City water profile

Water hardness in Port Lavaca

Find official utility reports, understand hardness, and check the water system serving your home in Port Lavaca, Texas.

Utility-reported hardness

Not yet available

Check your provider and source →

State comparison: Unavailable
Evidence comparison rank: —
Matched utilities: 1
Active health records: 1

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 Port Lavaca

TX0290002 · Surface water · 12,000 people served system-wide

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

1 reported active health-based record(s) for this system

Find this utility’s official report →

Measurements (2)

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: 0.0023 mg/L
Action level: 0.015 mg/L

15% of the listed benchmark

Monitoring period: Jan 1, 2024 to Dec 31, 2024

TTHM

EPA SDWIS reported health-based violation

Reported violation

Reported level: 0.117 MG/L
Maximum contaminant level: 0.08 MG/L

146% of the listed benchmark

Monitoring period: Apr 1, 2026 to Jun 30, 2026

Violation history (24)

Imported violation history for City Of Port Lavaca
Rule	Status	Period
Public Notice	Unaddressed	May 4, 2026
TTHMHealth-based	Unaddressed	Apr 1, 2026 to Jun 30, 2026
TTHMHealth-based	Archived	Jan 1, 2026 to Mar 31, 2026
Public Notice	Resolved	Oct 24, 2025 to Dec 8, 2025
TTHMHealth-based	Archived	Oct 1, 2025 to Dec 31, 2025
LEAD AND COPPER RULE REVISIONS	Resolved	Jul 2, 2025 to Apr 20, 2026
TTHMHealth-based	Archived	Jul 1, 2025 to Sep 30, 2025
TTHMHealth-based	Archived	Apr 1, 2025 to Jun 30, 2025
TTHMHealth-based	Archived	Jan 1, 2025 to Mar 31, 2025
Lead and Copper Rule	Resolved	Dec 30, 2024 to Feb 4, 2025
TTHMHealth-based	Archived	Oct 1, 2024 to Dec 31, 2024
TTHMHealth-based	Archived	Jul 1, 2024 to Sep 30, 2024
TTHMHealth-based	Archived	Apr 1, 2024 to Jun 30, 2024
TTHMHealth-based	Archived	Jan 1, 2024 to Mar 31, 2024
TTHMHealth-based	Archived	Oct 1, 2023 to Dec 31, 2023
TTHMHealth-based	Archived	Jul 1, 2023 to Sep 30, 2023
Public Notice	Resolved	May 9, 2023 to May 11, 2023
TTHMHealth-based	Archived	Apr 1, 2023 to Jun 30, 2023
TTHMHealth-based	Archived	Jan 1, 2023 to Mar 31, 2023
TTHMHealth-based	Resolved	Jul 1, 2021 to Sep 30, 2021
TTHMHealth-based	Resolved	Apr 1, 2021 to Jun 30, 2021
TTHMHealth-based	Resolved	Jan 1, 2021 to Mar 31, 2021
Public Notice	Unaddressed	Apr 19, 2018
Consumer Confidence Rule	Unaddressed	Jul 1, 2014

City summary

What the indexed records say

Port Lavaca has 1 published ZIP profile across Calhoun County. The regional-evidence median is 84 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. At least one estimate is marked low confidence, so observation distance and date deserve extra attention.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs

Moderately hard1 ZIP

Hard0 ZIPs

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: 19.9 miles
Profiles with evidence: 1/1

Confidence labels

High: 0Moderate: 0Low: 1

Observation window: Jun 9, 2026 to Jun 9, 2026.

ZIP directory

Water reports in Port Lavaca

Open a ZIP for site-level provenance and measurements.

ZIP code

77979

Moderately Hard

84.2 PPM

Nearest site: 19.9 mi
Confidence: Low

View full ZIP evidence →

Practical next steps

Move from index to evidence

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

Continue comparing

Other Texas communities

Seadrift

Calhoun County

— No median

Athens

Henderson County

83 PPM median

Edgewood

Van Zandt County

80 PPM median

Commerce

Hunt County

80 PPM median

Emory

Rains County

80 PPM median

Point

Rains County

80 PPM median

Search all 529 Texas cities →

Questions people ask

About water in Port Lavaca

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.