Published 90th percentile	Monitoring period	Source quarter
Lead (PB90)	0.0029 mg/L	2023-01-01 – 2025-12-31	2026Q3
Lead (PB90)	0.0044 mg/L	2021-01-01 – 2021-12-31	2026Q3
Lead (PB90)	0.0028 mg/L	2020-01-01 – 2020-12-31	2026Q3
Lead (PB90)	0.0037 mg/L	2019-01-01 – 2019-12-31	2026Q3
Lead (PB90)	0.0059 mg/L	2018-01-01 – 2018-12-31	2026Q3
Lead (PB90)	0.0058 mg/L	2017-01-01 – 2017-12-31	2026Q3
Lead (PB90)	0.0126 mg/L	2016-01-01 – 2016-12-31	2026Q3
Lead (PB90)	0.0154 mg/L	2015-01-01 – 2015-12-31	2026Q3

Published compliance history

6 imported records. Status is as recorded in the source; historical records are not current advisories. Missing records do not establish that no violations occurred.

Twenty most recent imported compliance records
Rule / record	Period	Recorded status	Health-based (EPA classification)	Source quarter
Lead and Copper Rule / Follow-up Or Routine LCR Tap M/R	2024-10-01 – —	Unaddressed	No	2026Q3
Public Notice Rule and Revised PN Rule / Public Notification Violation without NPDWR Violation	2021-08-31 – —	Resolved	No	2026Q3
Stage 2 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP)	2021-07-01 – 2021-09-30	Resolved	No	2026Q3
Stage 2 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP)	2021-07-01 – 2021-09-30	Resolved	No	2026Q3
Lead and Copper Rule / Lead Consumer Notice	2020-01-01 – —	Resolved	No	2026Q3
Consumer Confidence Rule / Consumer Confidence Report Complete Failure to Report	1999-10-19 – —	Addressed	No	2026Q3

Source dates and refresh checks

A refresh check is not a sample date. Publication periods, sample dates and checks are shown separately.

EPA SDWIS lead/copper summaries and service areas — source period: — – —; last checked: 2026-10-17
EPA SDWIS contacts and compliance records — source period: — – —; last checked: 2026-10-17
EPA UCMR 5 sample results — source period: 2023-01-03 – 2026-06-17; last checked: 2026-10-17

Administrative contact (EPA filing)

Reester, Keith: 720-382-5805

An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.

Official state resources · How to read these records