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Peoples Creek Water System

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
76 people
Connections
28
Water source
Groundwater
Based in
Monroe, WA
County
Snohomish
Owner
Private
The ZIP code it serves

98272

The short answer

1 result is above the limit’s level with no violation recorded, and 2 more are above the health goal. The worst: Total trihalomethanes (TTHM), 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 2007 to 2023.

Total trihalomethanes (TTHM), haloacetic acids (HAA5) and nitrate: Washington’s own results, samples taken from Aug. 13, 2020 to Sept. 28, 2026, with EPA’s 2012 to 2019 file for earlier years.

Arsenic, fluoride and chromium (total): EPA’s compliance monitoring file, samples taken from June 5, 2012 to Nov. 5, 2018. Newer results are in the utility’s annual water quality report.

Above the limit’s level, no violation recorded1

Total trihalomethanes (TTHM)

Forms or is added in treatment

Above the limit’s level, no violation

91.2ppb

Highest yearly average, 2020 to 2026

2026 average: 21.8 ppb

Averaged by year, the highest was 91.2 ppb, in 2022, above EPA’s legal limit of 80 ppb. Its highest single sample was 95.4 ppb. In 2026, the latest year on file, its two samples averaged 21.8 ppb. EPA judges this limit on running averages at each sampling point, and recorded no violation for total trihalomethanes (TTHM) 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 49.6 ppb, in 2012.

What handles it

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

Above the health goal2

Lead

Comes from pipes, often your own

Above the health goal

2.1ppb

90th percentile, 2021 to 2023

In the latest period, 9 in 10 homes sampled were at or below 2.1 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

Arsenic

Comes from the source

Above the health goal

1.0ppb

Highest yearly average, 2012 to 2018

Averaged by year, the highest was 1.0 ppb, in 2018: below EPA’s legal limit of 10 ppb, but above its health goal of zero. Its highest single sample was 2.0 ppb. That was also the latest year on file.

What handles it

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

Below EPA’s limits4

Haloacetic acids (HAA5)

Forms or is added in treatment

Below EPA’s limits

41.6ppb

Highest yearly average, 2020 to 2026

2026, one sample: 12.2 ppb

Averaged by year, the highest was 41.6 ppb, in 2024, below EPA’s legal limit of 60 ppb. Its highest single sample was 82.4 ppb. In 2026, the latest year on file, its one sample was 12.2 ppb. EPA recorded no violation for haloacetic acids (HAA5) at this utility since 2020. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 4.1 ppb, in 2013.

What handles it

No certification claim covers this compound yet.

Fluoride

Forms or is added in treatment

Below EPA’s limits

0.27ppm

Highest yearly average, 2012 to 2018

2018 average: 0.26 ppm

Averaged by year, the highest was 0.27 ppm, in 2012, below EPA’s legal limit of 4.0 ppm. Its highest single sample was 0.52 ppm. In 2018, the latest year on file, its two samples averaged 0.26 ppm.

What handles it

Nitrate

Comes from the source

Below EPA’s limits

0.44ppm

Highest sample; found in 6 of 9

2025: not found

The highest sample, in 2024, was 0.44 ppm, below EPA’s legal limit of 10 ppm. In 2025, 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 sample of 2.2 ppm, in 2015.

What handles it

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

Chromium (total)

Comes from the source

Below EPA’s limits

0.5ppb

Highest yearly average, 2012 to 2018

Averaged by year, the highest was 0.5 ppb, in 2018, below EPA’s legal limit of 100 ppb. Its highest single sample was 1.0 ppb. That was also the latest year on file.

What handles it

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, Arsenic (Pentavalent)<=50 ppb Reduction

    For: Total trihalomethanes (TTHM), Lead, Arsenic

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

  • NSF/ANSI 58

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

    For: Total trihalomethanes (TTHM), Lead, Arsenic

    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 water filters for lead, ranked

The best reverse osmosis systems, ranked

Violations since 2016

No health-based violations on file with EPA since 2016. There are 8 monitoring or reporting violations: a sample missed, late or not reported.

What this report can’t tell you

  • Everything else. Total trihalomethanes (TTHM), haloacetic acids (HAA5) and nitrate results here are Washington’s own from 2020 on, with EPA’s national file for 2012 to 2019. Arsenic, fluoride and chromium (total) come from EPA’s file alone, which ends in 2019. Peoples Creek Water System’s own annual report, which it must send you every year, has newer results for those and 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 Aug. 13, 2020 to Sept. 28, 2026; EPA’s compliance samples are from June 5, 2012 to Nov. 5, 2018.

Testing your own tap

Peoples Creek Water System’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.

The 3 labs Washington certifies closest to the area Peoples Creek Water System serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Everett Environmental Laboratory

    Everett, WA · about 15 miles

    Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics

    (425) 257-8230

  • OnSite Environmental, Inc.

    Redmond, WA · about 16 miles

    Certified for lead and copper, metals, minerals and other inorganics

    (425) 883-3881

  • Precision Analytical Laboratories, LLC

    Everett, WA · about 18 miles

    Certified for lead and copper, metals, minerals and other inorganics

    (425) 740-4597

All 84 certified labs for Washington

Sources

PWSID WA5301916. Rebuilt from EPA data on Oct. 18, 2026.

Towns it serves

Also in Snohomish County

All Washington utilities

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