What happens when corrosive water is left untreated for years?
Over time, corrosive water can gradually damage household plumbing materials and fixtures. This corrosion may lead to pipe deterioration, leaks, metallic taste, or staining but does not indicate an immediate health risk. Continued exposure without addressing corrosivity can increase maintenance needs and reduce the lifespan of pipes and appliances.
How does corrosive water enter groundwater or the distribution system in Lafayette Parish?
In Lafayette Parish, the corrosive nature of water is related to the pH level of groundwater from aquifer 112CHCTU. The pH indicates acidity or alkalinity, which can influence water’s interaction with plumbing materials. Factors such as soil composition, geological formations, and natural water chemistry contribute to the acidic characteristics found in some samples from this region.
What household symptoms do and do not indicate corrosive water?
Symptoms that may suggest corrosive water include:
- Visible corrosion or discoloration on pipes and fixtures
- Metallic taste in drinking water
- Staining of sinks, tubs, or laundry
However, common water issues like cloudiness, odors, or general discoloration are not reliable indicators of water corrosivity alone. Accurate assessment requires pH testing and evaluation of plumbing condition rather than symptom observation alone.
How should I judge treatment capacity against my household’s daily demand?
Choosing a treatment system that matches your household’s water usage is essential to effectively manage corrosivity. Consider your average daily consumption in gallons and ensure the equipment can handle that volume without reducing water pressure or performance. Systems like the Pentair Corrosive Water Damaging Pipes Filter ship ready to configure for typical residential flow rates and capacities.
What does the measured pH range mean against the relevant federal standard, and what does it not mean?
The U.S. Geological Survey sampling of 31 wells in aquifer 112CHCTU from Lafayette Parish found a pH range of 5.5 to 8.3 standard units, with a median of 6.7. The EPA secondary standard for pH is 6.5 to 8.5, which is a guideline addressing aesthetic qualities and corrosivity but not a health-based limit. Approximately 38 of 113 sample results fell below 6.5, indicating acidic or potentially corrosive water but not a violation or unsafe condition by federal health standards.
What do 'detected,' 'median,' and 'range' mean in the sampling record on this page?
'Detected' means the pH was measured in all 113 water samples from 31 wells in Lafayette Parish’s aquifer 112CHCTU. The 'median' value of 6.7 represents the middle number when all pH values are ordered, indicating typical water acidity in the area. The 'range' of 5.5 to 8.3 shows the lowest and highest pH levels recorded, reflecting natural variability but not exceeding the aesthetic standard’s upper limit.
This record covers wells ranging from 11 to 250 feet deep and reflects groundwater conditions across Lafayette Parish aquifer 112CHCTU. For further details, consult the U.S. Geological Survey groundwater monitoring data.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2021-07-22. These figures describe groundwater sampled in this area. They are not a test of any individual private well - only a test of that well can establish its own water.
On record: U.S. Geological Survey sampling of pH in the 112CHCTU aquifer (Lafayette Parish): 113 results from 31 wells, median 6.7 standard units, range 5.5-8.3 standard units; EPA secondary standard for pH is 6.5-8.5 (aesthetic/corrosivity, not health-based); 38 of 113 sampled results fell below 6.5
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