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Beverly Water District

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
120 people
Connections
82
Water source
Groundwater
Based in
Mattawa, WA
County
Grant
Owner
Local government
Hardness
Varies by source
The ZIP code it serves

99321

The short answer

1 result is above the health goal. The worst: Arsenic, above the health goal. 2 health-based violations since 2016.

What handles it

What was found

Nitrate, total trihalomethanes (TTHM), fluoride and haloacetic acids (HAA5): Washington’s own results, samples taken from Jan. 8, 2020 to Sept. 2, 2026, with EPA’s 2012 to 2019 file for earlier years.

Arsenic and chromium (total): EPA’s compliance monitoring file, samples taken from Nov. 27, 2018 to July 10, 2019. Newer results are in the utility’s annual water quality report.

Above the health goal1

Arsenic

Comes from the source

Above the health goal

9.8ppb

Highest yearly average, 2018 to 2019

Averaged by year, the highest was 9.8 ppb, in 2019: below EPA’s legal limit of 10 ppb, but above its health goal of zero. 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

Nitrate

Comes from the source

Below EPA’s limits

8.4ppm

Highest sample; found in 199 of 202

2026 average: 5.1 ppm

The highest sample, in 2023, was 8.4 ppm, below EPA’s legal limit of 10 ppm. In 2026, the latest year on file, its 27 samples averaged 5.1 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 12.2 ppm, in 2018, and EPA recorded violations in 2015 and 2018.

What handles it

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

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

10.7ppb

Highest yearly average, 2022 to 2025

2025: not found

Averaged by year, the highest was 10.7 ppb, in 2022, below EPA’s legal limit of 80 ppb. In 2025, the latest year on file, it wasn’t found in its one sample. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 14.8 ppb, in 2019.

What handles it

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

Fluoride

Forms or is added in treatment

Below EPA’s limits

0.26ppm

Highest yearly average, 2025

Averaged by year, the highest was 0.26 ppm, in 2025, 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 0.57 ppm, in 2018.

What handles it

Haloacetic acids (HAA5)

Forms or is added in treatment

Below EPA’s limits

2.0ppb

Highest yearly average, 2022 to 2025

2025: not found

Averaged by year, the highest was 2.0 ppb, in 2022, below EPA’s legal limit of 60 ppb. In 2025, the latest year on file, it wasn’t found in its one sample. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 2.9 ppb, in 2019.

What handles it

No certification claim covers this compound yet.

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

    Claim: Arsenic (Pentavalent)<=50 ppb Reduction

    For: Arsenic

    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 to hard depending on the source, 98 to 152 mg/L (5.7 to 8.9 grains per gallon), across 2 sampling points, 2020 to 2025.

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, salt includedSoftener or salt-free conditioner?Washington water hardness, utility by utility

Violations since 2016

Contaminant or ruleTypePeriodMeasuredStatus
NitrateA sample was above the legal limit, for a contaminant judged one sample at a time.EPA: Maximum Contaminant Level Violation, Single SampleJan. 1, 2018 to Dec. 31, 201812.2 MG/LResolved
NitrateA sample was above the legal limit, for a contaminant judged one sample at a time.EPA: Maximum Contaminant Level Violation, Single SampleJan. 1, 2018 to Dec. 31, 201812.2 MG/LResolved
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 23 monitoring or reporting violations not shown.

What this report can’t tell you

  • Everything else. Nitrate, total trihalomethanes (TTHM), fluoride and haloacetic acids (HAA5) results here are Washington’s own from 2020 on, with EPA’s national file for 2012 to 2019. Arsenic and chromium (total) come from EPA’s file alone, which ends in 2019. Beverly Water District’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 Jan. 8, 2020 to Sept. 2, 2026; EPA’s compliance samples are from Nov. 27, 2018 to July 10, 2019.

Testing your own tap

Beverly Water District’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 Beverly Water District serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Ag Health Laboratories, Inc.

    Sunnyside, WA · about 30 miles

    Certified for bacteria, nitrate

    (509) 836-2020

  • Soiltest Farm Consultants, Inc. Laboratory

    Moses Lake, WA · about 34 miles

    Certified for nitrate, minerals and other inorganics

    (509) 765-1622

  • AV Labs, Inc

    Othello, WA · about 35 miles

    Certified for bacteria

    (509) 488-2468

All 84 certified labs for Washington

Sources

PWSID WA5306350. Rebuilt from EPA data on Oct. 18, 2026.

Also in Grant County

All Washington utilities

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