The EPA's public record for the West Des Moines Water Works system (serving 73,959 people through 25,833 connections) shows a 90th percentile lead level of 0 mg/L as of the 2023-12-31 sampling date. This figure represents lead measured from water samples within the distribution system, focusing on plumbing and tap water, not the untreated source water itself. Importantly, there are no EPA health-based violations on record for this system.
How Many Samples and Wells Stand Behind the Figures, and What a Small Sample Means
The lead data for this system come from regular sampling at homes and taps throughout West Des Moines, reflecting a distribution-based measure rather than source water. Because it's a 90th percentile value, it summarizes the lead concentration found in most samples taken, indicating that 90% of samples measured no lead above 0 mg/L. This statistic depends on consistent sampling protocols and covers a broad range of connections but does not detail any individual home's water quality. Therefore, a home's own lead level can only be known through specific testing of that location's water.
How the Treated Water Differs at the Tap Once the Documented Technology Is in Place
When a household's existing water treatment equipment has failed, the type of water delivered to the tap may risk exposure to lead leaching from plumbing materials. The Autotrol Lead in Water Filter is designed to reduce lead content at the point of use. This filtration system directly addresses lead particles and dissolved forms, helping lower their presence after municipal treatment and through household plumbing. It ships ready to configure, enabling homeowners to restore effective lead reduction without depending on external service providers.
Which Fixtures, Appliances or Processes Are Affected First and Why
The first points where lead concerns are typically noticed are kitchen taps, where drinking and cooking water are drawn, and bathroom faucets. Since lead can leach from plumbing components such as pipes, fittings, and solder, any fixture that delivers standing water or fluctuates in use frequency may show elevated lead levels before others. Appliances that use water directly from these sources, like ice makers or coffee machines, can also be influenced if lead is present at the tap.
How Seasonal or Multi-Year Variation Shows in the Record (Dates and Ranges Given)
The December 31, 2023 sampling reflects the most recent available data, consistent with ongoing monitoring under regulatory guidelines. While lead levels can vary over seasons or years due to changes in water chemistry, corrosion control methods, or pipe conditions, this system's record shows stable and compliant lead measures without health-based violations. Periodic retesting is recommended to track any future changes in water quality.
What Changes for a Large Household, a Second Home, or a Seasonal Property
Water use patterns influence lead exposure risks. Large households with higher water consumption may experience more frequent turnover of water in pipes, potentially reducing lead buildup. Conversely, second homes or seasonal properties with intermittent use can have longer water residence times in plumbing, potentially increasing lead leaching risks. In such cases, using a point-of-use lead filter like the Autotrol system can provide consistent protection regardless of water use patterns.
What a Certified Laboratory Test for This Constituent Reports and How to Read It
Testing water for lead requires submission to a certified laboratory following EPA-approved methods. Test reports typically provide total lead concentration in milligrams per liter (mg/L) and compare results to regulatory action levels. A non-detected result or levels below EPA action thresholds do not indicate unsafe water but confirm the absence of elevated lead in the sample tested. Homeowners should interpret these results considering the sampling location, frequency, and sample collection protocols.
This briefing clarifies that West Des Moines municipal water meets EPA lead standards with no violations recorded, but individual household water conditions require separate testing. For homes with failed lead reduction equipment, using a dedicated filtration technology like the Autotrol Lead in Water Filter offers a documented way to reduce lead exposure at the tap, restoring safe water use for drinking and cooking.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2023-12-31. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA SDWIS record for WEST DES MOINES WATER WORKS (IA7785007), surface water supply, serving 73959 people: 0 health-based violations of 0 total; lead 90th percentile 0 mg/L
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