Sierra Ridge, CO Tap Water Quality 2026

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

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

Main Utility: Parker Wsd PWSID: CO0118040 Updated: 2026 Q2

✅

No federal limits exceeded on record

Lead is 2.00 ppb, 13% of the action level and no violations are open. PFAS was detected below the federal limit.

Sierra Ridge earns a C for water quality

Graded on violations, lead, and PFAS, with state inspection findings.

Lead: 2.00 ppb — 13% of the federal action level

PFAS detected below the federal limit

7 violations since 2015, 0 health-based

No violations currently open

Sierra Ridge's lead level vs. all Colorado community water systems

0 ppb5 ppb10 ppb15 ppb

Lead level: 2.00 ppb — 13% of the federal action level

✓ Lower lead than 63% of Colorado utilities

Population Served

3490

~20005 connections

Water Source

Surface water

Drawn from surface water — SDWIS source code SW

Active Violations

7 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)

90th percentile of tap samples collected across the distribution system

13% of EPA action level

2.00 ppb

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.

107.7% of EPA action level

1,400 ppb

Action level: 1,300 ppb

The 90th-percentile lead result is 2.00 ppb, 13% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home. Copper reached the action level here; a copper figure appears in SDWIS only when a system triggers it.

Contaminant Violations (2015–Present)

Contaminant	Type	Measured	Limit	Period	Status
LEAD AND COPPER RULE REVISIONS	REPORTING FAILURE	—	—	2025	Resolved
Chlorite	MONITORING AND REPORTING	—	1.0 mg/L	2024	Resolved
Chlorine dioxide	MONITORING AND REPORTING	—	0.8 mg/L	2024	Archived
E. COLI	MONITORING AND REPORTING	—	0	2024	Resolved
Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2023	Resolved
Consumer Confidence Rule	OTHER	—	—	2022	Resolved
Lead and Copper Rule	MONITORING AND REPORTING	—	TT	2021	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

7 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 Parker Wsd

PWSID CO0118040

Water source Surface water — Drawn from surface water — SDWIS source code SW

Population served 3,490

Service connections 20,005

Systems serving this area 3

Regulator State primacy agency

Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Sierra Ridge tap water safe to drink? ▼

No federal limit is exceeded on record. No violations are currently open. Lead is 2.00 ppb, 13% of the action level.

Does Sierra Ridge water have PFAS? ▼

PFAS was detected but stayed below the federal limit.

Who supplies water to Sierra Ridge? ▼

Parker Wsd (PWSID CO0118040), one of 3 systems serving this area. Surface water. Drawn from surface water — SDWIS source code SW

When was this system last inspected? ▼

It was last inspected on 2025-08-07. Inspectors recorded 3 significant deficiencies.

What Should Sierra Ridge Residents Do?

Read your annual water report

Your supplier publishes a Consumer Confidence Report each July covering the prior year.

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.

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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