Government Sampling Record Overview
EPA data for East Cherry Creek Valley WSD in Arapahoe County shows no health-based lead violations
The latest public water system record as of June 2026 for East Cherry Creek Valley Water and Sanitation District reports a 90th percentile lead concentration of 0 mg/L. This measure aggregates samples from 19,300 connections serving about 66,130 people, reflecting water at consumers' taps across the system without indicating any health-based violations.
Interpreting Sampling Terms in the Record
90th percentile explains concentration distribution but is not a detection for individual homes
The 90th percentile figure means that 90% of tested samples were at or below 0 mg/L lead concentration; it does not provide a specific value for any individual residence. This value relates to plumbing and distribution system conditions, not to raw source water, which is surface water for this system.
Zero does not imply absolute absence, but less than or equal to the detection limit
A reported lead value of 0 mg/L represents a concentration at or below the detection capability of testing methods used; it is not a guarantee of zero lead but indicates very low levels systemwide.
Seasonal and Multi-Year Variation in Lead Sampling
Sampling date and number of tests provide context for observed results
The June 2026 sampling date captures a point in time; lead levels can vary with plumbing conditions and water chemistry during different seasons or years. Monitoring over multiple years and seasons ensures that the 0 mg/L 90th percentile reflects consistent system performance rather than an isolated measurement.
What to Record Before Choosing Water Treatment
Document your home's water source and any recent water quality tests
Before selecting a lead water treatment system, note whether your home connects to the East Cherry Creek Valley surface water system and gather any recent lead testing results from your tap water. This information guides appropriate treatment choice.
Track household plumbing materials and water usage patterns
Materials like lead pipes or brass fixtures can affect lead presence in water. Knowing your home's plumbing specifics helps determine if additional treatment is beneficial.
Sample Size and Its Impact on Data Reliability
19,300 connections tested give broad but not home-specific insight
The large sample size across the water system supports confidence that lead concentrations are generally low at the community level; however, individual homes may differ depending on internal plumbing condition.
Small sample sizes at a home level require personal water testing
Because the system-wide figure does not guarantee lead absence in any single household, ordering a private lead test for your tap water is critical. This test helps you verify your specific water quality.
Next Steps for Confirming Your Water Quality
The key diagnostic action is to obtain an individual tap water test for lead concentration. If the test indicates lead presence above your comfort level, considering treatment with a Pentair Lead in Water Filter can provide targeted removal of lead contaminants. This system ships ready to configure and offers a documented approach for reducing lead exposure at the point of use.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2026-06-30. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA SDWIS record for EAST CHERRY CREEK VALLEY WSD (CO0103035), surface water supply, serving 66130 people: 0 health-based violations of 35 total; lead 90th percentile 0 mg/L