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City of Yates Center

What EPA’s and Kansas’s records show in this utility’s water: nitrate, arsenic and other regulated chemicals; lead and copper; and violations since 2016, with the certification that handles each result.

Serves
1,335 people
Connections
833
Water source
Surface water
Based in
Yates Center, KS
County
Woodson
Owner
Local government
Hardness
Soft
The ZIP code it serves

66783

The short answer

2 results are above EPA’s legal limit, and 1 more is above the health goal. The worst: Haloacetic acids (HAA5), above the legal limit. 25 health-based violations since 2016.

What handles it

What was found

Lead and copper: EPA SDWIS monitoring periods ending 2007 to 2025.

Haloacetic acids (HAA5), total trihalomethanes (TTHM), arsenic, chromium (total), fluoride and nitrate: Kansas’s own results, samples taken from Feb. 10, 2020 to Aug. 17, 2026, with EPA’s 2012 to 2019 file for earlier years.

Above the legal limit2

Haloacetic acids (HAA5)

Forms or is added in treatment

Above the legal limit

98ppb

Highest yearly average, 2020 to 2026

2026 average: 67 ppb

Averaged by year, the highest was 98 ppb, in 2024, above EPA’s legal limit of 60 ppb. Its highest single sample was 120 ppb. In 2026, the latest year on file, its three samples averaged 67 ppb, above the limit. EPA recorded violations for haloacetic acids (HAA5) at this utility in 2023, 2024, 2025 and 2026. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 30.8 ppb, in 2019.

What handles it

No certification claim covers this compound yet.

Total trihalomethanes (TTHM)

Forms or is added in treatment

Above the legal limit

86ppb

Highest yearly average, 2020 to 2026

Averaged by year, the highest was 86 ppb, in 2026, above EPA’s legal limit of 80 ppb. Its highest single sample was 110 ppb. That was also the latest year on file. EPA recorded violations for total trihalomethanes (TTHM) at this utility in 2025 and 2026. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 38 ppb, in 2018.

What handles it

  • NSF/ANSI 53 look for “Trihalomethanes (TTHM) Reduction”
  • NSF/ANSI 58 look for “Trihalomethanes (TTHM) Reduction”

Above the health goal1

Lead

Comes from pipes, often your own

Above the health goal

2.2ppb

90th percentile, 2023 to 2025

In the latest period, 9 in 10 homes sampled were at or below 2.2 ppb, below EPA’s action level of 15 ppb. The action level drops to 10 ppb on Nov. 1, 2027. EPA’s health goal for lead is zero.

What handles it

4 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Arsenic
  • Chromium (total)
  • Fluoride
  • Nitrate

What handles it

A certification covers specific claims, not a whole standard. Look for these claims on the certifier’s listing, not the box. Wording varies a little: NSF writes “Lead Reduction,” WQA just “Lead.”

  • NSF/ANSI 53

    Claims: Trihalomethanes (TTHM) Reduction, Lead Reduction

    For: Total trihalomethanes (TTHM), Lead

    Other certifiers’ wording: VOC Reduction

  • NSF/ANSI 58

    Claims: Trihalomethanes (TTHM) Reduction, Lead Reduction

    For: Total trihalomethanes (TTHM), Lead

At the tap, or for the whole house?

Lead and copper usually come from pipes and fixtures inside or near your home. A whole-house system sits where water enters, so it cannot catch what your own plumbing adds after it. For those, the filter that counts is the one at the tap. How whole-house systems compare.

Filters with those claims on a certifier’s listing

Disclosure: TapBuff earns a commission if you buy through some links on this page. It does not change which standard or filter we name. As an Amazon Associate, TapBuff earns from qualifying purchases. How TapBuff makes money

Compare five-year costs

The best water filters for lead, ranked

Hardness

Soft, 52 mg/L (3 grains per gallon), at its one sampling point, 2015 to 2026.

Hardness is calcium and magnesium. EPA sets no limit for it: it shows up as scale on fixtures and in water heaters, and as soap that won’t lather. USGS calls water above 60 mg/L moderately hard, above 120 hard and above 180 very hard.

Softeners compared at 3 grains per gallon, salt includedSoftener or salt-free conditioner?Kansas water hardness, utility by utility

Violations since 2016

Contaminant or ruleTypePeriodMeasuredStatus
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageApril 1, 2026 to June 30, 20260.085 MG/LArchived
Total organic carbonNot enough organic matter was removed. It reacts with disinfectant to form byproducts.EPA: Treatment Technique Precursor RemovalApril 1, 2026 to June 30, 20260.66 RATIOArchived
Total Haloacetic Acids (HAA5)The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageApril 1, 2026 to June 30, 20260.076 MG/LArchived
Total Haloacetic Acids (HAA5)The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJan. 1, 2026 to March 31, 20260.065 MG/LArchived
Chlorine dioxideThe disinfectant was above its maximum allowed level.EPA: Acute Maximum Residual Disinfectant LevelJan. 1, 2026 to Jan. 31, 20260.88 MG/LResolved
Total organic carbonNot enough organic matter was removed. It reacts with disinfectant to form byproducts.EPA: Treatment Technique Precursor RemovalJan. 1, 2026 to March 31, 20260.59 RATIOArchived
Chlorine dioxideThe disinfectant was above its maximum allowed level.EPA: Acute Maximum Residual Disinfectant LevelOct. 1, 2025 to Oct. 31, 20250.81 MG/LResolved
Total organic carbonNot enough organic matter was removed. It reacts with disinfectant to form byproducts.EPA: Treatment Technique Precursor RemovalOct. 1, 2025 to Dec. 31, 20250.6 RATIOArchived
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageOct. 1, 2025 to Dec. 31, 20250.081 MG/LResolved
Total organic carbonNot enough organic matter was removed. It reacts with disinfectant to form byproducts.EPA: Treatment Technique Precursor RemovalJuly 1, 2025 to Sept. 30, 20250.49 RATIOArchived
Total organic carbonNot enough organic matter was removed. It reacts with disinfectant to form byproducts.EPA: Treatment Technique Precursor RemovalApril 1, 2025 to June 30, 20250.53 RATIOArchived
Total organic carbonNot enough organic matter was removed. It reacts with disinfectant to form byproducts.EPA: Treatment Technique Precursor RemovalJan. 1, 2025 to March 31, 20250.56 RATIOArchived
Total Haloacetic Acids (HAA5)The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJan. 1, 2025 to March 31, 20250.078 MG/LResolved
Total Haloacetic Acids (HAA5)The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageOct. 1, 2024 to Dec. 31, 20240.098 MG/LResolved
Total organic carbonNot enough organic matter was removed. It reacts with disinfectant to form byproducts.EPA: Treatment Technique Precursor RemovalOct. 1, 2024 to Dec. 31, 20240.74 RATIOArchived
Total Haloacetic Acids (HAA5)The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJuly 1, 2024 to Sept. 30, 20240.099 MG/LResolved
Total organic carbonNot enough organic matter was removed. It reacts with disinfectant to form byproducts.EPA: Treatment Technique Precursor RemovalJuly 1, 2024 to Sept. 30, 20240.74 RATIOArchived
Total organic carbonNot enough organic matter was removed. It reacts with disinfectant to form byproducts.EPA: Treatment Technique Precursor RemovalApril 1, 2024 to June 30, 20240.82 RATIOArchived
ChloriteThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageApril 1, 2024 to April 30, 20241.3 MG/LResolved
Total Haloacetic Acids (HAA5)The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageApril 1, 2024 to June 30, 20240.099 MG/LResolved
Total Haloacetic Acids (HAA5)The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJan. 1, 2024 to March 31, 20240.077 MG/LResolved
Total organic carbonNot enough organic matter was removed. It reacts with disinfectant to form byproducts.EPA: Treatment Technique Precursor RemovalJan. 1, 2024 to March 31, 2024—Resolved
Total Haloacetic Acids (HAA5)The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageOct. 1, 2023 to Dec. 31, 20230.062 MG/LResolved
Total organic carbonNot enough organic matter was removed. It reacts with disinfectant to form byproducts.EPA: Treatment Technique Precursor RemovalOct. 1, 2023 to Dec. 31, 20230.92 RATIOResolved
ChloriteThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageSept. 1, 2023 to Sept. 30, 20231.3 MG/LResolved
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 14 monitoring or reporting violations not shown.

What this report can’t tell you

  • Everything else. Haloacetic acids (HAA5), total trihalomethanes (TTHM), arsenic, chromium (total), fluoride and nitrate results here are Kansas’s own from 2020 on, with EPA’s national file for 2012 to 2019. City of Yates Center’s own annual report, which it must send you every year, has the contaminants this page does not show.

  • Your own plumbing. Lead results are the 90th percentile across homes the utility samples. Your home’s service line, solder and fixtures decide yours. A certified lab test is the only way to know.

  • What it means for your health. This page reports what the records show and EPA’s limits and goals; it is not medical advice. If you are worried about a health effect, talk to a doctor or your local health department.

  • Anything after the latest data. SDWIS data is from 2026 Q3; UCMR 5 didn’t sample this utility; Kansas’s results run from Feb. 10, 2020 to Aug. 17, 2026.

Testing your own tap

City of Yates Center’s results are for the water it sends out. What your own service line, solder and fixtures add shows up only in a test of your tap, by a lab Kansas certifies.

The lab Kansas certifies closest to the area City of Yates Center serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Pace Analytical Services, Inc - Frontenac

    Frontenac, KS · about 64 miles

    Certified for bacteria

    (913) 599-5665

All 47 certified labs for Kansas

Sources

PWSID KS2020702. Rebuilt from EPA data on Oct. 18, 2026.

Nearby

All Kansas utilities

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