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Water Hardness in Patterson, LA

Louisiana · 1 zip codes · 5 matched water systems

123 PPM
7.2 GPG
Moderately Hard
0Soft60120180300+
High Confidence — USGS Monitoring

Dataset updated March 9, 20265 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology

Source context

How this city reading is built

This city reading is a weighted rollup across 5 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis
2 USGS-backed sources
5 matched systems total for this city; USGS monitoring is used where treated-water reports are unavailable.
Water source profile
Primarily surface water
Surface-water hardness can shift with reservoirs, runoff, season, and treatment. 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 in Patterson

These systems are matched to Patterson, LA. Citywide readings are useful for comparison, but the system serving a specific address may differ from the city average.

5 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.
Morgan City Water System
LA1101005
Moderately Hard
123 PPMsurface water12,703 servedEstimated — County Avg
Patterson Water System
LA1101006
Moderately Hard
123 PPMsurface water8,456 servedHigh Confidence — USGS Monitoring
St Mary Water & Sewer Comm #3
LA1101010
Moderately Hard
123 PPMsurface water7,500 servedEstimated — Nearby Data
St Mary Parish W&S #2 Bayou Vista
LA1101015
Moderately Hard
123 PPMsurface water5,379 servedHigh Confidence — USGS Monitoring
St Mary Parish Water Sewerage Comm 1
LA1101009
Moderately Hard
123 PPMsurface water2,823 servedEstimated — Nearby Data

Zip Codes in Patterson, LA

What This Means For You

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

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

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Frequently Asked Questions

How hard is the water in Patterson, LA?

The citywide weighted average water hardness in Patterson, LA is 123 PPM (7.2 GPG), classified as moderately hard. This is based on 5 matched water systems.

Do I need a water softener in Patterson, LA?

With a citywide average hardness of 123 PPM, a water softener is worth considering for homes in Patterson. Confirm your tap reading before sizing equipment.

Is hard water in Patterson, LA 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 Patterson, LA?

Patterson, Louisiana is served by 5 matched water systems across 1 zip code.

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