City water profile

Water hardness in Rainier

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

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 Rainier

OR4100689 · Surface water · 1,932 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, 2019 to Dec 31, 2021

Violation history (62)

Imported violation history for City Of Rainier
Rule	Status	Period
Lead and Copper Rule	Resolved	Oct 1, 2024 to Aug 7, 2025
Consumer Confidence Rule	Resolved	Oct 1, 2024 to Oct 11, 2024
TTHM	Resolved	Jul 1, 2024 to Sep 30, 2024
Total Haloacetic Acids (HAA5)	Resolved	Jul 1, 2024 to Sep 30, 2024
Consumer Confidence Rule	Resolved	Jul 1, 2024 to Oct 25, 2024
Surface Water Treatment Rule	Resolved	Jan 1, 2024 to Jan 31, 2024
Interim Enhanced Surface Water Treatment Rule	Resolved	Jan 1, 2024 to Jan 31, 2024
Surface Water Treatment Rule	Resolved	Jan 1, 2024 to Jan 31, 2024
cis-1,2-Dichloroethylene	Resolved	Jan 1, 2024 to Dec 31, 2024
Xylenes, Total	Resolved	Jan 1, 2024 to Dec 31, 2024
o-Dichlorobenzene	Resolved	Jan 1, 2024 to Dec 31, 2024
p-Dichlorobenzene	Resolved	Jan 1, 2024 to Dec 31, 2024
1,1-Dichloroethylene	Resolved	Jan 1, 2024 to Dec 31, 2024
trans-1,2-Dichloroethylene	Resolved	Jan 1, 2024 to Dec 31, 2024
1,2-Dichloroethane	Resolved	Jan 1, 2024 to Dec 31, 2024
Trichloroethylene	Resolved	Jan 1, 2024 to Dec 31, 2024
1,1,2-Trichloroethane	Resolved	Jan 1, 2024 to Dec 31, 2024
Tetrachloroethylene	Resolved	Jan 1, 2024 to Dec 31, 2024
CHLOROBENZENE	Resolved	Jan 1, 2024 to Dec 31, 2024
Toluene	Resolved	Jan 1, 2024 to Dec 31, 2024
Styrene	Resolved	Jan 1, 2024 to Dec 31, 2024
1,1,1-Trichloroethane	Resolved	Jan 1, 2024 to Dec 31, 2024
Ethylbenzene	Resolved	Jan 1, 2024 to Dec 31, 2024
1,2-Dichloropropane	Resolved	Jan 1, 2024 to Dec 31, 2024
DICHLOROMETHANE	Resolved	Jan 1, 2024 to Dec 31, 2024
1,2,4-Trichlorobenzene	Resolved	Jan 1, 2024 to Dec 31, 2024
Carbon tetrachloride	Resolved	Jan 1, 2024 to Dec 31, 2024
Benzene	Resolved	Jan 1, 2024 to Dec 31, 2024
Vinyl chloride	Resolved	Jan 1, 2024 to Dec 31, 2024
Surface Water Treatment Rule	Resolved	Nov 1, 2023 to Nov 30, 2023
Surface Water Treatment Rule	Resolved	Nov 1, 2023 to Nov 30, 2023
Interim Enhanced Surface Water Treatment Rule	Resolved	Nov 1, 2023 to Nov 30, 2023
Total Polychlorinated Biphenyls (PCB)	Archived	Jan 1, 2023 to Dec 31, 2025
2,4-D	Archived	Jan 1, 2023 to Dec 31, 2025
BHC-GAMMA	Archived	Jan 1, 2023 to Dec 31, 2025
Benzo(a)pyrene	Archived	Jan 1, 2023 to Dec 31, 2025
1,2-DIBROMO-3-CHLOROPROPANE	Archived	Jan 1, 2023 to Dec 31, 2025
Carbofuran	Archived	Jan 1, 2023 to Dec 31, 2025
Chlordane	Archived	Jan 1, 2023 to Dec 31, 2025
Diquat	Archived	Jan 1, 2023 to Dec 31, 2025
Methoxychlor	Archived	Jan 1, 2023 to Dec 31, 2025
Heptachlor	Archived	Jan 1, 2023 to Dec 31, 2025
Endrin	Archived	Jan 1, 2023 to Dec 31, 2025
Dinoseb	Archived	Jan 1, 2023 to Dec 31, 2025
Di(2-ethylhexyl) adipate	Archived	Jan 1, 2023 to Dec 31, 2025
2,4,5-TP	Archived	Jan 1, 2023 to Dec 31, 2025
ETHYLENE DIBROMIDE	Archived	Jan 1, 2023 to Dec 31, 2025
Nitrate	Resolved	Jan 1, 2023 to Dec 31, 2023
Atrazine	Archived	Jan 1, 2023 to Dec 31, 2025
Heptachlor epoxide	Archived	Jan 1, 2023 to Dec 31, 2025
Simazine	Archived	Jan 1, 2023 to Dec 31, 2025
Dalapon	Archived	Jan 1, 2023 to Dec 31, 2025
Picloram	Archived	Jan 1, 2023 to Dec 31, 2025
Pentachlorophenol	Archived	Jan 1, 2023 to Dec 31, 2025
Glyphosate	Archived	Jan 1, 2023 to Dec 31, 2025
OXAMYL	Archived	Jan 1, 2023 to Dec 31, 2025
Toxaphene	Archived	Jan 1, 2023 to Dec 31, 2025
LASSO	Archived	Jan 1, 2023 to Dec 31, 2025
Hexachlorocyclopentadiene	Archived	Jan 1, 2023 to Dec 31, 2025
HEXACHLOROBENZENE	Archived	Jan 1, 2023 to Dec 31, 2025
Di(2-ethylhexyl) phthalate	Archived	Jan 1, 2023 to Dec 31, 2025
Revised Total Coliform Rule	Resolved	Jul 1, 2022 to Jul 31, 2022

City summary

What the indexed records say

Rainier has 1 published ZIP profile across Columbia County. The regional-evidence median is 21 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

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: 15.3 miles
Profiles with evidence: 1/1

Confidence labels

High: 0Moderate: 1Low: 0

Observation window: Jun 23, 2020 to Apr 21, 2026.

ZIP directory

Water reports in Rainier

Open a ZIP for site-level provenance and measurements.

ZIP code

97048

Soft

20.6 PPM

Nearest site: 15.3 mi
Confidence: Moderate

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 Oregon communities

Stayton

Marion County

18 PPM median

Klamath Falls

Klamath County

27 PPM median

Eugene

Lane County

13 PPM median

Elgin

Union County

31 PPM median

Glide

Douglas County

32 PPM median

Banks

Washington County

35 PPM median

Search all 21 Oregon cities →

Questions people ask

About water in Rainier

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.