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Water Hardness in 70420

Abita Springs, Louisiana · St. Tammany Parish County

7 PPM
0.4 GPG
Soft
0Soft60120180300+
High Confidence — USGS Monitoring

Dataset updated March 9, 2026Matched to 12 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology

Source context

How this ZIP reading is built

This ZIP reading is built from 12 matched water systems. When more than one system is matched, the displayed value is weighted toward larger known service populations when that data is available.

Source basis
6 USGS-backed sources
12 matched systems total for this ZIP; USGS monitoring is used where treated-water reports are unavailable.
Water source profile
Primarily groundwater
Groundwater commonly picks up calcium and magnesium after contact with rock and soil. This profile is weighted by known population served across matched systems.
Data recency
March 9, 2026
Dataset rebuilt March 9, 2026; individual utility reporting years can vary.

Hardness is a mineral-content reading, not a drinking-water safety rating. Use it for scale, appliance, and softener decisions; check your utility report or test your tap before sizing treatment equipment. See how we calculate local readings.

Water Systems Serving 70420

These are the systems matched to this ZIP code. The displayed ZIP value is weighted toward larger known service populations when population data is available.

12 water systems
PWSID is the public water system identifier. Data Source shows whether the hardness value comes from a treated-water report, USGS monitoring, or a local estimate; source year is shown when available.
Slidell Water Supply
LA1103041
Soft
7 PPMgroundwater35,547 servedEstimated — County Avg
St Tam Parish- Bedico -Faubourg-Coquille
LA1103149
Soft
7 PPMgroundwater18,372 servedHigh Confidence — USGS Monitoring
St Tam Parish - Briarwood Terrace
LA1103079
Soft
7 PPMgroundwater17,536 servedHigh Confidence — USGS Monitoring
Covington Water Supply
LA1103011
Soft
7 PPMgroundwater16,185 servedEstimated — County Avg
Mandeville Water Supply
LA1103023
Soft
6 PPMgroundwater13,000 servedHigh Confidence — USGS Monitoring
Showing the first 5 systems. Expand to review all matched systems.

Nearby Zip Codes

704647704317704717704457704357704487704337704637704527704607704477704377

What This Means For You

Recommendations are based on the displayed ZIP hardness reading. Confirm your tap reading before sizing or buying treatment equipment.

Your Water Is Soft

Your water hardness is in the soft range. You likely don't need a water softener. Enjoy your naturally soft water!

Know your water hardness?

If you've tested your water or have your utility's CCR report, share your reading to help us improve accuracy for Abita Springs, LA (70420).

Submit Your Data

Frequently Asked Questions

Is the water hard in Abita Springs, LA (70420)?

The average water hardness in 70420 is 7 PPM (0.4 GPG), which is classified as soft.

Do I need a water softener in 70420?

At 7 PPM, your water is relatively soft. A water softener is generally not necessary.

Is hard water in 70420 safe to drink?

Water hardness itself is a mineral-content reading, not a drinking-water safety rating. Calcium and magnesium are naturally occurring minerals, but you should check your utility's Consumer Confidence Report for contaminant and compliance information.

How many water systems serve 70420?

Zip code 70420 in Abita Springs, Louisiana is served by 12 water systems.

Learn More About Your Water

Water Hardness Scale: PPM and GPG Chart

Use the USGS water hardness scale to compare PPM, GPG, and mg/L levels from soft to very hard water.

10 min read

How to Test Water Hardness at Home

Compare free lookups, soap tests, test strips, liquid drop kits, and lab tests for measuring water hardness.

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