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City water profile

Water hardness in Manhattan

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

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 →

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.

Manhattan, City Of

KS2016112 · Groundwater · 54,763 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
0.0019 mg/L
Action level
0.015 mg/L

13% 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.

Riley Co Rwd 1

KS2016135 · Groundwater · 2,108 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, 2021 to Dec 31, 2023

Violation history (0)

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

Colonial Gardens Mobile Home Ct

KS2016118 · Groundwater · 1,200 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, 2021 to Dec 31, 2023

Violation history (2)
Imported violation history for Colonial Gardens Mobile Home Ct
RuleStatusPeriod
Revised Total Coliform RuleArchivedJul 1, 2025 to Jul 31, 2025
ChlorineArchivedJul 1, 2025 to Jul 31, 2025

Riverchase Mobile Home Park

KS2016119 · Groundwater · 460 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
0.0035 mg/L
Action level
0.015 mg/L

23% of the listed benchmark

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

Violation history (4)
Imported violation history for Riverchase Mobile Home Park
RuleStatusPeriod
ChlorineArchivedJul 1, 2025 to Jul 31, 2025
Revised Total Coliform RuleArchivedJul 1, 2025 to Jul 31, 2025
Revised Total Coliform RuleResolvedJul 1, 2021 to Jul 31, 2021
ChlorineResolvedJul 1, 2021 to Aug 23, 2021

Konza Valley Water Benefit District

KS2016109 · Groundwater · 345 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
0.0022 mg/L
Action level
0.015 mg/L

15% of the listed benchmark

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

Violation history (2)
Imported violation history for Konza Valley Water Benefit District
RuleStatusPeriod
Revised Total Coliform RuleResolvedFeb 1, 2022 to Feb 28, 2022
ChlorineResolvedJan 1, 2022 to Mar 8, 2022

Neighbors Of Walnut Grove, Llc

KS2014923 · Groundwater · 256 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
6.0e-4 mg/L
Action level
0.015 mg/L

4% of the listed benchmark

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

Violation history (3)
Imported violation history for Neighbors Of Walnut Grove, Llc
RuleStatusPeriod
Lead and Copper RuleResolvedNov 1, 2023 to Feb 21, 2024
ChlorineResolvedApr 1, 2021 to May 11, 2021
Revised Total Coliform RuleResolvedApr 1, 2021 to Apr 30, 2021

Walnut Grove Mhc Brooks

KS2014916 · Groundwater · 203 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
6.0e-4 mg/L
Action level
0.015 mg/L

4% 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.

Hunters Island Water District

KS2016134 · Groundwater · 200 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, 2021 to Dec 31, 2023

Violation history (4)
Imported violation history for Hunters Island Water District
RuleStatusPeriod
Revised Total Coliform RuleArchivedNov 1, 2025 to Nov 30, 2025
ChlorineArchivedNov 1, 2025 to Nov 30, 2025
Revised Total Coliform RuleResolvedFeb 1, 2022 to Feb 28, 2022
ChlorineResolvedJan 1, 2022 to Mar 8, 2022

University Park Water District

KS2016103 · Groundwater · 199 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
9.0e-4 mg/L
Action level
0.015 mg/L

6% of the listed benchmark

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

Violation history (2)
Imported violation history for University Park Water District
RuleStatusPeriod
Revised Total Coliform RuleResolvedJul 1, 2021 to Jul 31, 2021
ChlorineResolvedJul 1, 2021 to Aug 2, 2021

Rocky Ford Mobile Home Court

KS2014918 · Groundwater · 120 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
0.0013 mg/L
Action level
0.015 mg/L

9% of the listed benchmark

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

Copper (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Above action level
Reported level
2.357 mg/L
Action level
1.3 mg/L

181% of the listed benchmark

Monitoring period: Jul 1, 1993 to Dec 31, 1993

Violation history (0)

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

City summary

What the indexed records say

Manhattan has 3 published ZIP profiles across Riley County. The regional-evidence median is 345 PPM. The city does not meet the stricter comparison standard.

The 345–345 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 hard3 ZIPs

3 of 3 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
15.4 miles
Profiles with evidence
3/3

Confidence labels

High: 0Moderate: 0Low: 3

Observation window: Jul 23, 2018 to Jul 24, 2018.

ZIP directory

Water reports in Manhattan

Open a ZIP for site-level provenance and measurements.

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 Manhattan

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.