Water serving Cleveland County households mainly comes from surface water managed by the Norman public water system (OK1020801). This system supplies over 104,000 residents through 42,751 connections and is subject to federal monitoring and regulations that help track various constituents including 1,2,3-trichloropropane (1,2,3-TCP).
If you wonder how 1,2,3-TCP differs from other common water concerns
Unlike contaminants often confused with 1,2,3-TCP, such as pesticides or industrial solvents, 1,2,3-TCP is a chlorinated compound historically associated with soil fumigants and industrial applications. Its presence in water is distinct because it may not affect taste or cloudiness but can be detected with sensitive instruments. This characteristic distinguishes it from aesthetic issues, emphasizing the need for specialized testing.
If your water source is regional surface water and you want to know how 1,2,3-TCP gets there
In Cleveland County, 1,2,3-TCP enters local water primarily through historical use in agriculture and industrial operations near surface water bodies. After application, residues can leach into the water system via runoff and infiltration, reaching the surface water supply. The public water system treats and distributes this water, where 1,2,3-TCP levels are monitored systematically but not subject to a federal maximum contaminant level (MCL).
If you’re comparing public system data with private well tests
The Norman public water system regularly samples its water for 1,2,3-TCP under federal monitoring rules, providing data that reflects the average conditions across Cleveland County's served area. This data does not represent individual household plumbing or specific well water. In contrast, private well testing measures water quality at a single point. Consequently, private test results may vary significantly and are necessary to understand your home's specific water quality.
If you receive a certified laboratory report measuring 1,2,3-TCP for your home
A certified lab report will present 1,2,3-TCP levels in micrograms per liter (µg/L). The key points to note are if the level is above the reporting limit and the concentration itself. Since no federal MCL exists for 1,2,3-TCP, detection indicates measurement presence but not a legal or safety violation. Understanding these outcomes involves recognizing measurement sensitivity without assuming health risk directly from detection alone.
If you want a practical example of interpreting local system test results
The public water system's sampling from 2013 to 2015 found zero detections of 1,2,3-TCP above the reporting threshold of 0.03 µg/L in 54 samples. This median result means that during those years, routine testing did not measure 1,2,3-TCP above the detectable level in the system. For a homeowner, this suggests that system-supplied water in Cleveland County generally showed very low or undetectable levels during this period, though your private water may differ.
If you need clarity on terms like 'detected', 'median', and 'range' in water data
'Detected' means the instrument measured a concentration above the reporting level but does not indicate a violation or unsafe condition. 'Median' is the middle value in all measurements and offers a measure of the typical concentration found, while 'range' shows the spread between lowest and highest measurements. In this case, no measurements were above detection limits, so median and range reflect absence of measurable 1,2,3-TCP during sampling times.
Summarizing, Cleveland County's public water system data indicates 1,2,3-TCP is not detected above reporting levels in the distributed water during recent federal surveys. To understand your household's water quality, consider private testing through a certified lab. Where treatment is desired, specialized solutions like the C-Series 1,2,3-TCP Filter ship ready to configure, providing targeted reduction of this compound.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2014-02-11. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR3 monitoring (2013-2015) for Norman (OK1020801), OK: 54 results across 1 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level