Skip to content
TapBuff
ZIP

Swan Ridge HOA

What EPA’s and Montana’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
28 people
Connections
11
Water source
Groundwater
Based in
Kalispell, MT
County
Flathead
Owner
Private

The short answer

1 result is above EPA’s legal limit, and 2 more are above the health goal. The worst: Nitrate, above the legal limit. 1 health-based violation since 2016.

What handles it

What was found

Lead and copper: EPA SDWIS monitoring periods ending 2012 to 2024.

Nitrate, uranium, fluoride, chromium (total), arsenic and total trihalomethanes (TTHM): Montana’s own results, samples taken from Feb. 14, 2022 to Sept. 17, 2025, with EPA’s 2012 to 2019 file for earlier years.

Above the legal limit1

Nitrate

Comes from the source

Above the legal limit

7.0ppm

Highest sample; found in 2 of 2

2025, one sample: 2.0 ppm

The highest sample, in 2022, was 7.0 ppm, below EPA’s legal limit of 10 ppm. In 2025, the latest year on file, its one sample was 2.0 ppm. EPA judges this limit at each sampling point, and recorded a violation for nitrate at this utility in 2026. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 10.4 ppm, in 2012, and EPA recorded a violation in 2012.

What handles it

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

Above the health goal2

Uranium

Comes from the source

Above the health goal

8.1ppb

Highest yearly average, 2022

Averaged by year, the highest was 8.1 ppb, in 2022: below EPA’s legal limit of 30 ppb, but above its health goal of zero. That is the only year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 2.5 ppb, in 2012.

What handles it

Lead

Comes from pipes, often your own

Above the health goal

1.0ppb

90th percentile, 2022 to 2024

In the latest period, 9 in 10 homes sampled were at or below 1.0 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

Fluoride

Forms or is added in treatment

Below EPA’s limits

0.16ppm

Highest yearly average, 2022 to 2025

2025, one sample: 0.09 ppm

Averaged by year, the highest was 0.16 ppm, in 2022, below EPA’s legal limit of 4.0 ppm. In 2025, the latest year on file, its one sample was 0.09 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 0.16 ppm, in 2012.

What handles it

Chromium (total)

Comes from the source

Below EPA’s limits

1.0ppb

Highest yearly average, 2022 to 2025

2025: not found

Averaged by year, the highest was 1.0 ppb, in 2022, below EPA’s legal limit of 100 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 1.0 ppb, in 2019.

What handles it

2 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Arsenic
  • Total trihalomethanes (TTHM)

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: Nitrate/Nitrite (30 ppm challenge), Lead Reduction

    For: Nitrate, Lead

  • NSF/ANSI 58

    Claims: Nitrate/Nitrite Reduction, Uranium, Lead Reduction

    For: Nitrate, Uranium, Lead

    Other certifiers’ wording: Nitrate

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

Violations since 2016

Contaminant or ruleTypePeriodMeasuredStatus
Nitrate-NitriteA 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, 202610.2 MG/LArchived
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 2 monitoring or reporting violations not shown.

What this report can’t tell you

  • Everything else. Nitrate, uranium, fluoride, chromium (total), arsenic and total trihalomethanes (TTHM) results here are Montana’s own from 2022 on, with EPA’s national file for 2012 to 2019. Swan Ridge HOA’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; Montana’s results run from Feb. 14, 2022 to Sept. 17, 2025.

Testing your own tap

Swan Ridge HOA’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 Montana certifies.

No lab Montana certifies is within 75 miles of the area Swan Ridge HOA serves on the state’s list. Some take samples by mail; the state’s page lists them all.

Montana State Environmental Laboratory: Private well testing packages for bacteria, metals, nutrients, anions, organic chemicals and more, open to the public. Samples can be mailed, sent by the lab's free courier, or dropped off at the lab. Environmental Laboratory, Montana Department of Public Health and Human Services.

All 36 certified labs for Montana

Sources

PWSID MT0004770. Rebuilt from EPA data on Oct. 18, 2026.

Also in Flathead County

All Montana utilities

What to do next