Hard water in New Iberia, LA
County estimate from 620 water samples in Iberia Parish · July 2026
- LA typical
- 102 mg/L
- Softener for 3 people
- 24k grain
- Data
- County estimate
Water samples from around New Iberia put hardness at about 136 mg/L (8.0 gpg), which would be hard on the USGS scale. Treat this as a rough guide: it is the median of 620 samples taken across Iberia Parish, mostly wells and streams, not a test of New Iberia's treated tap water.
New Iberia sits 34 mg/L above the typical Louisiana figure of 102. Of the 10 nearest cities we track, 7 have softer water and 3 have harder. The range nearby runs from 19 mg/L in Port Allen to 360 in Houma.
What 136 mg/L means at home
Expect white crust on faucets and showerheads, plus spots on dishes that come out of the dishwasher.
Kettles collect scale quickly. Water heaters build up sediment at the bottom of the tank, which makes them work harder over time.
Soap and detergent need a little more to lather, and soap scum shows up in the tub.
Hardness is not a health problem, and EPA sets no limit for it. It is a matter of scale and soap.
What to do about it
At 136 mg/L most of the trouble is scale, and only a few things deal with it.
Ion-exchange water softener
The standard whole-house fix. It swaps calcium and magnesium for sodium or potassium and needs salt plus a drain. Size it with the calculator below.
Salt-free conditioner
No salt and no drain line. It changes how minerals form scale instead of removing them, so water still tests hard.
Reverse osmosis or carbon filter
Under-sink reverse osmosis removes minerals from drinking water only. Plain carbon filters improve taste but do not soften.
3 people × 75 gallons a day × 8.0 gpg = 1,789 grains a day. A 24,000-grain unit regenerates about every 13 days.
EPA record for New Iberia's water system
We could not match New Iberia to a community water system in EPA's records. Your water bill or the yearly Consumer Confidence Report names the system and its ID.
Questions
Is New Iberia water hard?
Yes. It measures about 136 mg/L (8.0 grains per gallon), which the USGS classes as hard.
What is the water hardness in New Iberia in grains per gallon?
About 8.0 gpg. One grain per gallon equals 17.1 mg/L, so 136 mg/L divided by 17.1 gives 8.0.
What size water softener do I need in New Iberia?
For 3 people using 75 gallons each per day, 8.0 gpg works out to about 1,789 grains a day. A 24,000-grain softener covers that with a regeneration about every 13 days.
Nearby cities
- Broussard159 mg/LHard
- Youngsville147 mg/LHard
- Lafayette102 mg/LModerately hard
- Scott99 mg/LModerately hard
- Carencro99 mg/LModerately hard
- Port Allen19 mg/LSoft
- Baton Rouge23 mg/LSoft
- Prairieville66 mg/LModerately hard
- Zachary55 mg/LSoft
- Houma360 mg/LVery hard
Hardness data: TapWaterData US Water Hardness (county estimate, July 4, 2026), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.