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City water profile

Water hardness in Opelousas

Find official utility reports, understand hardness, and check the water system serving your home in Opelousas, Louisiana.

Utility-reported hardness

Not yet available

Check your provider and source →
State comparison
Unavailable
Evidence comparison rank
—
Matched utilities
1
Active health records
0

Your tap water

What does the utility report?

Match the utility name to your water bill. These results describe the utility’s water, not a test at your home. A ZIP can include several water systems.

Utility hardness unavailable in this index

Nearby river or groundwater samples cannot tell us the hardness coming out of your tap. Ask your water provider for total hardness as CaCO₃, or test it at home.

Find an official utility report →
Convert a hardness result →Test your tap →

Match the name on your water bill

Your utility’s measurements and compliance records

These are possible serving systems. A record for one system does not apply to every home in this ZIP. Confirm your provider before interpreting a measurement or notice. Federal records can lag current utility notices.

EPA snapshot: 2026Q2. Historical window begins Jan 1, 2021.

City Of Opelousas Water System

LA1097010 · Groundwater · 20,388 people served system-wide

A municipal system, in-state city, and served county all agree with this Census ZCTA.

No active health-based record in this imported snapshot

Find this utility’s official report →
Measurements (1)

An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.

Lead (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Below action level
Reported level
0.002 mg/L
Action level
0.015 mg/L

13% of the listed benchmark

Monitoring period: Jan 1, 2021 to Dec 31, 2023

Violation history (8)
Imported violation history for City Of Opelousas Water System
RuleStatusPeriod
Groundwater RuleHealth-basedResolvedApr 2, 2025 to Dec 18, 2025
Public NoticeResolvedJul 17, 2024 to Jan 30, 2025
Consumer Confidence RuleResolvedJul 1, 2024 to Jun 13, 2025
Groundwater RuleHealth-basedResolvedJun 4, 2024 to Feb 19, 2025
Groundwater RuleHealth-basedResolvedOct 27, 2021 to Feb 1, 2023
Groundwater RuleHealth-basedResolvedOct 27, 2021 to Jan 31, 2023
Groundwater RuleHealth-basedResolvedOct 27, 2021 to Oct 27, 2021
Groundwater RuleHealth-basedResolvedOct 27, 2021 to Feb 1, 2023

City summary

What the indexed records say

Opelousas has 1 published ZIP profile across St. Landry Parish. The regional-evidence median is 128 PPM. The city does not meet the stricter comparison standard.

Because only one ZIP is represented, the city median and range are the same local estimate. It should not be read as multiple independent samples across the community.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs
Moderately hard0 ZIPs
Hard1 ZIP
Very hard0 ZIPs

1 of 1 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
10.8 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 1Low: 0

Observation window: Jul 16, 2020 to Jul 21, 2021.

ZIP directory

Water reports in Opelousas

Open a ZIP for site-level provenance and measurements.

ZIP code

70570

Hard

128 PPM

Nearest site
10.8 mi
Confidence
Moderate

View full ZIP evidence →

Practical next steps

Move from index to evidence

  1. 1. Open your ZIP. Check distance, dates, confidence, and the associated utility.
  2. 2. Read the current CCR. Confirm source water, detections, limits, ranges, and notices.
  3. 3. Use a measured hardness result. Confirm health concerns or treatment sizing with the right method.

Questions people ask

About water in Opelousas

Is the water hard?

Check the utility-reported result above when available. Nearby environmental samples cannot establish tap-water hardness. Ask your provider or test your tap.

Is the tap water safe?

Compliance history is utility-wide and cannot guarantee conditions at every tap. Check current notices and test when address-specific evidence is needed.

Do I need treatment?

Choose treatment only after confirming the problem at the property. A softener targets hardness; contaminant treatment requires a matching, verified performance claim.