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Community Water System · PWS CO0115342

Hidden Valley HOA Water Company

Paonia, Colorado 81428 - drinking water served from surface water sources to 120 people, tracked in EPA SDWIS and UCMR5.

120
People served
84
EPA violations
4
Health-based
Untested
UCMR5 result

The verdict

EPA records 84 drinking-water violations at Hidden Valley HOA Water Company, 5% of them health-based - below the Colorado per-system average.

84
Total EPA violations on record
5%
Health-based (MCL / treatment failure)
120
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Hidden Valley HOA Water Company

Hidden Valley HOA Water Company is a private-owned community water system that delivers drinking water to 120 residents in Paonia, Colorado (Delta County) through 52 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 84 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 69 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 Revised Total Coliform Rule, recorded in 13 violations (MON). 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%).

Hidden Valley HOA Water Company's 84 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
120
Total Violations
84
Health-Based Violations
4
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Private
Connections
52
County
Delta
School/Daycare
No
MCL Violations
0
Monitoring Violations
69
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Revised Total Coliform Rule MON 13 2023
Surface Water Treatment Rule MR 13 2023
Chlorine MR 13 2023
Lead and Copper Rule MR 12 2021
Consumer Confidence Rule Other 10 2024
TTHM MR 9 2023
Total Haloacetic Acids (HAA5) MR 9 2023
Stage 1 Disinfectants and Disinfection Byproducts Rule TT 4 2024

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 Hidden Valley HOA Water Company.

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 CO0115342 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 Hidden Valley HOA Water Company 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 Consumer Confidence Rule Other 10 SDWIS / CO0115342 / 7000
2024 Stage 1 Disinfectants and Disinfection Byproducts Rule TT 4 SDWIS / CO0115342 / 0400
2023 Revised Total Coliform Rule MON 13 SDWIS / CO0115342 / 8000
2023 Surface Water Treatment Rule MR 13 SDWIS / CO0115342 / 0200
2023 Chlorine MR 13 SDWIS / CO0115342 / 0999
2023 TTHM MR 9 SDWIS / CO0115342 / 2950
2023 Total Haloacetic Acids (HAA5) MR 9 SDWIS / CO0115342 / 2456
2021 Lead and Copper Rule MR 12 SDWIS / CO0115342 / 5000

How Hidden Valley HOA Water Company Compares

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

Metric Hidden Valley HOA Water Company Colorado avg Federal benchmark
Total violations 84 108.9 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 None 60.1% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 120 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 Hidden Valley HOA Water Company water safe to drink? ▼
Hidden Valley HOA Water Company (PWS ID: CO0115342) has 84 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 120 people using Surface Water sources.
How many people does Hidden Valley HOA Water Company serve? ▼
Hidden Valley HOA Water Company serves 120 people in Paonia, Colorado. It is a Private-owned system using Surface Water water sources with 52 service connections.
What type of violations does Hidden Valley HOA Water Company have? ▼
Hidden Valley HOA Water Company has 84 total violations: 4 health-based violations (MCL exceedances or treatment failures), 69 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Hidden Valley HOA Water Company water? ▼
No PFAS testing data is available for Hidden Valley HOA Water Company under the EPA's UCMR5 monitoring program.
What water source does Hidden Valley HOA Water Company use? ▼
Hidden Valley HOA Water Company 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.