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Johnson Village, CO Tap Water Quality 2026

Water quality report for Johnson Village, CO — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Johnson Village's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Casa Del Rio Subd PWSID: CO0108375 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead was not detected and no violations are open. PFAS has never been sampled at this system.

B

Johnson Village earns a B for water quality

Graded on violations and lead, with state inspection findings. PFAS not tested.

Lead: not detected
PFAS never sampled at this system
5 violations since 2015, 0 health-based
No violations currently open
Johnson Village's lead level vs. all Colorado community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: Not detected — 0% of the federal action level
✓ Lower lead than % of Colorado utilities
Population Served
138
~53 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
5 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
0% of EPA action level
Not detected
Action level: 15 ppb
Copper (Cu)
90th percentile of tap samples. SDWIS reports a copper figure only when a system exceeds the action level, so any value here is an exceedance.
123.1% of EPA action level
1,600 ppb
Action level: 1,300 ppb
Lead was not detected at the 90th percentile — the result fell below the laboratory detection limit. That is not the same as an absence of lead in every tap, and older homes with lead service lines can still show higher readings. Copper reached the action level here; a copper figure appears in SDWIS only when a system triggers it.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Gross Alpha, Excl. Radon and U MONITORING AND REPORTING — 15 pCi/L 2020 Resolved
Combined Radium (-226 and -228) MONITORING AND REPORTING — 5 pCi/L 2020 Resolved
Combined Uranium MONITORING AND REPORTING — 30 ug/L 2020 Resolved
Public Notice OTHER — — 2017 Resolved
Stage 2 Disinfectants and Disinfection Byproducts Rule MONITORING AND REPORTING — — 2016 Resolved
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

5 violations are on record since 2015, of which 0 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Casa Del Rio Subd
PWSID CO0108375
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 138
Service connections 53
Systems serving this area 2
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Johnson Village tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open.
Does Johnson Village water have PFAS? ▼
This system has never been sampled for PFAS. EPA's national monitoring covered systems serving 3,300 people or more, so no results exist — which is not evidence that none is present.
Who supplies water to Johnson Village? ▼
Casa Del Rio Subd (PWSID CO0108375), one of 2 systems serving this area. Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2025-08-26. No significant deficiencies were recorded.

What Should Johnson Village Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Flush before drinking
If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

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