Well Water in San Jacinto County: What to Test and Why

Groundwater in San Jacinto County contains radon, manganese, iron, and arsenic that well owners should monitor. These contaminants exceed EPA health standards in this area, so testing your water is important.

The rock layers beneath San Jacinto County naturally release these metals into the water. Iron and manganese come from the minerals in the local bedrock, while radon seeps from radioactive elements deep underground. Arsenic also occurs naturally in certain rock types in this region.

Groundwater in San Jacinto County is moderately hard and contains elevated sodium alongside moderate iron levels. The local bedrock dissolves slowly as water flows through it, adding these minerals over time. Many wells across the county show these same mineral characteristics.

Wells in San Jacinto County commonly contain arsenic, iron, manganese, and radon at levels that exceed EPA health standards. Arsenic can damage your kidneys and increase cancer risk with long-term exposure. Radon is a radioactive gas that enters your lungs and increases lung cancer risk. Manganese at high levels can affect your nervous system and brain development in children.

County well water contains moderate iron and high sodium levels that create everyday problems. Iron stains your laundry, dishes, and fixtures an orange or brown color. The high sodium can affect how your appliances work and shortens the life of water heaters and dishwashers. You may notice a metallic taste or smell in your water.

We recommend testing your well with a comprehensive panel since multiple serious contaminants are common in this county. Your well could have higher or lower levels than what is typical here--testing is the only way to know what is actually in your water so you can treat it properly. A comprehensive metals and radon panel costs between $200 and $400. Treatment options like activated carbon filters, ion exchange systems, and radon removal can address these contaminants.