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City of Timken

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
39 people
Connections
36
Water source
Groundwater
Based in
Timken, KS
County
Rush
Owner
Local government
Hardness
Very hard
The ZIP code it serves

67575

The short answer

1 result is above the limit’s level with no violation recorded, and 3 more are above the health goal. The worst: Haloacetic acids (HAA5), above the limit’s level, no violation. No health-based violations on file since 2016.

What handles it

What was found

Lead and copper: EPA SDWIS monitoring periods ending 2015 to 2028.

Haloacetic acids (HAA5), arsenic, uranium, total trihalomethanes (TTHM), nitrate, fluoride and chromium (total): Kansas’s own results, samples taken from Feb. 11, 2020 to Feb. 18, 2026, with EPA’s 2012 to 2019 file for earlier years.

Above the limit’s level, no violation recorded1

Haloacetic acids (HAA5)

Forms or is added in treatment

Above the limit’s level, no violation

150ppb

Highest yearly average, 2022 to 2025

2025: not found

Averaged by year, the highest was 150 ppb, in 2022, about 2.5 times EPA’s legal limit of 60 ppb. In 2025, the latest year on file, it wasn’t found in its one sample. EPA judges this limit on running averages at each sampling point, and recorded no violation for haloacetic acids (HAA5) at this utility since 2020. Results like these with no violation often include water sampled before treatment or blending; the utility’s annual report says what reaches the tap. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 44 ppb, in 2014.

What handles it

No certification claim covers this compound yet.

Above the health goal3

Arsenic

Comes from the source

Above the health goal

9.1ppb

Highest yearly average, 2021 to 2024

2024 average: 5.2 ppb

Averaged by year, the highest was 9.1 ppb, in 2021: below EPA’s legal limit of 10 ppb, but above its health goal of zero. Its highest single sample was 11 ppb. In 2024, the latest year on file, its two samples averaged 5.2 ppb. EPA recorded no violation for arsenic at this utility since 2020. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 6.7 ppb, in 2017.

What handles it

  • NSF/ANSI 58 look for “Arsenic (Pentavalent)<=50 ppb Reduction”
  • NSF/ANSI 53 look for “Arsenic (Pentavalent)<=50 ppb Reduction”

Uranium

Comes from the source

Above the health goal

27ppb

Highest yearly average, 2020 to 2026

2026 average: 25 ppb

Averaged by year, the highest was 27 ppb, in 2023: below EPA’s legal limit of 30 ppb, but above its health goal of zero. In 2026, the latest year on file, its two samples averaged 25 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 31 ppb, in 2013, and EPA recorded violations in 2012 and 2013.

What handles it

Lead

Comes from pipes, often your own

Above the health goal

1.2ppb

90th percentile, 2026 to 2028

In the latest period, 9 in 10 homes sampled were at or below 1.2 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

Below EPA’s limits3

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

58ppb

Highest yearly average, 2022 to 2025

2025, one sample: 46 ppb

Averaged by year, the highest was 58 ppb, in 2022, below EPA’s legal limit of 80 ppb. In 2025, the latest year on file, its one sample was 46 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 2.5 ppb, in 2015.

What handles it

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

Nitrate

Comes from the source

Below EPA’s limits

1.5ppm

Highest sample; found in 12 of 16

2025 average: 0.96 ppm

The highest sample, in 2024, was 1.5 ppm, below EPA’s legal limit of 10 ppm. In 2025, the latest year on file, its two samples averaged 0.96 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 1.9 ppm, in 2013.

What handles it

  • NSF/ANSI 58 look for “Nitrate/Nitrite Reduction”
  • NSF/ANSI 53 look for “Nitrate/Nitrite (30 ppm challenge)”

Fluoride

Forms or is added in treatment

Below EPA’s limits

0.18ppm

Highest yearly average, 2021 to 2024

2024: not found

Averaged by year, the highest was 0.18 ppm, in 2021, below EPA’s legal limit of 4.0 ppm. Its highest single sample was 0.19 ppm. In 2024, the latest year on file, it wasn’t found in any of its two samples. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 0.17 ppm, in 2015.

What handles it

One compound tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Chromium (total)

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: Arsenic (Pentavalent)<=50 ppb Reduction, Lead Reduction

    For: Arsenic, Lead

    Other certifiers’ wording: Arsenic (III) (50 ppb influent level)

  • NSF/ANSI 58

    Claims: Arsenic (Pentavalent)<=50 ppb Reduction, Uranium, Lead Reduction

    For: Arsenic, Uranium, Lead

    Other certifiers’ wording: Arsenic (Pentavalent)<=300 ppb Reduction; Arsenic (V) (300 ppb influent level)

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 reverse osmosis systems, ranked

The best water filters for lead, ranked

Hardness

Very hard, typically 563 mg/L (32.9 grains per gallon), across 2 sampling points, 2015 to 2024.

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 32.9 grains per gallon, salt includedSoftener or salt-free conditioner?Kansas water hardness, utility by utility

Violations since 2016

No health-based violations on file with EPA since 2016. There are 9 monitoring or reporting violations: a sample missed, late or not reported.

What this report can’t tell you

  • Everything else. Haloacetic acids (HAA5), arsenic, uranium, total trihalomethanes (TTHM), nitrate, fluoride and chromium (total) results here are Kansas’s own from 2020 on, with EPA’s national file for 2012 to 2019. City of Timken’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. 11, 2020 to Feb. 18, 2026.

Testing your own tap

City of Timken’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 Timken serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Servi-Tech, Inc

    Dodge City, KS · about 64 miles

    Certified for bacteria

    (620) 227-7123

All 47 certified labs for Kansas

Sources

PWSID KS2016504. Rebuilt from EPA data on Oct. 18, 2026.

Also in Rush County

All Kansas utilities

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