Paradise Water Hardness & Quality Report (2026)

Paradise Irrigation District (PID) serves the town of Paradise in Butte County, California, providing water to approximately 5,000 connections across a 27-square-mile area. The utility blends groundwater from local wells tapping volcanic aquifers with imported surface water treated at the District's water treatment plant. Primary imported sources draw from the Sacramento River and Feather River systems via regional imports, supplemented by on-site wells during peak demand. PID maintains chlorination for disinfection in adherence to state and federal standards.

The supply originates in the upper Sacramento River watershed, spanning the foothills of the Sierra Nevada and Cascade ranges. Water percolates through fractured volcanic formations — including Miocene andesite and latite flows — interacting with granitic intrusions and sedimentary deposits rich in calcium and magnesium-bearing minerals. Natural dissolution from limestone lenses and mafic rocks elevates mineral content, resulting in moderately mineralised water. Mixed sourcing blends surface runoff with deeper groundwater, moderating extremes.

Moderately hard water promotes minor scale buildup in pipes, faucets, and fixtures, leaving spots on glassware and reducing efficiency in dishwashers and washing machines over time. Hot water heaters and coffee makers are particularly prone to mineral deposits. Regular vinegar descaling, low-flow aerators, and periodic flushing help mitigate effects. A water softener is optional but recommended for households noticing soap scum. PID maintains chlorine residuals of 0.2–0.8 ppm; the utility complies with lead and copper rules under the EPA's LCR, with non-detect levels in recent sampling.