Skip to content
TapBuff
ZIP

Lewis River Rv Park

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
347 people
Connections
26
Water source
Groundwater
Based in
Woodland, WA
County
Cowlitz
Owner
Private
Hardness
Very hard
The ZIP code it serves

98674

The short answer

1 result is above the health goal. The worst: Lead, above the health goal. No health-based violations on file since 2016.

What handles it

What was found

Lead and copper: EPA SDWIS monitoring periods ending 2003 to 2023.

Total trihalomethanes (TTHM), haloacetic acids (HAA5), arsenic, chromium (total), fluoride and nitrate: Washington’s own results, samples taken from June 8, 2020 to Nov. 20, 2025, with EPA’s 2012 to 2019 file for earlier years.

Above the health goal1

Lead

Comes from pipes, often your own

Above the health goal

2.7ppb

90th percentile, 2021 to 2023

In the latest period, 9 in 10 homes sampled were at or below 2.7 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 limits2

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

9.2ppb

Highest yearly average, 2020 to 2024

2024, one sample: 1.7 ppb

Averaged by year, the highest was 9.2 ppb, in 2021, below EPA’s legal limit of 80 ppb. In 2024, the latest year on file, its one sample was 1.7 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 0.5 ppb, in 2013.

What handles it

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

Haloacetic acids (HAA5)

Forms or is added in treatment

Below EPA’s limits

2.9ppb

Highest yearly average, 2020 to 2024

2024: not found

Averaged by year, the highest was 2.9 ppb, in 2021, below EPA’s legal limit of 60 ppb. In 2024, the latest year on file, it wasn’t found in its one sample.

What handles it

No certification claim covers this compound yet.

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.”

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

Very hard, 255 mg/L (14.9 grains per gallon), at its one sampling point, 2022 to 2023.

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

Violations since 2016

No health-based violations on file with EPA since 2016. There is 1 monitoring or reporting violation: a sample missed, late or not reported.

What this report can’t tell you

  • Everything else. Total trihalomethanes (TTHM), haloacetic acids (HAA5), arsenic, chromium (total), fluoride and nitrate results here are Washington’s own from 2020 on, with EPA’s national file for 2012 to 2019. Lewis River Rv Park’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 June 8, 2020 to Nov. 20, 2025.

Testing your own tap

Lewis River Rv Park’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 Lewis River Rv Park serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • ALS Environmental - Kelso

    Kelso, WA · about 16 miles

    Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, PFAS, radioactivity

    (360) 577-7222

  • BSK Associates - Vancouver

    Vancouver, WA · about 22 miles

    Certified for bacteria, nitrate, minerals and other inorganics

    (360) 750-0055

  • Columbia Laboratories, Inc.

    Portland, OR · about 28 miles

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

    (503) 254-1794

All 84 certified labs for Washington

Sources

PWSID WA5329521. Rebuilt from EPA data on Oct. 18, 2026.

Towns it serves

Also in Cowlitz County

All Washington utilities

What to do next