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Community Water System · PWS CO0162486

Lochbuie Town Of

Lochbuie, Colorado 80603 - drinking water served from groundwater sources to 6,830 people, tracked in EPA SDWIS and UCMR5.

6,830
People served
88
EPA violations
4
Health-based
4 PFAS
UCMR5 result

The verdict

EPA records 88 drinking-water violations at Lochbuie Town Of, 5% of them health-based - below the Colorado per-system average, and UCMR5 testing detected 4 PFAS compounds.

88
Total EPA violations on record
5%
Health-based (MCL / treatment failure)
6,830
People served by this system
4
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Lochbuie Town Of

Lochbuie Town Of is a local-owned community water system that delivers drinking water to 6,830 residents in Lochbuie, Colorado (Weld County) through 2,932 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 88 total violations for this system , of which 4 (5%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 83 monitoring and reporting violations are on file. The most recent violation on record dates to 2022.

The most frequently cited contaminant at this system is Lead and Copper Rule, recorded in 10 violations (MR). Under EPA's UCMR5 PFAS monitoring program, 4 PFAS compounds were detected in samples collected from this system, with a maximum reported concentration of 6.8 ppt (parts per trillion). PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

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%).

Lochbuie Town Of's 88 violations sit below 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.

PFAS Detected

4 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served
6,830
Total Violations
88
Health-Based Violations
4
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
2,932
County
Weld
School/Daycare
No
MCL Violations
4
Monitoring Violations
83
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 10 2022
Chlorine MR 5 2021
Coliform (TCR) MCL 4 1996
Coliform (TCR) MR 3 2006
Revised Total Coliform Rule MON 3 2021
Endrin MR 2 2005
BHC-GAMMA MR 2 2005
Toxaphene MR 2 2005
Diquat MR 2 2005
Endothall MR 2 2005
Di(2-ethylhexyl) adipate MR 2 2005
OXAMYL MR 2 2005
Di(2-ethylhexyl) phthalate MR 2 2005
Picloram MR 2 2005
Hexachlorocyclopentadiene MR 2 2005
Carbofuran MR 2 2005
Heptachlor MR 2 2005
Heptachlor epoxide MR 2 2005
Pentachlorophenol MR 2 2005
Total Polychlorinated Biphenyls (PCB) MR 2 2005
Chlordane MR 2 2005
Aldicarb sulfone MR 2 2005
2,4-D MR 2 2005
Dinoseb MR 2 2005
2,4,5-TP MR 2 2005
HEXACHLOROBENZENE MR 2 2005
Aldicarb MR 2 2005
1,2-DIBROMO-3-CHLOROPROPANE MR 2 2005
LASSO MR 2 2005
Benzo(a)pyrene MR 2 2005

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 5 of 58 samples detected PFAS.

Contaminant Date Result MRL Status
PFBS 7/25/2023 3.40 ppt 3.00 ppt Detected
11Cl-PF3OUdS 7/25/2023 <5.00 ppt 5.00 ppt Not Detected
PFUnA 7/25/2023 <2.00 ppt 2.00 ppt Not Detected
PFDoA 7/25/2023 <3.00 ppt 3.00 ppt Not Detected
PFDA 7/25/2023 <3.00 ppt 3.00 ppt Not Detected
PFOA 7/25/2023 <4.00 ppt 4.00 ppt Not Detected
PFOS 7/25/2023 <4.00 ppt 4.00 ppt Not Detected
PFNA 7/25/2023 <4.00 ppt 4.00 ppt Not Detected
9Cl-PF3ONS 7/25/2023 <2.00 ppt 2.00 ppt Not Detected
PFHpA 7/25/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxA 7/25/2023 5.60 ppt 3.00 ppt Detected
PFHxS 7/25/2023 3.00 ppt 3.00 ppt Detected
PFPeA 7/25/2023 6.80 ppt 3.00 ppt Detected
NMeFOSAA 7/25/2023 <6.00 ppt 6.00 ppt Not Detected
PFTA 7/25/2023 <8.00 ppt 8.00 ppt Not Detected
PFHpS 7/25/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeS 7/25/2023 <4.00 ppt 4.00 ppt Not Detected
NFDHA 7/25/2023 <20.00 ppt 20.00 ppt Not Detected
NEtFOSAA 7/25/2023 <5.00 ppt 5.00 ppt Not Detected
PFMBA 7/25/2023 <3.00 ppt 3.00 ppt Not Detected
ADONA 7/25/2023 <3.00 ppt 3.00 ppt Not Detected
PFMPA 7/25/2023 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 7/25/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 7/25/2023 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 7/25/2023 <5.00 ppt 5.00 ppt Not Detected
PFBA 7/25/2023 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 7/25/2023 <5.00 ppt 5.00 ppt Not Detected
PFEESA 7/25/2023 <3.00 ppt 3.00 ppt Not Detected
PFTrDA 7/25/2023 <7.00 ppt 7.00 ppt Not Detected
PFNA 3/15/2023 <4.00 ppt 4.00 ppt Not Detected
ADONA 3/15/2023 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 3/15/2023 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 3/15/2023 <5.00 ppt 5.00 ppt Not Detected
PFUnA 3/15/2023 <2.00 ppt 2.00 ppt Not Detected
PFHxA 3/15/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 3/15/2023 <3.00 ppt 3.00 ppt Not Detected
PFDA 3/15/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 3/15/2023 <3.00 ppt 3.00 ppt Not Detected
PFOS 3/15/2023 <4.00 ppt 4.00 ppt Not Detected
NMeFOSAA 3/15/2023 <6.00 ppt 6.00 ppt Not Detected
PFHxS 3/15/2023 <3.00 ppt 3.00 ppt Not Detected
4:2 FTS 3/15/2023 <3.00 ppt 3.00 ppt Not Detected
PFBS 3/15/2023 6.30 ppt 3.00 ppt Detected
PFOA 3/15/2023 <4.00 ppt 4.00 ppt Not Detected
PFTrDA 3/15/2023 <7.00 ppt 7.00 ppt Not Detected
PFBA 3/15/2023 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 3/15/2023 <5.00 ppt 5.00 ppt Not Detected
NEtFOSAA 3/15/2023 <5.00 ppt 5.00 ppt Not Detected
PFTA 3/15/2023 <8.00 ppt 8.00 ppt Not Detected
PFHpS 3/15/2023 <3.00 ppt 3.00 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 Lochbuie 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 CO0162486 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 Lochbuie 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
2022 Lead and Copper Rule MR 10 SDWIS / CO0162486 / 5000
2021 Chlorine MR 5 SDWIS / CO0162486 / 0999
2021 Revised Total Coliform Rule MON 3 SDWIS / CO0162486 / 8000
2006 Coliform (TCR) MR 3 SDWIS / CO0162486 / 3100
2005 Endrin MR 2 SDWIS / CO0162486 / 2005
2005 BHC-GAMMA MR 2 SDWIS / CO0162486 / 2010
2005 Toxaphene MR 2 SDWIS / CO0162486 / 2020
2005 Diquat MR 2 SDWIS / CO0162486 / 2032
2005 Endothall MR 2 SDWIS / CO0162486 / 2033
2005 Di(2-ethylhexyl) adipate MR 2 SDWIS / CO0162486 / 2035
2005 OXAMYL MR 2 SDWIS / CO0162486 / 2036
2005 Di(2-ethylhexyl) phthalate MR 2 SDWIS / CO0162486 / 2039
2005 Picloram MR 2 SDWIS / CO0162486 / 2040
2005 Hexachlorocyclopentadiene MR 2 SDWIS / CO0162486 / 2042
2005 Carbofuran MR 2 SDWIS / CO0162486 / 2046

How Lochbuie Town Of Compares

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

Metric Lochbuie Town Of Colorado avg Federal benchmark
Total violations 88 108.9 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 4 13.9 Indicates a contaminant exceeded a federal MCL
PFAS detection 4 compounds 60.1% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 6,830 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 Lochbuie Town Of water safe to drink? ▼
Lochbuie Town Of (PWS ID: CO0162486) has 88 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 4 PFAS compounds found. This system serves 6,830 people using Groundwater sources.
How many people does Lochbuie Town Of serve? ▼
Lochbuie Town Of serves 6,830 people in Lochbuie, Colorado. It is a Local-owned system using Groundwater water sources with 2,932 service connections.
What type of violations does Lochbuie Town Of have? ▼
Lochbuie Town Of has 88 total violations: 4 health-based violations (MCL exceedances or treatment failures), 83 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Lochbuie Town Of water? ▼
Yes. UCMR5 testing detected 4 PFAS compounds in Lochbuie Town Of's water supply: PFBS, PFHxA, PFHxS, PFPeA. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does Lochbuie Town Of use? ▼
Lochbuie Town Of uses Groundwater 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.

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.