Chloride, iron, and sulfate are present in Norfolk's groundwater and well owners should be aware of them. All three contaminants exceed EPA health standards in this area.
Norfolk sits on the Atlantic Coastal Plain, where layers of sand and clay were deposited by ancient seas. Saltwater trapped in these deeper layers thousands of years ago is slowly moving upward and mixing with fresher groundwater, bringing chloride and sulfate with it. Iron occurs naturally in the rock and soil here and dissolves into the water as it moves through.
Groundwater in Norfolk is notably high in sodium and has moderate sulfate and iron content. The coastal location and the slow inland push of old saltwater create these mineral conditions. These characteristics are widespread across wells throughout the city.
Wells in Norfolk city commonly have three contaminants that exceed EPA health standards: chloride, iron, and sulfate. High chloride levels can raise blood pressure and harm people with heart disease. Elevated iron can damage organs over time. Sulfate can cause digestive problems and laxative effects, especially in infants and people with certain health conditions.
The mineral content in county wells creates visible and annoying problems around the house. Iron leaves rust-colored stains on laundry, sinks, and bathtubs that are hard to remove. You may notice white crusty buildup on faucets and showerheads from the moderately hard water. The water can taste salty or brackish because of high sodium levels. Over time, the mineral buildup can shorten the lifespan of water heaters, dishwashers, and other appliances.
We recommend testing your well water with a comprehensive metals and minerals panel to find out what is actually in your water. Every well is different, and your well may have higher or lower levels than what is common in the county. Testing is the only way to know what treatment your water needs. A comprehensive panel typically costs between two hundred and four hundred dollars. Depending on results, treatment options like reverse osmosis systems or water softeners can remove or reduce these contaminants.
Not sure if your well is affected? Get certified results in 5–7 days.
Test Your Well Water with Tap Score →| Contaminant | Samples ⓘ | % Above MCL ⓘ | Distribution ⓘ | Confidence ⓘ | Risk ⓘ |
|---|---|---|---|---|---|
| Chloride | 13 | 92% | Low | High | |
| Iron | 13 | 31% | Low | High | |
| Sulfate | 13 | 23% | Low | High | |
| Fluoride | 13 | 0% | Low | Low | |
| Lead | 2 | 0% | Low | Safe ⓘ | |
| Manganese | 8 | 0% | Low | Low ⓘ | |
| Nitrate | 11 | 0% | Low | Low | |
| Nitrite | 8 | 0% | Low | Low ⓘ | |
| Hardness | 13 | — | Low | Low | |
| pH | 12 | — | Low | Low | |
| Sodium | 13 | — | Low | Low |
MCL = Maximum Contaminant Level (EPA limit for public water; used as benchmark for private wells). Distribution shows % of sampled wells in each concentration band. Methodology.
* Microbial contaminants (E. coli, coliform) reflect only samples from the last 10 years.
Data shows potential risk — a certified test confirms whether your water is affected.
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