Madisonville, St. Tammany Parish · PWS ID LA1103189
Guste Island water carries chloramine at 2.5 parts per million, and it tests soft at 14.1 milligrams per liter, about 0.8 grains. The published report also shows manganese at the aesthetic limit.
Beneath the surface
Magnolia - Guste Island (CSWR) · PWS ID LA1103189 · 2025 water quality report
The Complete Home package: whole-home catalytic carbon for the chloramine at every tap, plus reverse osmosis at the kitchen sink for drinking water, ice, and spot-free glasses at that tap. Iron filtration handles the staining before it reaches your fixtures. Guste Island tests soft, so no softener goes in.
Get my written plan and priceYour water arrives with chloramine in it, at 2.5 parts per million. That is the disinfectant Magnolia - Guste Island (CSWR) uses, and it is what people taste in coffee, in ice, and in the first glass of the day. Chloramine does not gas off in a pitcher the way chlorine does, so catalytic carbon is the piece that takes it out, at every tap in the house.
The hardness here is 14.1 milligrams per liter, about 0.8 grains. That is soft water by any measure, so a softener would have almost nothing to work on and we leave it out of the plan.
The water here is groundwater, pumped from Guste Island Water Supply Well 01. The report also shows manganese at the aesthetic limit. That is the orange or dark staining that shows up in tubs, sinks, and laundry over time, and iron filtration is built for exactly that.
Boundary confidence: likely. Systems in this area interlock, so we confirm yours by address before we quote anything.
Tell us your address and we pull the report for the system that actually serves it, then put the recommendation and the price in writing before any work starts. A licensed plumber does the install.
