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City water profile

Water hardness in Topeka

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

Utility-reported hardness

Not yet available

Check your provider and source →
State comparison
Unavailable
Evidence comparison rank
—
Matched utilities
5
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.

Topeka, City Of

KS2017701 · Surface water · 125,963 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
0.0024 mg/L
Action level
0.015 mg/L

16% of the listed benchmark

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

Violation history (2)
Imported violation history for Topeka, City Of
RuleStatusPeriod
Surface Water Treatment RuleResolvedMar 1, 2022 to Mar 31, 2022
Surface Water Treatment RuleResolvedAug 1, 2021 to Aug 31, 2021

Shawnee Co Rwd 4c

KS2017718 · Surface water · 12,000 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
0.0021 mg/L
Action level
0.015 mg/L

14% of the listed benchmark

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

Violation history (0)

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

Shawnee Co Rwd 3c

KS2017717 · Surface water · 2,675 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: Jan 1, 2021 to Dec 31, 2023

Total Haloacetic Acids (HAA5)

EPA SDWIS reported health-based violation

Reported violation
Reported level
0.073 MG/L
Maximum contaminant level
0.06 MG/L

122% of the listed benchmark

Monitoring period: Apr 1, 2025 to Jun 30, 2025

Violation history (8)
Imported violation history for Shawnee Co Rwd 3c
RuleStatusPeriod
LEAD AND COPPER RULE REVISIONSUnaddressedJul 2, 2025
Total Haloacetic Acids (HAA5)Health-basedResolvedApr 1, 2025 to Jun 30, 2025
Total Haloacetic Acids (HAA5)Health-basedResolvedJan 1, 2025 to Mar 31, 2025
Total Haloacetic Acids (HAA5)Health-basedResolvedOct 1, 2024 to Dec 31, 2024
Total Haloacetic Acids (HAA5)Health-basedResolvedJul 1, 2024 to Sep 30, 2024
Total Haloacetic Acids (HAA5)Health-basedResolvedApr 1, 2024 to Jun 30, 2024
Total Haloacetic Acids (HAA5)ResolvedMay 1, 2022 to Jul 31, 2022
TTHMResolvedMay 1, 2022 to Jul 31, 2022

Shawnee Co Rwd 2c

KS2017713 · Surface water · 700 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
0.0029 mg/L
Action level
0.015 mg/L

19% 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
1.6 mg/L
Action level
1.3 mg/L

123% of the listed benchmark

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

Violation history (3)
Imported violation history for Shawnee Co Rwd 2c
RuleStatusPeriod
LEAD AND COPPER RULE REVISIONSUnaddressedJul 2, 2025
Lead and Copper RuleResolvedSep 29, 2021 to Dec 17, 2021
Lead and Copper RuleResolvedApr 1, 2021 to Dec 17, 2021

Metro Topeka Airport Authority

KS2117703 · Surface water · 500 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: Jan 1, 2023 to Dec 31, 2023

Total Haloacetic Acids (HAA5)

EPA SDWIS reported health-based violation

Reported violation
Reported level
0.074 MG/L
Maximum contaminant level
0.06 MG/L

123% of the listed benchmark

Monitoring period: Jan 1, 2025 to Mar 31, 2025

Violation history (13)
Imported violation history for Metro Topeka Airport Authority
RuleStatusPeriod
Total Haloacetic Acids (HAA5)ArchivedOct 1, 2025 to Dec 31, 2025
TTHMArchivedOct 1, 2025 to Dec 31, 2025
Total Haloacetic Acids (HAA5)Health-basedResolvedJan 1, 2025 to Mar 31, 2025
Total Haloacetic Acids (HAA5)Health-basedResolvedOct 1, 2024 to Dec 31, 2024
Total Haloacetic Acids (HAA5)Health-basedResolvedJul 1, 2024 to Sep 30, 2024
Total Haloacetic Acids (HAA5)Health-basedResolvedApr 1, 2024 to Jun 30, 2024
Total Haloacetic Acids (HAA5)Health-basedResolvedJan 1, 2024 to Mar 31, 2024
Lead and Copper RuleResolvedOct 31, 2022 to Aug 1, 2023
Total Haloacetic Acids (HAA5)ResolvedJul 1, 2022 to Mar 8, 2023
Lead and Copper RuleResolvedJan 31, 2022 to Aug 1, 2023
Lead and Copper RuleUnaddressedJul 31, 2019
Lead and Copper RuleUnaddressedJan 31, 2019
Lead and Copper RuleUnaddressedDec 30, 2017

City summary

What the indexed records say

Topeka has 19 published ZIP profiles across Shawnee County. The regional-evidence median is 221 PPM. The city does not meet the stricter comparison standard.

The 220.5–245 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
Hard0 ZIPs
Very hard19 ZIPs

19 of 19 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
5 miles
Profiles with evidence
19/19

Confidence labels

High: 2Moderate: 16Low: 1

Observation window: May 11, 2026 to Jun 9, 2026.

ZIP directory

Water reports in Topeka

Open a ZIP for site-level provenance and measurements.

ZIP code

66409

Very Hard

245 PPM

Nearest site
13.7 mi
Confidence
Low

View full ZIP evidence →

ZIP code

66603

Very Hard

220.5 PPM

Nearest site
2.4 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

66604

Very Hard

220.5 PPM

Nearest site
2.3 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

66605

Very Hard

220.5 PPM

Nearest site
5.9 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

66606

Very Hard

220.5 PPM

Nearest site
0.8 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

66607

Very Hard

220.5 PPM

Nearest site
4.8 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

66608

Very Hard

220.5 PPM

Nearest site
2.9 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

66609

Very Hard

220.5 PPM

Nearest site
7.1 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

66610

Very Hard

220.5 PPM

Nearest site
9.5 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

66611

Very Hard

220.5 PPM

Nearest site
3.8 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

66612

Very Hard

220.5 PPM

Nearest site
2.9 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

66614

Very Hard

220.5 PPM

Nearest site
7.8 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

66615

Very Hard

241 PPM

Nearest site
9.8 mi
Confidence
High

View full ZIP evidence →

ZIP code

66616

Very Hard

220.5 PPM

Nearest site
5 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

66617

Very Hard

220.5 PPM

Nearest site
6.6 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

66618

Very Hard

241 PPM

Nearest site
5 mi
Confidence
High

View full ZIP evidence →

ZIP code

66619

Very Hard

241 PPM

Nearest site
8.7 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

66621

Very Hard

220.5 PPM

Nearest site
2.8 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

66622

Very Hard

220.5 PPM

Nearest site
3.2 mi
Confidence
Moderate

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 Topeka

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.