If you see high total dissolved solids in Monterey County well water, what does that mean for treatment?
Many homeowners in Monterey County may notice their well water has unusual taste or causes staining. The U.S. Geological Survey has sampled 122 wells in the Monterey County aquifer over the past decade, measuring chloride levels ranging widely from 0.11 to 7500 mg/L, with a median near 113 mg/L. Elevated total dissolved solids like chloride can impact water aesthetics and plumbing longevity but do not automatically indicate a safety issue. Deciding if you need total well water treatment depends on testing your own well water, as area results offer context but not a precise condition for your home.
If you rely on local public water records, how do those differ from private well testing?
Public water system records in Monterey County reflect water quality at a community scale and comply with health-based standards. The U.S. Geological Survey data specifically addresses groundwater quality in the region’s aquifers across many wells. Private well testing measures water quality at your property and is the only way to determine your household’s actual water conditions. Since area-wide sampling shows variability, your well may be above or below median values. Testing your well for total dissolved solids, particularly chloride, helps determine if a treatment system is appropriate.
If your well is deep or shallow, how does well depth affect what you should expect?
The sampled wells spanned depths from 20 to more than 4,400 feet, reflecting different aquifer zones. Typically, deeper wells may access water with distinct mineral content compared to shallow wells. In Monterey County, chloride levels vary widely regardless of depth, so well depth alone does not predict water quality. Knowing your well depth combined with specific water testing results helps identify the appropriate treatment level.
How often do you need to maintain the Pentair Total Well Chlorination System?
The Pentair Total Well Chlorination System ships ready to configure and requires maintenance aligned with household water use and water quality changes. Generally, media replacement or system refresh cycles depend on the grain capacity of 32,000 grains and the volume of water treated. Routine monitoring of water quality and system performance guides the timing for maintenance and media refresh. This system is designed to address taste and staining issues related to total dissolved solids requiring chlorination treatment.
Why does the U.S. Geological Survey chloride secondary standard matter for home water?
Chloride has a secondary standard of 250 mg/L based on aesthetics such as taste and staining potential, not health. In Monterey County sampling, 57 results exceeded this threshold, indicating some wells might produce water with noticeable taste or cause plumbing discoloration. However, exceeding the secondary standard is not a violation or a health risk. Understanding this distinction helps homeowners interpret test results and treatment needs without confusing aesthetic concerns with safety issues.
What you should NOT conclude from Monterey County aquifer data
The government data reflects regional aquifer conditions, not any single well’s water quality. Detection of chloride or the median value reported does not establish your well’s exact composition. Only a specific laboratory test of your well water can confirm chloride levels and other characteristics necessary to choose effective treatment. Area data provides a valuable overview but should not substitute for personal testing when deciding on a treatment system like the Pentair Total Well Chlorination System.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2023-02-13. 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 Chloride in the aquifer (Monterey County): 214 results from 122 wells, median 113.0 mg/L, range 0.11-7500.0 mg/L; 57 above an AESTHETIC secondary standard only (secondary standard 250.0 mg/L (aesthetic)) - not a health finding