City water profile

Water hardness in Rio Vista

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

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 Rio Vista

TX1260022 · Groundwater · 1,040 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 mg/L
Action level: 0.015 mg/L

0% of the listed benchmark

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

Violation history (18)

Imported violation history for City Of Rio Vista
Rule	Status	Period
Public Notice	Unaddressed	Apr 16, 2026
Public Notice	Unaddressed	May 15, 2025
Revised Total Coliform Rule	Resolved	May 1, 2025 to May 31, 2025
Revised Total Coliform Rule	Resolved	Apr 1, 2025 to Apr 30, 2025
Chlorine	Resolved	Apr 1, 2025 to Jun 30, 2025
Revised Total Coliform Rule	Resolved	Mar 1, 2025 to Mar 31, 2025
Revised Total Coliform Rule	Resolved	Feb 1, 2025 to Feb 28, 2025
Chlorine	Resolved	Jan 1, 2025 to Mar 31, 2025
LEAD AND COPPER RULE REVISIONSHealth-based	Resolved	Oct 17, 2024 to Apr 22, 2025
LEAD AND COPPER RULE REVISIONS	Resolved	Oct 17, 2024 to Apr 22, 2025
Consumer Confidence Rule	Resolved	Jul 1, 2024 to Jul 17, 2025
Public Notice	Resolved	Feb 1, 2024 to Mar 7, 2024
Consumer Confidence Rule	Resolved	Jul 1, 2023 to Nov 3, 2023
Revised Total Coliform Rule	Resolved	Jan 1, 2023 to Jan 31, 2023
Public Notice	Resolved	Sep 1, 2022 to Dec 8, 2022
Revised Total Coliform Rule	Resolved	Aug 1, 2021 to Aug 31, 2021
Consumer Confidence Rule	Resolved	Jul 1, 2021 to Nov 3, 2023
Public Notice	Resolved	Mar 15, 2021 to Jul 17, 2025

City summary

What the indexed records say

Rio Vista has 1 published ZIP profile across Johnson County. The regional-evidence median is 9 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

Soft1 ZIP

Moderately hard0 ZIPs

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: 6.9 miles
Profiles with evidence: 1/1

Confidence labels

High: 0Moderate: 0Low: 1

Observation window: Dec 1, 2016 to Dec 1, 2016.

ZIP directory

Water reports in Rio Vista

Open a ZIP for site-level provenance and measurements.

ZIP code

76093

Soft

9.1 PPM

Nearest site: 6.9 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

Alvarado

Johnson County

107 PPM median

Burleson

Johnson County

96 PPM median

Cleburne

Johnson County

120 PPM median

Godley

Johnson County

9 PPM median

Grandview

Johnson County

10 PPM median

Keene

Johnson County

120 PPM median

Search all 529 Texas cities →

Questions people ask

About water in Rio Vista

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.