City water profile

Water hardness in College Place

Find official utility reports, understand hardness, and check the water system serving your home in College Place, Washington.

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.

College Place Water Dept

WA5314050 · Groundwater · 8,147 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: 0.0021 mg/L
Action level: 0.015 mg/L

14% of the listed benchmark

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

Violation history (100)

Imported violation history for College Place Water Dept
Rule	Status	Period
Pentachlorophenol	Resolved	Jul 1, 2022 to Sep 30, 2022
cis-1,2-Dichloroethylene	Resolved	Jul 1, 2022 to Sep 30, 2022
DICHLOROMETHANE	Resolved	Jul 1, 2022 to Sep 30, 2022
o-Dichlorobenzene	Resolved	Jul 1, 2022 to Sep 30, 2022
p-Dichlorobenzene	Resolved	Jul 1, 2022 to Sep 30, 2022
Vinyl chloride	Resolved	Jul 1, 2022 to Sep 30, 2022
Carbon tetrachloride	Resolved	Jul 1, 2022 to Sep 30, 2022
Trichloroethylene	Resolved	Jul 1, 2022 to Sep 30, 2022
1,1,2-Trichloroethane	Resolved	Jul 1, 2022 to Sep 30, 2022
Benzene	Resolved	Jul 1, 2022 to Sep 30, 2022
Ethylbenzene	Resolved	Jul 1, 2022 to Sep 30, 2022
Styrene	Resolved	Jul 1, 2022 to Sep 30, 2022
trans-1,2-Dichloroethylene	Resolved	Jul 1, 2022 to Sep 30, 2022
1,2-Dichloroethane	Resolved	Jul 1, 2022 to Sep 30, 2022
Dinoseb	Resolved	Jul 1, 2022 to Sep 30, 2022
CHLOROBENZENE	Resolved	Jul 1, 2022 to Sep 30, 2022
2,4,5-TP	Resolved	Jul 1, 2022 to Sep 30, 2022
1,1,1-Trichloroethane	Resolved	Jul 1, 2022 to Sep 30, 2022
1,2-Dichloropropane	Resolved	Jul 1, 2022 to Sep 30, 2022
Toluene	Resolved	Jul 1, 2022 to Sep 30, 2022
Dalapon	Resolved	Jul 1, 2022 to Sep 30, 2022
1,1-Dichloroethylene	Resolved	Jul 1, 2022 to Sep 30, 2022
Tetrachloroethylene	Resolved	Jul 1, 2022 to Sep 30, 2022
1,2,4-Trichlorobenzene	Resolved	Jul 1, 2022 to Sep 30, 2022
Picloram	Resolved	Jul 1, 2022 to Sep 30, 2022
Picloram	Resolved	Jan 1, 2022 to Mar 31, 2022
cis-1,2-Dichloroethylene	Resolved	Jan 1, 2022 to Mar 31, 2022
DICHLOROMETHANE	Resolved	Jan 1, 2022 to Mar 31, 2022
o-Dichlorobenzene	Resolved	Jan 1, 2022 to Mar 31, 2022
p-Dichlorobenzene	Resolved	Jan 1, 2022 to Mar 31, 2022
Vinyl chloride	Resolved	Jan 1, 2022 to Mar 31, 2022
1,1-Dichloroethylene	Resolved	Jan 1, 2022 to Mar 31, 2022
1,1,1-Trichloroethane	Resolved	Jan 1, 2022 to Mar 31, 2022
Tetrachloroethylene	Resolved	Jan 1, 2022 to Mar 31, 2022
CHLOROBENZENE	Resolved	Jan 1, 2022 to Mar 31, 2022
Benzene	Resolved	Jan 1, 2022 to Mar 31, 2022
Toluene	Resolved	Jan 1, 2022 to Mar 31, 2022
Ethylbenzene	Resolved	Jan 1, 2022 to Mar 31, 2022
Styrene	Resolved	Jan 1, 2022 to Mar 31, 2022
1,1,2-Trichloroethane	Resolved	Jan 1, 2022 to Mar 31, 2022
Dalapon	Resolved	Jan 1, 2022 to Mar 31, 2022
1,2,4-Trichlorobenzene	Resolved	Jan 1, 2022 to Mar 31, 2022
Trichloroethylene	Resolved	Jan 1, 2022 to Mar 31, 2022
Dinoseb	Resolved	Jan 1, 2022 to Mar 31, 2022
Carbon tetrachloride	Resolved	Jan 1, 2022 to Mar 31, 2022
2,4,5-TP	Resolved	Jan 1, 2022 to Mar 31, 2022
1,2-Dichloroethane	Resolved	Jan 1, 2022 to Mar 31, 2022
Pentachlorophenol	Resolved	Jan 1, 2022 to Mar 31, 2022
1,2-Dichloropropane	Resolved	Jan 1, 2022 to Mar 31, 2022
trans-1,2-Dichloroethylene	Resolved	Jan 1, 2022 to Mar 31, 2022
DICHLOROMETHANE	Resolved	Oct 1, 2021 to Dec 31, 2021
o-Dichlorobenzene	Resolved	Oct 1, 2021 to Dec 31, 2021
trans-1,2-Dichloroethylene	Resolved	Oct 1, 2021 to Dec 31, 2021
1,2-Dichloroethane	Resolved	Oct 1, 2021 to Dec 31, 2021
1,1,1-Trichloroethane	Resolved	Oct 1, 2021 to Dec 31, 2021
Carbon tetrachloride	Resolved	Oct 1, 2021 to Dec 31, 2021
Trichloroethylene	Resolved	Oct 1, 2021 to Dec 31, 2021
1,1,2-Trichloroethane	Resolved	Oct 1, 2021 to Dec 31, 2021
Tetrachloroethylene	Resolved	Oct 1, 2021 to Dec 31, 2021
CHLOROBENZENE	Resolved	Oct 1, 2021 to Dec 31, 2021
Benzene	Resolved	Oct 1, 2021 to Dec 31, 2021
Toluene	Resolved	Oct 1, 2021 to Dec 31, 2021
Ethylbenzene	Resolved	Oct 1, 2021 to Dec 31, 2021
Styrene	Resolved	Oct 1, 2021 to Dec 31, 2021
Dalapon	Resolved	Oct 1, 2021 to Dec 31, 2021
Picloram	Resolved	Oct 1, 2021 to Dec 31, 2021
2,4,5-TP	Resolved	Oct 1, 2021 to Dec 31, 2021
Pentachlorophenol	Resolved	Oct 1, 2021 to Dec 31, 2021
p-Dichlorobenzene	Resolved	Oct 1, 2021 to Dec 31, 2021
1,2,4-Trichlorobenzene	Resolved	Oct 1, 2021 to Dec 31, 2021
Vinyl chloride	Resolved	Oct 1, 2021 to Dec 31, 2021
1,2-Dichloropropane	Resolved	Oct 1, 2021 to Dec 31, 2021
Dinoseb	Resolved	Oct 1, 2021 to Dec 31, 2021
cis-1,2-Dichloroethylene	Resolved	Oct 1, 2021 to Dec 31, 2021
1,1-Dichloroethylene	Resolved	Oct 1, 2021 to Dec 31, 2021
Picloram	Resolved	Jul 1, 2021 to Sep 30, 2021
Dinoseb	Resolved	Jul 1, 2021 to Sep 30, 2021
DICHLOROMETHANE	Resolved	Jul 1, 2021 to Sep 30, 2021
o-Dichlorobenzene	Resolved	Jul 1, 2021 to Sep 30, 2021
p-Dichlorobenzene	Resolved	Jul 1, 2021 to Sep 30, 2021
1,1-Dichloroethylene	Resolved	Jul 1, 2021 to Sep 30, 2021
trans-1,2-Dichloroethylene	Resolved	Jul 1, 2021 to Sep 30, 2021
1,2-Dichloroethane	Resolved	Jul 1, 2021 to Sep 30, 2021
Carbon tetrachloride	Resolved	Jul 1, 2021 to Sep 30, 2021
1,2-Dichloropropane	Resolved	Jul 1, 2021 to Sep 30, 2021
Trichloroethylene	Resolved	Jul 1, 2021 to Sep 30, 2021
1,1,2-Trichloroethane	Resolved	Jul 1, 2021 to Sep 30, 2021
CHLOROBENZENE	Resolved	Jul 1, 2021 to Sep 30, 2021
Toluene	Resolved	Jul 1, 2021 to Sep 30, 2021
Benzene	Resolved	Jul 1, 2021 to Sep 30, 2021
Vinyl chloride	Resolved	Jul 1, 2021 to Sep 30, 2021
Styrene	Resolved	Jul 1, 2021 to Sep 30, 2021
Dalapon	Resolved	Jul 1, 2021 to Sep 30, 2021
1,1,1-Trichloroethane	Resolved	Jul 1, 2021 to Sep 30, 2021
cis-1,2-Dichloroethylene	Resolved	Jul 1, 2021 to Sep 30, 2021
Pentachlorophenol	Resolved	Jul 1, 2021 to Sep 30, 2021
1,2,4-Trichlorobenzene	Resolved	Jul 1, 2021 to Sep 30, 2021
2,4,5-TP	Resolved	Jul 1, 2021 to Sep 30, 2021
Tetrachloroethylene	Resolved	Jul 1, 2021 to Sep 30, 2021
Ethylbenzene	Resolved	Jul 1, 2021 to Sep 30, 2021

City summary

What the indexed records say

College Place has 1 published ZIP profile across Walla Walla County. The regional-evidence median is 81 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: 0.2 miles
Profiles with evidence: 1/1

Confidence labels

High: 0Moderate: 0Low: 1

Observation window: Aug 8, 2016 to Sep 17, 2019.

ZIP directory

Water reports in College Place

Open a ZIP for site-level provenance and measurements.

ZIP code

99324

Moderately Hard

81.2 PPM

Nearest site: 0.2 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 Washington communities

Waitsburg

Walla Walla County

82 PPM median

Walla Walla

Walla Walla County

30 PPM median

Napavine

Lewis County

71 PPM median

Ferndale

Whatcom County

94 PPM median

Nooksack

Whatcom County

94 PPM median

Sumas

Whatcom County

94 PPM median

Search all 133 Washington cities →

Questions people ask

About water in College Place

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.