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Community Water System · PWS CO0107401

Jamestown Town Of

Jamestown, Colorado 80455 - drinking water served from surface water sources to 280 people, tracked in EPA SDWIS and UCMR5.

280
People served
418
EPA violations
96
Health-based
Untested
UCMR5 result

The verdict

EPA records 418 drinking-water violations at Jamestown Town Of, 23% of them health-based - above the Colorado per-system average.

418
Total EPA violations on record
23%
Health-based (MCL / treatment failure)
280
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Jamestown Town Of

Jamestown Town Of is a local-owned community water system that delivers drinking water to 280 residents in Jamestown, Colorado (Boulder County) through 105 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 418 total violations for this system , of which 96 (23%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 279 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 Surface Water Treatment Rule, recorded in 48 violations (TT, health-based). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

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%).

Jamestown Town Of's 418 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
280
Total Violations
418
Health-Based Violations
96
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
105
County
Boulder
School/Daycare
No
MCL Violations
0
Monitoring Violations
279
Treatment Tech Violations
96

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Surface Water Treatment Rule TT 48 2018
Interim Enhanced Surface Water Treatment Rule TT 43 2017
Surface Water Treatment Rule MR 38 2024
E. COLI MR 22 2018
Lead and Copper Rule MR 16 2018
Interim Enhanced Surface Water Treatment Rule MR 12 2024
Public Notice Other 9 2025
Chlorine MR 9 2023
Barium MR 7 2016
Chromium MR 7 2016
Mercury MR 7 2016
Nickel MR 7 2016
Beryllium, Total MR 7 2016
Selenium MR 7 2016
Thallium, Total MR 7 2016
Revised Total Coliform Rule MON 7 2017
Antimony, Total MR 7 2016
Cadmium MR 7 2016
Coliform (TCR) MR 7 2007
Arsenic MR 7 2016
Fluoride MR 6 2016
Lead and Copper Rule TT 5 2018
1,2,4-Trichlorobenzene MR 4 2016
Xylenes, Total MR 4 2016
DICHLOROMETHANE MR 4 2016
p-Dichlorobenzene MR 4 2016
Vinyl chloride MR 4 2016
1,1-Dichloroethylene MR 4 2016
trans-1,2-Dichloroethylene MR 4 2016
1,2-Dichloroethane MR 4 2016

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 Jamestown 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 CO0107401 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 Jamestown 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 Public Notice Other 9 SDWIS / CO0107401 / 7500
2024 Surface Water Treatment Rule MR 38 SDWIS / CO0107401 / 0200
2024 Interim Enhanced Surface Water Treatment Rule MR 12 SDWIS / CO0107401 / 0300
2023 Chlorine MR 9 SDWIS / CO0107401 / 0999
2023 Revised Total Coliform Rule RPT 3 SDWIS / CO0107401 / 8000
2018 Surface Water Treatment Rule TT 48 SDWIS / CO0107401 / 0200
2018 E. COLI MR 22 SDWIS / CO0107401 / 3014
2018 Lead and Copper Rule MR 16 SDWIS / CO0107401 / 5000
2018 Lead and Copper Rule TT 5 SDWIS / CO0107401 / 5000
2017 Interim Enhanced Surface Water Treatment Rule TT 43 SDWIS / CO0107401 / 0300
2017 Revised Total Coliform Rule MON 7 SDWIS / CO0107401 / 8000
2016 Barium MR 7 SDWIS / CO0107401 / 1010
2016 Chromium MR 7 SDWIS / CO0107401 / 1020
2016 Mercury MR 7 SDWIS / CO0107401 / 1035
2016 Nickel MR 7 SDWIS / CO0107401 / 1036

How Jamestown Town Of Compares

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

Metric Jamestown Town Of Colorado avg Federal benchmark
Total violations 418 108.9 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 96 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 280 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 Jamestown Town Of water safe to drink? ▼
Jamestown Town Of (PWS ID: CO0107401) has 418 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 280 people using Surface Water sources.
How many people does Jamestown Town Of serve? ▼
Jamestown Town Of serves 280 people in Jamestown, Colorado. It is a Local-owned system using Surface Water water sources with 105 service connections.
What type of violations does Jamestown Town Of have? ▼
Jamestown Town Of has 418 total violations: 96 health-based violations (MCL exceedances or treatment failures), 279 monitoring/reporting violations, and 96 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Jamestown Town Of water? ▼
No PFAS testing data is available for Jamestown Town Of under the EPA's UCMR5 monitoring program.
What water source does Jamestown Town Of use? ▼
Jamestown 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. This data is provided for informational purposes only.

Read our methodology - how this data is sourced, computed, and verified.

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.