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Community Water System · PWS CO0159055

Frisco Town Of

Frisco, Colorado 80443 - drinking water served from surface water sources to 4,495 people, tracked in EPA SDWIS and UCMR5.

4,495
People served
820
EPA violations
8
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 820 drinking-water violations at Frisco Town Of, 1% of them health-based - above the Colorado per-system average.

820
Total EPA violations on record
1%
Health-based (MCL / treatment failure)
4,495
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Frisco Town Of

Frisco Town Of is a local-owned community water system that delivers drinking water to 4,495 residents in Frisco, Colorado (Summit County) through 2,126 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 820 total violations for this system , of which 8 (1%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 800 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Interim Enhanced Surface Water Treatment Rule, recorded in 30 violations (MR). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

Across Colorado, EPA tracks 2,193 public water systems serving 7,473,456 people, with 238,796 cumulative violations and 30,589 health-based violations on record. About 93% of systems in the state carry at least one violation, and state-wide the average per system is 108.9 violations. Statewide, 98 of 163 UCMR5-tested systems have reported PFAS detections (60.1%).

Frisco Town Of's 820 violations sit above the Colorado average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
4,495
Total Violations
820
Health-Based Violations
8
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
2,126
County
Summit
School/Daycare
No
MCL Violations
4
Monitoring Violations
800
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Interim Enhanced Surface Water Treatment Rule MR 30 2025
CARBON, TOTAL MR 21 2006
Chlorine MR 20 2006
Nitrate MR 16 2017
Total Haloacetic Acids (HAA5) MR 13 2017
Endrin MR 12 2014
Methoxychlor MR 12 2014
Toxaphene MR 12 2014
Dalapon MR 12 2014
Diquat MR 12 2014
Simazine MR 12 2014
Di(2-ethylhexyl) phthalate MR 12 2014
Dinoseb MR 12 2014
Hexachlorocyclopentadiene MR 12 2014
Carbofuran MR 12 2014
Aldicarb MR 12 2014
Heptachlor MR 12 2014
2,4,5-TP MR 12 2014
HEXACHLOROBENZENE MR 12 2014
ETHYLENE DIBROMIDE MR 12 2014
Chlordane MR 12 2014
Di(2-ethylhexyl) adipate MR 12 2014
Aldicarb sulfone MR 12 2014
Atrazine MR 12 2014
LASSO MR 12 2014
Heptachlor epoxide MR 12 2014
Benzo(a)pyrene MR 12 2014
Pentachlorophenol MR 12 2014
BHC-GAMMA MR 12 2014
Endothall MR 12 2014

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 232 samples detected PFAS.

Contaminant Date Result MRL Status
ADONA 8/6/2024 <3.00 ppt 3.00 ppt Not Detected
PFOS 8/6/2024 <4.00 ppt 4.00 ppt Not Detected
PFOA 8/6/2024 <4.00 ppt 4.00 ppt Not Detected
PFDA 8/6/2024 <3.00 ppt 3.00 ppt Not Detected
PFDoA 8/6/2024 <3.00 ppt 3.00 ppt Not Detected
PFHxA 8/6/2024 <3.00 ppt 3.00 ppt Not Detected
11Cl-PF3OUdS 8/6/2024 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 8/6/2024 <5.00 ppt 5.00 ppt Not Detected
PFBA 8/6/2024 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 8/6/2024 <6.00 ppt 6.00 ppt Not Detected
NEtFOSAA 8/6/2024 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 8/6/2024 <7.00 ppt 7.00 ppt Not Detected
PFNA 8/6/2024 <4.00 ppt 4.00 ppt Not Detected
PFUnA 8/6/2024 <2.00 ppt 2.00 ppt Not Detected
PFTA 8/6/2024 <8.00 ppt 8.00 ppt Not Detected
PFMBA 8/6/2024 <3.00 ppt 3.00 ppt Not Detected
PFHxS 8/6/2024 <3.00 ppt 3.00 ppt Not Detected
PFHpS 8/6/2024 <3.00 ppt 3.00 ppt Not Detected
PFPeS 8/6/2024 <4.00 ppt 4.00 ppt Not Detected
9Cl-PF3ONS 8/6/2024 <2.00 ppt 2.00 ppt Not Detected
NFDHA 8/6/2024 <20.00 ppt 20.00 ppt Not Detected
PFEESA 8/6/2024 <3.00 ppt 3.00 ppt Not Detected
PFPeA 8/6/2024 <3.00 ppt 3.00 ppt Not Detected
PFMPA 8/6/2024 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 8/6/2024 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 8/6/2024 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 8/6/2024 <5.00 ppt 5.00 ppt Not Detected
PFBS 8/6/2024 <3.00 ppt 3.00 ppt Not Detected
PFHpA 8/6/2024 <3.00 ppt 3.00 ppt Not Detected
NEtFOSAA 8/6/2024 <5.00 ppt 5.00 ppt Not Detected
8:2 FTS 8/6/2024 <5.00 ppt 5.00 ppt Not Detected
PFBS 8/6/2024 <3.00 ppt 3.00 ppt Not Detected
PFTA 8/6/2024 <8.00 ppt 8.00 ppt Not Detected
HFPO-DA 8/6/2024 <5.00 ppt 5.00 ppt Not Detected
PFBA 8/6/2024 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 8/6/2024 <3.00 ppt 3.00 ppt Not Detected
PFMPA 8/6/2024 <4.00 ppt 4.00 ppt Not Detected
PFPeA 8/6/2024 <3.00 ppt 3.00 ppt Not Detected
PFMBA 8/6/2024 <3.00 ppt 3.00 ppt Not Detected
PFEESA 8/6/2024 <3.00 ppt 3.00 ppt Not Detected
NFDHA 8/6/2024 <20.00 ppt 20.00 ppt Not Detected
PFPeS 8/6/2024 <4.00 ppt 4.00 ppt Not Detected
PFHpS 8/6/2024 <3.00 ppt 3.00 ppt Not Detected
PFTrDA 8/6/2024 <7.00 ppt 7.00 ppt Not Detected
PFOS 8/6/2024 <4.00 ppt 4.00 ppt Not Detected
PFHxS 8/6/2024 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 8/6/2024 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 8/6/2024 <6.00 ppt 6.00 ppt Not Detected
PFHpA 8/6/2024 <3.00 ppt 3.00 ppt Not Detected
PFNA 8/6/2024 <4.00 ppt 4.00 ppt Not Detected

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Frisco Town Of.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID CO0159055 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Colorado Drinking Water Authority

Colorado Department of Public Health and Environment, Water Quality Control is the primacy agency that licenses and inspects Frisco Town Of under EPA-delegated authority.

Open CO regulator portal

Source: Colorado Department of Public Health and Environment, Water Quality Control

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2025 Interim Enhanced Surface Water Treatment Rule MR 30 SDWIS / CO0159055 / 0300
2025 Public Notice Other 3 SDWIS / CO0159055 / 7500
2021 Lead and Copper Rule MR 12 SDWIS / CO0159055 / 5000
2021 Surface Water Treatment Rule MR 6 SDWIS / CO0159055 / 0200
2021 Lead and Copper Rule TT 4 SDWIS / CO0159055 / 5000
2019 E. COLI MR 3 SDWIS / CO0159055 / 3014
2017 Nitrate MR 16 SDWIS / CO0159055 / 1040
2017 Total Haloacetic Acids (HAA5) MR 13 SDWIS / CO0159055 / 2456
2017 cis-1,2-Dichloroethylene MR 10 SDWIS / CO0159055 / 2380
2017 Xylenes, Total MR 10 SDWIS / CO0159055 / 2955
2017 DICHLOROMETHANE MR 10 SDWIS / CO0159055 / 2964
2017 o-Dichlorobenzene MR 10 SDWIS / CO0159055 / 2968
2017 p-Dichlorobenzene MR 10 SDWIS / CO0159055 / 2969
2017 1,1-Dichloroethylene MR 10 SDWIS / CO0159055 / 2977
2017 trans-1,2-Dichloroethylene MR 10 SDWIS / CO0159055 / 2979

How Frisco Town Of Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Frisco Town Of Colorado avg Federal benchmark
Total violations 820 108.9 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 8 13.9 Indicates a contaminant exceeded a federal MCL
PFAS detection None 60.1% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 4,495 3,408 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 2,193 regulated public water systems in Colorado.

Federal MCL reference, Safe Drinking Water Act thresholds
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Frisco Town Of water safe to drink?
Frisco Town Of (PWS ID: CO0159055) has 820 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 4,495 people using Surface Water sources.
How many people does Frisco Town Of serve?
Frisco Town Of serves 4,495 people in Frisco, Colorado. It is a Local-owned system using Surface Water water sources with 2,126 service connections.
What type of violations does Frisco Town Of have?
Frisco Town Of has 820 total violations: 8 health-based violations (MCL exceedances or treatment failures), 800 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Frisco Town Of water?
No. Frisco Town Of was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Frisco Town Of use?
Frisco Town Of uses Surface Water as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from?
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.
Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.