PlainWater
States → Colorado

Transient Non-Community Water System · PWS CO0118050

Ponderosa Retreat and Conference Ctr

Larkspur, Colorado 80118 - drinking water served from groundwater sources to 167 people, tracked in EPA SDWIS and UCMR5.

167
People served
46
EPA violations
16
Health-based
Untested
UCMR5 result

The verdict

EPA records 46 drinking-water violations at Ponderosa Retreat and Conference Ctr, 35% of them health-based - below the Colorado per-system average.

46
Total EPA violations on record
35%
Health-based (MCL / treatment failure)
167
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Ponderosa Retreat and Conference Ctr

Ponderosa Retreat and Conference Ctr is a private-owned transient non-community water system that delivers drinking water to 167 residents in Larkspur, Colorado (Douglas County) through 42 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 46 total violations for this system , of which 16 (35%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 9 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Public Notice, recorded in 9 violations (Other). 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%).

Ponderosa Retreat and Conference Ctr's 46 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.

Population Served
167
Total Violations
46
Health-Based Violations
16
Water Source
Groundwater

System Details

System Type
Transient Non-Community
Owner Type
Private
Connections
42
County
Douglas
School/Daycare
No
MCL Violations
16
Monitoring Violations
9
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Public Notice Other 9 2021
Gross Alpha, Excl. Radon and U MCL 8 2014
Combined Radium (-226 and -228) MCL 8 2014
Consumer Confidence Rule Other 4 2011
Coliform (TCR) MR 3 2009
Chlorine MR 3 2009
Revised Total Coliform Rule Other 3 2024
Gross Alpha, Excl. Radon and U MR 3 2013

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 Ponderosa Retreat and Conference Ctr.

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 CO0118050 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 Ponderosa Retreat and Conference Ctr 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
2024 Revised Total Coliform Rule Other 3 SDWIS / CO0118050 / 8000
2021 Public Notice Other 9 SDWIS / CO0118050 / 7500
2014 Gross Alpha, Excl. Radon and U MCL 8 SDWIS / CO0118050 / 4000
2014 Combined Radium (-226 and -228) MCL 8 SDWIS / CO0118050 / 4010
2013 Gross Alpha, Excl. Radon and U MR 3 SDWIS / CO0118050 / 4000
2011 Consumer Confidence Rule Other 4 SDWIS / CO0118050 / 7000
2009 Coliform (TCR) MR 3 SDWIS / CO0118050 / 3100
2009 Chlorine MR 3 SDWIS / CO0118050 / 0999

How Ponderosa Retreat and Conference Ctr Compares

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

Metric Ponderosa Retreat and Conference Ctr Colorado avg Federal benchmark
Total violations 46 108.9 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 16 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 167 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 Ponderosa Retreat and Conference Ctr water safe to drink? ▼
Ponderosa Retreat and Conference Ctr (PWS ID: CO0118050) has 46 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 167 people using Groundwater sources.
How many people does Ponderosa Retreat and Conference Ctr serve? ▼
Ponderosa Retreat and Conference Ctr serves 167 people in Larkspur, Colorado. It is a Private-owned system using Groundwater water sources with 42 service connections.
What type of violations does Ponderosa Retreat and Conference Ctr have? ▼
Ponderosa Retreat and Conference Ctr has 46 total violations: 16 health-based violations (MCL exceedances or treatment failures), 9 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Ponderosa Retreat and Conference Ctr water? ▼
No PFAS testing data is available for Ponderosa Retreat and Conference Ctr under the EPA's UCMR5 monitoring program.
What water source does Ponderosa Retreat and Conference Ctr use? ▼
Ponderosa Retreat and Conference Ctr uses Groundwater as its primary water source. It is classified as a Transient Non-Community Water System, serving transient populations.
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.