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City water profile

Water hardness in Moscow

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

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.

Moscow Water Dept

ID2290023 · Groundwater · 26,000 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
0.004 mg/L
Action level
0.015 mg/L

27% of the listed benchmark

Monitoring period: Jan 1, 2022 to Dec 31, 2024

Violation history (23)
Imported violation history for Moscow Water Dept
RuleStatusPeriod
TTHMResolvedJan 1, 2025 to Nov 25, 2025
Total Haloacetic Acids (HAA5)ResolvedJan 1, 2025 to Nov 25, 2025
1,2,4-TrichlorobenzeneResolvedJul 1, 2021 to Sep 30, 2021
cis-1,2-DichloroethyleneResolvedJul 1, 2021 to Sep 30, 2021
p-DichlorobenzeneResolvedJul 1, 2021 to Sep 30, 2021
1,2-DichloroethaneResolvedJul 1, 2021 to Sep 30, 2021
1,1,1-TrichloroethaneResolvedJul 1, 2021 to Sep 30, 2021
1,2-DichloropropaneResolvedJul 1, 2021 to Sep 30, 2021
TrichloroethyleneResolvedJul 1, 2021 to Sep 30, 2021
1,1,2-TrichloroethaneResolvedJul 1, 2021 to Sep 30, 2021
TetrachloroethyleneResolvedJul 1, 2021 to Sep 30, 2021
CHLOROBENZENEResolvedJul 1, 2021 to Sep 30, 2021
TolueneResolvedJul 1, 2021 to Sep 30, 2021
StyreneResolvedJul 1, 2021 to Sep 30, 2021
DICHLOROMETHANEResolvedJul 1, 2021 to Sep 30, 2021
1,1-DichloroethyleneResolvedJul 1, 2021 to Sep 30, 2021
Xylenes, TotalResolvedJul 1, 2021 to Sep 30, 2021
Vinyl chlorideResolvedJul 1, 2021 to Sep 30, 2021
trans-1,2-DichloroethyleneResolvedJul 1, 2021 to Sep 30, 2021
BenzeneResolvedJul 1, 2021 to Sep 30, 2021
o-DichlorobenzeneResolvedJul 1, 2021 to Sep 30, 2021
EthylbenzeneResolvedJul 1, 2021 to Sep 30, 2021
Carbon tetrachlorideResolvedJul 1, 2021 to Sep 30, 2021

City summary

What the indexed records say

Moscow has 2 published ZIP profiles across Latah County. The regional-evidence median is 110 PPM. The city does not meet the stricter comparison standard.

The 109.5–110 PPM range shows how much the available ZIP estimates vary within the city label.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs
Moderately hard2 ZIPs
Hard0 ZIPs
Very hard0 ZIPs

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
3.7 miles
Profiles with evidence
2/2

Confidence labels

High: 2Moderate: 0Low: 0

Observation window: Aug 2, 2016 to Aug 7, 2024.

ZIP directory

Water reports in Moscow

Open a ZIP for site-level provenance and measurements.

ZIP code

83843

Moderately Hard

110 PPM

Nearest site
3.7 mi
Confidence
High

View full ZIP evidence →

ZIP code

83844

Moderately Hard

109.5 PPM

Nearest site
0.9 mi
Confidence
High

View full ZIP evidence →

Practical next steps

Move from index to evidence

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

Questions people ask

About water in Moscow

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.