Groundwater in Essex County contains manganese, iron, and lead at levels that exceed EPA health standards. These are serious contaminants that well owners need to address through treatment or testing.
The rocks beneath Essex County naturally contain these metals. As water moves through the ground, it dissolves these metals from the rock and soil, bringing them into wells. Lead can also come from old pipes or plumbing fixtures in homes.
Groundwater in this county is hard, driven primarily by calcium and magnesium dissolved from the bedrock. The local rock composition causes these minerals to build up in water as it filters down and through the ground. Hard water is common across many wells in Essex County.
Wells in Essex County commonly have chloride, iron, lead, and manganese at levels above EPA health standards. Lead exposure can harm children's brain development and cause learning problems, and it affects adults too by damaging kidneys and raising blood pressure. Manganese at high levels can affect the nervous system and cause movement problems. Chloride at elevated levels is a concern for people on sodium-restricted diets and can damage plumbing and septic systems.
Hard water is common in this county's wells, which means you may see white scale buildup on faucets and inside pipes, reduced soap effectiveness, and stiff laundry. Hard water can shorten the lifespan of water heaters and dishwashers by creating mineral deposits inside them. The moderate sodium levels mean some people might notice a slightly salty taste, depending on their sensitivity.
We recommend testing your well water with a comprehensive metals and minerals panel, which typically costs $200-400. Every well is different, and your well might have much higher or lower levels than what is common in the county. Testing is the only way to know what is actually in your water so you can treat it properly if needed. Ion exchange softeners or reverse osmosis systems can address both hardness and some metal contamination.
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 ⓘ |
|---|---|---|---|---|---|
| Manganese | 53 | 19% | Moderate | High | |
| Iron | 26 | 12% | Moderate | Moderate | |
| Lead | 239 | 2% | High | Low | |
| Chloride | 124 | 1% | High | Low | |
| Arsenic | 122 | 0% | High | Safe | |
| Fluoride | 138 | 0% | High | Low | |
| Nitrate | 172 | 0% | High | Low | |
| Nitrite | 151 | 0% | High | Low | |
| Radon | 2 | 0% | Low | Low ⓘ | |
| Sulfate | 3 | 0% | Low | Low ⓘ | |
| Uranium | 95 | 0% | Moderate | Low | |
| Sodium | 26 | — | Moderate | Low | |
| pH | 23 | — | Moderate | Low | |
| Hardness | 27 | — | Moderate | 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.
Order a Tap Score Test →Population-level CDC data. Not individual risk prediction.
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