What a Perchlorate Test Report Actually States
A laboratory report for perchlorate typically shows a concentration value in micrograms per liter (µg/L). For public water systems like SECURITY WSD serving El Paso County, routine monitoring has reported perchlorate results without detections above the reporting level of 4.0 µg/L between 2001 and 2005. This means measured levels were below what the equipment can reliably detect, but does not indicate zero perchlorate presence. Such values provide a snapshot rather than a comprehensive risk assessment for any individual household's water.
Interpreting Reported Perchlorate Ranges Against Federal Standards
The federal government has not established a maximum contaminant level (MCL) for perchlorate in drinking water, so there is no enforceable limit to compare against. The absence of detected perchlorate in regional system monitoring is not a safety guarantee but indicates that perchlorate is not present above the monitoring reporting threshold used. Perchlorate is a chemical that can disrupt thyroid function at high exposures, but federal testing in El Paso County’s public water system shows no measurable perchlorate above reporting levels in the sampled timeframe.
Influence of Sample Depth, Well Depth, and Source Type on Expected Perchlorate Levels
The public water system in El Paso County draws from surface water sources, which generally have different contaminant profiles compared to groundwater wells. Depth of a private well can affect perchlorate presence since perchlorate contamination often results from surface or near-surface activities. A private well drawing from deeper aquifers may have different exposure than public system surface water. Depth and source type affect what perchlorate levels a household might actually encounter, underscoring the need for direct water testing at the home.
Plumbing Materials and Age Do Not Affect Perchlorate Levels
Plumbing system materials and age within a residence do not alter the concentration of perchlorate in water. Perchlorate is a dissolved chemical ion present in source water and distribution systems but does not originate from or react with plumbing materials. Therefore, observed perchlorate levels relate solely to source water quality rather than internal building components.
Sources and Pathways of Perchlorate Entry in El Paso County Water
Perchlorate can enter water sources through industrial pollution, use of certain fertilizers, or atmospheric deposition. In El Paso County, public water surface supplies have shown no perchlorate detected above the reporting threshold during EPA surveys. This suggests limited presence in the municipal source water at the time of monitoring. However, perchlorate may still enter local shallow groundwater or private wells near potential contamination sites, requiring individual testing to confirm.
Differences Between Public Water System Records and Private Well Testing
Public water system data reflects aggregated monitoring designed to meet regulatory requirements, representing average conditions over wide areas and multiple connections. Individual wells vary greatly and testing a private water supply is the only way to determine a home's specific perchlorate level. Public system records do not substitute for private water testing, especially when considering treatment decisions based on household demand or unique local conditions.
What To Avoid Concluding From Regional Perchlorate Data
Regional monitoring results from the public water system in El Paso County should not be interpreted as direct indicators of any one household’s water quality. Absence of detected perchlorate above monitoring limits does not mean perchlorate is absent everywhere or that treatment is unnecessary. Conversely, detected perchlorate at low levels in other settings does not imply a safety violation. Proper laboratory testing of the household water source is essential for accurate assessment. The C-Series Perchlorate Filter ships ready to configure and offers a documented approach to reducing perchlorate if testing indicates its presence at levels a household chooses to address.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2001-10-17. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR1 monitoring (2001-2005) for SECURITY WSD (CO0121775), CO: 33 results across 1 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level