How hard is the water in Acadia Parish, LA?
13.1 grains per gallon
A softener will pay its way here.
The median hardness measured in Acadia Parish, LA is 224 mg/L as calcium carbonate, which is 13.1 gpg. That is very hard on the USGS scale. It comes from 52 samples at 40 sites between 1995 and 2024, drawn from groundwater wells, which is what most taps and private wells in the county draw on.
How much it varies here
Half the sites came in between 10 and 15.1 gpg. That spread crosses a decision line, so some homes here land on a different answer. A $10 test strip on your own tap settles it. Confidence in the county figure: high (how it is measured).
What to do next
At 13.1 gpg a softener pays its way here. Before you buy, check the quoted unit's grain capacity against the sizing table below, and ask whether it regenerates on demand, which uses less salt than a timer. Call your utility for its own report if you are on city water. Because Acadia Parish straddles a decision line, check your own tap with a $10 test strip before you spend anything.
More on sizing a softener for your household.
From 7.2 to 27.8 gpg
The softest single sample on record in Acadia Parish was 124 mg/L and the hardest 476 mg/L, a 4-fold gap. The top quarter of sites read above 15.1 gpg and the bottom quarter below 10 gpg.
Wells 13.1 gpg, rivers and lakes 5.8 gpg
52 groundwater samples from 40 wells put the median at 223.5 mg/L. 478 surface samples from 13 sites put it at 100 mg/L. In Acadia Parish the wells come out 7.3 gpg harder. Groundwater sits in contact with rock for years and picks up calcium and magnesium as it goes, so wells usually read harder. A utility here that draws from the river can deliver noticeably different water from a private well next door.
What a softener would cost to run
For a household of 3, a 24,000-grain unit covers a week between regenerations. Expect about 285 lb of salt a year (8 bags of 40 lb, about $51), and roughly 2,346 gallons of regeneration water. Installed, most units run $1,000 to $4,500; spread over 15 years with salt, that is about $151 a year.
Sizing at 13.1 gpg
| People | Grains a day | Unit | Salt a year |
|---|---|---|---|
| 1 | 786 | 24,000 | 96 lb |
| 2 | 1,572 | 24,000 | 191 lb |
| 4 | 3,144 | 24,000 | 383 lb |
| 6 | 4,716 | 40,000 | 574 lb |
Acadia Parish against the rest of Louisiana
Among the 64 Louisiana counties with data, Acadia Parish is number 19 of 64 counting from the hardest. Across the whole country it is harder than 62% of counties.
Softest in Louisiana: Lincoln Parish at 0.1 gpg. Hardest: St. Bernard Parish at 53.9 gpg. Closest to Acadia Parish: Plaquemines Parish (13), Iberia Parish (14), St. Charles Parish (11.4).