City water profile

Water hardness in Casper

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

Utility-reported hardness

Not yet available

Check your provider and source →

State comparison: Unavailable
Evidence comparison rank: —
Matched utilities: 10
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.

Casper, City Of

WY5601415 · Surface water · 59,000 people served system-wide

The system names this served city; Census place overlap links the city to this 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: 0.001 mg/L
Action level: 0.015 mg/L

7% of the listed benchmark

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

Violation history (0)

No record returned in this imported window. This is not a guarantee of tap-water safety.

Vista West Water Company

WY5600069 · Surface water · 1,600 people served system-wide

The system names this served city; Census place overlap links the city to this 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, 2024 to Dec 31, 2024

Violation history (2)

Imported violation history for Vista West Water Company
Rule	Status	Period
Surface Water Treatment Rule	Resolved	Apr 1, 2024 to Apr 30, 2024
Lead and Copper Rule	Resolved	Oct 1, 2021 to Mar 14, 2023

Natrona County Int'L Airport

WY5600079 · Surface water · 423 people served system-wide

The system names this served city; Census place overlap links the city to this ZCTA.

No active health-based record in this imported snapshot

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 mg/L
Action level: 0.015 mg/L

0% of the listed benchmark

Monitoring period: Jul 1, 2025 to Dec 31, 2025

Copper (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Above action level

Reported level: 1.5 mg/L
Action level: 1.3 mg/L

115% of the listed benchmark

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

Violation history (6)

Imported violation history for Natrona County Int'L Airport
Rule	Status	Period
Revised Total Coliform Rule	Resolved	Oct 1, 2024 to Oct 31, 2024
Surface Water Treatment Rule	Resolved	Oct 1, 2024 to Oct 31, 2024
Lead and Copper Rule	Resolved	Sep 29, 2023 to Nov 2, 2023
Lead and Copper RuleHealth-based	Resolved	Apr 1, 2023 to Nov 2, 2023
Lead and Copper Rule	Resolved	Apr 1, 2023 to Nov 2, 2023
Lead and Copper Rule	Resolved	Oct 1, 2021 to Dec 2, 2022

Terrace I Mhc

WY5601231 · Surface water · 336 people served system-wide

The system names this served city; Census place overlap links the city to this 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, 2023 to Dec 31, 2025

Violation history (1)

Imported violation history for Terrace I Mhc
Rule	Status	Period
Surface Water Treatment Rule	Resolved	Aug 1, 2025 to Aug 31, 2025

Riverside Mobile Home Court

WY5601641 · Surface water · 330 people served system-wide

The system names this served city; Census place overlap links the city to this 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, 2025 to Dec 31, 2025

Violation history (2)

Imported violation history for Riverside Mobile Home Court
Rule	Status	Period
Consumer Confidence Rule	Resolved	Jul 1, 2024 to Sep 26, 2024
Lead and Copper Rule	Resolved	Oct 1, 2023 to Aug 19, 2024

Hidden Hills Mhp

WY5601339 · Surface water · 324 people served system-wide

The system names this served city; Census place overlap links the city to this 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: 0.001 mg/L
Action level: 0.015 mg/L

7% of the listed benchmark

Monitoring period: Jan 1, 2023 to Dec 31, 2025

Violation history (0)

No record returned in this imported window. This is not a guarantee of tap-water safety.

Terrace Ii Mhc

WY5601622 · Surface water · 320 people served system-wide

The system names this served city; Census place overlap links the city to this 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, 2023 to Dec 31, 2025

Violation history (0)

No record returned in this imported window. This is not a guarantee of tap-water safety.

Green Valley Mhp

WY5600969 · Surface water · 265 people served system-wide

The system names this served city; Census place overlap links the city to this 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: 0.001 mg/L
Action level: 0.015 mg/L

7% of the listed benchmark

Monitoring period: Jan 1, 2023 to Dec 31, 2025

Violation history (0)

No record returned in this imported window. This is not a guarantee of tap-water safety.

Sandy Lake Estates I&s District

WY5601581 · Surface water · 150 people served system-wide

The system names this served city; Census place overlap links the city to this 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, 2022 to Dec 31, 2024

Violation history (2)

Imported violation history for Sandy Lake Estates I&s District
Rule	Status	Period
Consumer Confidence Rule	Unaddressed	Jul 1, 2025
Consumer Confidence Rule	Unaddressed	Oct 1, 2019

Broken Wrench Llc

WY5600074 · Groundwater · 30 people served system-wide

The system names this served city; Census place overlap links the city to this 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: Jul 1, 2025 to Dec 31, 2025

Violation history (77)

Imported violation history for Broken Wrench Llc
Rule	Status	Period
Lead and Copper RuleHealth-based	Resolved	Feb 29, 2024 to Jul 30, 2025
Total Haloacetic Acids (HAA5)	Resolved	Jan 1, 2024 to Dec 31, 2024
Lead and Copper RuleHealth-based	Resolved	Jan 1, 2024 to Jul 30, 2025
TTHM	Resolved	Jan 1, 2024 to Dec 31, 2024
Lead and Copper RuleHealth-based	Resolved	Oct 1, 2023 to Jul 30, 2025
Lead and Copper RuleHealth-based	Resolved	Jul 1, 2023 to Jul 30, 2025
Lead and Copper Rule	Resolved	Jul 1, 2023 to Nov 21, 2025
Lead and Copper RuleHealth-based	Resolved	Apr 1, 2023 to Jul 30, 2025
Lead and Copper RuleHealth-based	Resolved	Apr 1, 2023 to Jun 5, 2024
Carbon tetrachloride	Archived	Jan 1, 2023 to Dec 31, 2025
Dalapon	Archived	Jan 1, 2023 to Dec 31, 2025
Methoxychlor	Archived	Jan 1, 2023 to Dec 31, 2025
Simazine	Archived	Jan 1, 2023 to Dec 31, 2025
o-Dichlorobenzene	Archived	Jan 1, 2023 to Dec 31, 2025
2,4-D	Archived	Jan 1, 2023 to Dec 31, 2025
Mercury	Archived	Jan 1, 2023 to Dec 31, 2025
Pentachlorophenol	Archived	Jan 1, 2023 to Dec 31, 2025
Thallium, Total	Archived	Jan 1, 2023 to Dec 31, 2025
cis-1,2-Dichloroethylene	Archived	Jan 1, 2023 to Dec 31, 2025
Diquat	Archived	Jan 1, 2023 to Dec 31, 2025
Arsenic	Archived	Jan 1, 2023 to Dec 31, 2025
1,2,4-Trichlorobenzene	Archived	Jan 1, 2023 to Dec 31, 2025
Trichloroethylene	Archived	Jan 1, 2023 to Dec 31, 2025
Beryllium, Total	Archived	Jan 1, 2023 to Dec 31, 2025
Endrin	Archived	Jan 1, 2023 to Dec 31, 2025
Total Polychlorinated Biphenyls (PCB)	Archived	Jan 1, 2023 to Dec 31, 2025
2,4,5-TP	Archived	Jan 1, 2023 to Dec 31, 2025
Glyphosate	Archived	Jan 1, 2023 to Dec 31, 2025
Heptachlor	Archived	Jan 1, 2023 to Dec 31, 2025
Vinyl chloride	Archived	Jan 1, 2023 to Dec 31, 2025
Benzene	Archived	Jan 1, 2023 to Dec 31, 2025
1,1-Dichloroethylene	Archived	Jan 1, 2023 to Dec 31, 2025
Cadmium	Archived	Jan 1, 2023 to Dec 31, 2025
Hexachlorocyclopentadiene	Archived	Jan 1, 2023 to Dec 31, 2025
ETHYLENE DIBROMIDE	Archived	Jan 1, 2023 to Dec 31, 2025
Nickel	Archived	Jan 1, 2023 to Dec 31, 2025
LASSO	Archived	Jan 1, 2023 to Dec 31, 2025
Chromium	Archived	Jan 1, 2023 to Dec 31, 2025
BHC-GAMMA	Archived	Jan 1, 2023 to Dec 31, 2025
Toluene	Archived	Jan 1, 2023 to Dec 31, 2025
CHLOROBENZENE	Archived	Jan 1, 2023 to Dec 31, 2025
Heptachlor epoxide	Archived	Jan 1, 2023 to Dec 31, 2025
Selenium	Archived	Jan 1, 2023 to Dec 31, 2025
HEXACHLOROBENZENE	Archived	Jan 1, 2023 to Dec 31, 2025
1,1,2-Trichloroethane	Archived	Jan 1, 2023 to Dec 31, 2025
1,1,1-Trichloroethane	Archived	Jan 1, 2023 to Dec 31, 2025
Di(2-ethylhexyl) phthalate	Archived	Jan 1, 2023 to Dec 31, 2025
1,2-DIBROMO-3-CHLOROPROPANE	Archived	Jan 1, 2023 to Dec 31, 2025
Xylenes, Total	Archived	Jan 1, 2023 to Dec 31, 2025
p-Dichlorobenzene	Archived	Jan 1, 2023 to Dec 31, 2025
Chlordane	Archived	Jan 1, 2023 to Dec 31, 2025
Tetrachloroethylene	Archived	Jan 1, 2023 to Dec 31, 2025
trans-1,2-Dichloroethylene	Archived	Jan 1, 2023 to Dec 31, 2025
Picloram	Archived	Jan 1, 2023 to Dec 31, 2025
Fluoride	Archived	Jan 1, 2023 to Dec 31, 2025
CYANIDE	Archived	Jan 1, 2023 to Dec 31, 2025
DICHLOROMETHANE	Archived	Jan 1, 2023 to Dec 31, 2025
Antimony, Total	Archived	Jan 1, 2023 to Dec 31, 2025
OXAMYL	Archived	Jan 1, 2023 to Dec 31, 2025
Di(2-ethylhexyl) adipate	Archived	Jan 1, 2023 to Dec 31, 2025
Ethylbenzene	Archived	Jan 1, 2023 to Dec 31, 2025
Carbofuran	Archived	Jan 1, 2023 to Dec 31, 2025
Dinoseb	Archived	Jan 1, 2023 to Dec 31, 2025
Barium	Archived	Jan 1, 2023 to Dec 31, 2025
Endothall	Archived	Jan 1, 2023 to Dec 31, 2025
Benzo(a)pyrene	Archived	Jan 1, 2023 to Dec 31, 2025
1,2-Dichloropropane	Archived	Jan 1, 2023 to Dec 31, 2025
1,2-Dichloroethane	Archived	Jan 1, 2023 to Dec 31, 2025
Atrazine	Archived	Jan 1, 2023 to Dec 31, 2025
Toxaphene	Archived	Jan 1, 2023 to Dec 31, 2025
Styrene	Archived	Jan 1, 2023 to Dec 31, 2025
Lead and Copper RuleHealth-based	Resolved	Nov 30, 2022 to Jun 6, 2023
Nitrate-Nitrite	Resolved	Jan 1, 2022 to Dec 31, 2022
Lead and Copper Rule	Resolved	Oct 1, 2021 to Dec 2, 2022
Consumer Confidence Rule	Resolved	Jul 1, 2021 to Jan 19, 2022
TTHM	Resolved	Jan 1, 2021 to Dec 31, 2023
Total Haloacetic Acids (HAA5)	Resolved	Jan 1, 2021 to Dec 31, 2023

City summary

What the indexed records say

Casper has 2 published ZIP profiles across Natrona County. The regional-evidence median is 221 PPM. The city does not meet the stricter comparison standard.

The 170–272 PPM range shows how much the available ZIP estimates vary within the city label. 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 hard0 ZIPs

Hard1 ZIP

Very hard1 ZIP

2 of 2 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance: 23.6 miles
Profiles with evidence: 2/2

Confidence labels

High: 0Moderate: 0Low: 2

Observation window: Jun 8, 2016 to Sep 16, 2020.

ZIP directory

Water reports in Casper

Open a ZIP for site-level provenance and measurements.

ZIP code

82604

Hard

170 PPM

Nearest site: 23.6 mi
Confidence: Low

View full ZIP evidence →

ZIP code

82609

Very Hard

272 PPM

Nearest site: 6.2 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 Wyoming communities

Edgerton

Natrona County

683 PPM median

Evansville

Natrona County

272 PPM median

Midwest

Natrona County

683 PPM median

Mills

Natrona County

— No median

Lovell

Big Horn County

228 PPM median

Sheridan

Sheridan County

229 PPM median

Search all 90 Wyoming cities →

Questions people ask

About water in Casper

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.