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T - 11 Farmworker Housing

What EPA’s and Washington’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
99 people
Connections
9
Water source
Groundwater
Based in
Wenatchee, WA
County
Grant
Owner
Private
Hardness
Moderately hard

The short answer

1 result is above EPA’s legal limit, and 1 more is above the health goal. The worst: Arsenic, above the legal limit. 1 health-based violation since 2016.

What handles it

What was found

Arsenic, uranium, nitrate, fluoride, total trihalomethanes (TTHM), chromium (total) and haloacetic acids (HAA5): Washington’s own results, samples taken from July 14, 2021 to Aug. 12, 2026, with EPA’s 2012 to 2019 file for earlier years.

Above the legal limit1

Arsenic

Comes from the source

Above the legal limit

10.8ppb

Highest yearly average, 2021 to 2026

2026 average: 9.2 ppb

Averaged by year, the highest was 10.8 ppb, in 2025, above EPA’s legal limit of 10 ppb. Its highest single sample was 11.4 ppb. In 2026, the latest year on file, its three samples averaged 9.2 ppb. EPA recorded a violation for arsenic at this utility in 2026. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 7.7 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”

Above the health goal1

Uranium

Comes from the source

Above the health goal

1.4ppb

Highest yearly average, 2024 to 2025

2025, one sample: 1.0 ppb

Averaged by year, the highest was 1.4 ppb, in 2024: below EPA’s legal limit of 30 ppb, but above its health goal of zero. In 2025, the latest year on file, its one sample was 1.0 ppb.

What handles it

Below EPA’s limits3

Nitrate

Comes from the source

Below EPA’s limits

3.8ppm

One sample

2021, one sample: 3.8 ppm

The highest sample, in 2021, was 3.8 ppm, below EPA’s legal limit of 10 ppm. That is the only year on file, and its one sample was 3.8 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 6.0 ppm, in 2018.

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

0.77ppm

Highest yearly average, 2021

Averaged by year, the highest was 0.77 ppm, in 2021, below EPA’s legal limit of 4.0 ppm. That is the only year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 0.98 ppm, in 2017.

What handles it

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

0.61ppb

Highest yearly average, 2021 to 2024

Averaged by year, the highest was 0.61 ppb, in 2024, below EPA’s legal limit of 80 ppb. That was also the latest year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 3.7 ppb, in 2018.

What handles it

  • NSF/ANSI 53 look for “Trihalomethanes (TTHM) Reduction”
  • NSF/ANSI 58 look for “Trihalomethanes (TTHM) Reduction”
3 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Chromium (total)
  • Haloacetic acids (HAA5)
  • Lead

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

    Claim: Arsenic (Pentavalent)<=50 ppb Reduction

    For: Arsenic

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

  • NSF/ANSI 58

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

    For: Arsenic, Uranium

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

At the tap, or for the whole house?

These come with the water itself, so a whole-house system certified for the same claims treats every tap and shower. A filter at the tap treats drinking water for much less. 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

Hardness

Moderately hard, 110 mg/L (6.4 grains per gallon), at its one sampling point, in 2021.

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 6.4 grains per gallon, salt includedSoftener or salt-free conditioner?Washington water hardness, utility by utility

Violations since 2016

Contaminant or ruleTypePeriodMeasuredStatus
ArsenicA sample was above the legal limit, for a contaminant judged one sample at a time.EPA: Maximum Contaminant Level Violation, Single SampleJan. 1, 2026 to March 31, 20260.011 MG/LArchived
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 1 monitoring or reporting violation not shown.

What this report can’t tell you

  • Everything else. Arsenic, uranium, nitrate, fluoride, total trihalomethanes (TTHM), chromium (total) and haloacetic acids (HAA5) results here are Washington’s own from 2021 on, with EPA’s national file for 2012 to 2019. T - 11 Farmworker Housing’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; Washington’s results run from July 14, 2021 to Aug. 12, 2026.

Testing your own tap

T - 11 Farmworker Housing’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 Washington certifies.

No lab Washington certifies is within 75 miles of the area T - 11 Farmworker Housing serves on the state’s list. Some take samples by mail; the state’s page lists them all.

All 84 certified labs for Washington

Sources

PWSID WA53AC293. Rebuilt from EPA data on Oct. 18, 2026.

Also in Grant County

All Washington utilities

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