Laboratory Reports List Detected Constituent Levels Without Identifying Individual Home Water
When you receive a laboratory water quality report, it typically lists concentrations of constituents like chlorine measured in your water sample. However, these results come from testing a specific source or tap. The EPA maintains a public water system record for EPCOR - SAN TAN (AZ0411128) serving Johnson Ranch, Pinal County, derived from groundwater supply points and distribution system sampling. This system's record reflects composite data for approximately 87,435 people served through 26,986 connections. Such data provide a statistical overview, not individual household water conditions.
Chlorine Enters the Johnson Ranch Water System Through Treatment and Distribution Processes
In Johnson Ranch, chlorine is introduced as part of water treatment steps to maintain disinfection when groundwater is treated and distributed. The treatment process codes recorded for this system (401|403|421|460|461|640|999) indicate multiple treatment stages typical in municipal water supplies but do not specify chlorine dosing levels. Chlorine also can react or dissipate during distribution. The presence of chlorine taste or smell issues may stem from treatment residuals or equipment interactions within household plumbing but is not inherent from source groundwater, which is untreated.
Detected, Median, and Range Values Show the Extent of Sampling But Do Not Define Safety or Exact Household Levels
The EPA public water system record uses terms like 'detected' to note that a constituent was measured above the laboratory's detection limit in at least one sample. The record does not equate 'detected' with an exceedance of any health-based standard. Median values summarize central tendency of samples, and the range shows variation across all samples taken. These terms collectively describe measurement results from multiple wells and sampling events, giving an overall picture without asserting individual tap water status.
Comparing Johnson Ranch Chlorine Data With Neighboring Pinal County Areas Requires Careful Context Consideration
While nearby areas in Pinal County may have different water systems or treatment procedures, simply comparing chlorine detection rates or ranges without considering source differences, system size, and treatment methods can mislead. Neighboring systems may serve smaller populations or rely on surface water, which affects chlorine application. Johnson Ranch's groundwater source and the multi-stage treatment approach influence chlorine presence distinctly, so comparisons need context about system characteristics and data collection scopes.
Chlorine Issues Differ From Iron and Hardness Problems Often Confused in Household Water Concerns
It is common for water quality issues like iron staining or hardness to be conflated with chlorine taste and smell problems. Unlike iron or hardness, which originate from mineral content in source water, chlorine is a chemical added for disinfection purposes. Also, chlorine concerns relate primarily to aesthetic qualities or residuals, while iron and hardness impact scaling, staining, and soap effectiveness. Understanding these differences helps identify the right treatment solutions.
In summary, EPA data for Johnson Ranch describe chlorine presence in the municipal groundwater-sourced system tested at multiple points and do not specify conditions for individual homes. To confirm your water’s chlorine level, residential testing is required. When existing equipment addressing chlorine taste or smell fails, the Autotrol Chlorine Taste & Smell Filter ships ready to configure as a targeted solution designed to reduce such issues effectively.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2024-12-31. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA SDWIS record for EPCOR - SAN TAN (AZ0411128), groundwater supply, serving 87435 people: 2 health-based violations of 64 total; lead 90th percentile 0 mg/L