Toxin Scout

Air quality and drinking water coverage in Middleton, ID

Review government records associated with Middleton, Idaho.

Toxin Scout is in beta. Please verify important findings with the linked sources.

What the Middleton records show

Water quality and PFAS
1 candidate water system shown.Source date: Violations as of Q1 2026
Air quality and emissions
3 monitoring records shown. Observation year: 2025.Source date: AQS data as of 2026
Land and cleanup records
No Superfund records returned in this report; No brownfield records returned in this report.
Infrastructure and incidents
1 pipeline incident record shown; No RMP facility records returned in this report (earlier stored inventory, current location coverage unverified).Source date: PHMSA data as of Q1 2026

Water quality in Middleton

Drinking water quality

Check your water bill for your utility name and confirm the reporting year. See EPA’s guide to finding your annual water quality report.

Drinking Water Compliance

Public water-system records for Middleton, ID from EPA SDWIS.

Middleton City of

Active monitoring or reporting issue detected in EPA SDWIS.

Reviewed: active/open records as of Q1 2026

City listed in EPA records · Serves 13,190 people

Data from EPA SDWIS

PFAS (Forever Chemicals)No PFAS records shown for this report

Reviewed: source records as of Q1 2026

EPA UCMR5 — No PFAS detection records shown for these water systems

Open data source: EPA UCMR5

DoD PFAS — No investigation records shown for this report

Open data source: DoD PFAS
Rivers, lakes and groundwater

Impaired Water Bodies

1

EPA ATTAINS records identify assessed water bodies that do not meet water-quality standards for designated uses.

Mill Slough-Boise River

Not Supporting10.0% of assessed waters impaired

Reported: Nov 2026

Open data source: EPA ATTAINS

Health-relevant causes: Pathogens, Pesticides

Affected uses: Ecological, Recreation

Data from EPA ATTAINS

Discharge

Discharge Permits (NPDES)

1

NPDES permits regulate pollutant discharges into U.S. waterways. Facilities must report compliance quarterly.

Open data source: EPA ECHO

Violation records

263 Midland Pit

Last inspected: Dec 2025

Open data source: EPA ECHO
Status: Violation Identified · 5 of 12 quarters with noncompliance

Data from EPA ECHO

To investigate water contamination, check the sampling locations, dates and results below. For tap water records, see Drinking water quality above.

Water Quality MonitoringThis report includes 3 monitoring station records from the Water Quality Portal. It identified no recent results above an applicable comparison value. Some stations may lack recent or comparable results.

Reviewed: source records as of 2026

Open data source: Water Quality Portal

Air quality and emissions in Middleton

Review historical EPA air pollution records, including monitoring and facility emissions where available. For current conditions, check local air quality on AirNow.

Air Quality Assessment

EPA AirToxScreen — Estimated Cancer Risk

1
40estimated additional cancer cases per million people

Canyon County

Assessment year: 2020

Open data source: EPA AirToxScreen
Lower risk95th percentile nationallyHigher risk

According to EPA, a cancer risk of 40-in-1-million means that for every 1 million people continuously exposed to these air toxics over a 70-year lifetime, an estimated 40 may develop cancer from that exposure. This is in addition to cancer risk from all other causes.

Top modeled source groups

Residential wood burningWildfires & prescribed burns

Data from EPA AirToxScreen

Nonattainment Status

No EPA nonattainment designation records shown for this report.

Air Quality Monitoring (AQS)

EPA annual monitor summaries describe past measurements. For current air quality, see AirNow.

Ada County Fairgrounds, Across Intersection of Alworth and Lorimar — Boise, Idaho

Open data source: EPA AQS
PM10

Annual mean: 17.1 Micrograms/cubic meter (25 C)

Observation year: 2025

Boise - White Pine Elementary — Boise, Idaho

Open data source: EPA AQS
Ozone

Annual mean: 0.051 Parts per million

Observation year: 2025

Meridian - St. Luke's

Open data source: EPA AQS
CO

Annual mean: 0.1 Parts per million

Observation year: 2025

Data from EPA AQS

Facilities & Emissions
Air Quality Violations (CAA)No matching Clean Air Act-regulated facility records surfaced for this city report.

Reviewed: source records as of Q4 2025

Open data source: Search EPA ECHO

Reported Air Emissions (TRI)

3

TRI releases are self-reported annual totals (calendar year 2024). Hover fugitive or stack for definitions.

Manganese
10.00 lbs
Chromium
2.00 lbs
Total air: 12.00 lbsFugitive: 12.00 lbs
Lead
0.01 lbs
Total air: 0.01 lbsFugitive: 0.01 lbs

Land cleanup and hazardous waste records in Middleton

Contaminated Sites
Superfund SitesNo matching Superfund site records surfaced for this report.

Reviewed: source query run Nov 2026

Open data source: Search EPA ECHO
Brownfield Sites (EPA ACRES)No matching brownfield site records surfaced for this city report in the EPA ACRES database.

Reviewed: source query run Nov 2026

Open data source: Search EPA ECHO
Waste Facilities
Hazardous Waste — RCRA FacilitiesNo RCRA hazardous-waste handler records surfaced in the reviewed 5-mile city-center search area.
Open data source: Search EPA ECHO

Underground Storage Tanks

2

Release reports

C & R American

Reported: Dec 2021

Open data source: EPA UST Finder
Status: Closed · Release status: Open
Tank: ClosedLeak Status: Open
6 tanks·Closed UST(s)
Near Private WellsWellhead Protection Area100-yr Floodplain
Gem Stop #016

Reported: Dec 2021

Open data source: EPA UST Finder
Status: 2 open tanks · Release status: Open
2 tanks·Open UST(s)
Near Private Wells

Data from EPA UST Finder

Onsite Waste Disposal (TRI Land Releases)

1

Toxics Release Inventory data — chemicals disposed on-site at reporting facilities.

Nitrate compounds (water dissociable; reportable only when in aqueous solution): 1,811 lbs disposed on-site (2024)
Lead: 16.07 lbs disposed on-site (2024)
Military & Industrial
Formerly Used Defense SitesNo USACE FUDS property records matched this report’s search area.
Open data source: USACE FUDS

MSHA Mine and Extraction Sites

1
Data as of Nov 2026

Sites regulated by the Mine Safety and Health Administration, including mines, sand and gravel operations, and portable crushers. Status and type are from the MSHA Mine Data Retrieval System. Records with active/intermittent status dates older than 5 years are shown as older records rather than current active sites.

More MSHA records matched the search than this preview shows.

Open data source: MSHA

Recently updated active/intermittent sites (1)

Portable Crusher #2
Open data source: MSHA
Status: Active · Surface
MSHA Mine ID 1002051·Commodity: Construction Sand and Gravel·Operator: C Wright Construction Co Inc·Metal/Non-Metal·3 employees·MSHA status date: Sep 2026

Data from MSHA

Hydraulic Fracturing WellsNo hydraulic fracturing well disclosure records surfaced for this city report.
Open data source: FracFocus Search
Radon Context

County radon potential

1
EPA Zone 2Moderate radon potential

Canyon County, ID

EPA Radon Zone Map (June 2024 release)

Open data source: EPA radon zone data

Canyon County is EPA Radon Zone 2 (moderate potential). EPA defines Zone 2 counties as having predicted average indoor screening levels between 2 pCi/L and 4 pCi/L.

Radon levels can vary from home to home, so EPA recommends testing the property to know its indoor level.

Find radon testing in IDZone classification per EPA Map of Radon Zones.

FEMA flood zones and infrastructure in Middleton

FEMA Flood Zones

1

FEMA flood zones describe mapped flood hazards. Look up a specific address with FEMA.

FEMA Flood Zone: AESFHA

Special Flood Hazard Area — 1% annual chance of flooding (100-year floodplain) with base flood elevation.

DFIRM Panel: 16027C
Chemical & Industrial Risk

EPA Risk Management Program Records

Results use an earlier stored RMP inventory. Current EPA ECHO location coverage is unverified.

No EPA ECHO RMP facility records with a usable location matched this city report.

Open data source: Search EPA ECHO
Nuclear Facilities (NRC)No NRC-licensed nuclear facility records surfaced for this city report.
Open data source: NRC Reactor Map

Pipeline Incidents

1

PHMSA tracks incidents involving natural gas and hazardous liquid pipelines. Incidents include leaks, ruptures, and explosions.

Recent Incidents (last 5 years)

NORTHWEST PIPELINE LLC

Incident date: Oct 12, 2023

Open data source: PHMSA Data
Type
Gas Transmission/Gathering
Cause
EXCAVATION DAMAGE
Released
NATURAL GAS

Property damage: $385,000

Data from PHMSA

Community Health

Community Health Indicators

Health outcomes from County Health Rankings. Values shown alongside state and national averages.

Canyon County, IdahoPop. 251,065

County Health Rankings edition: 2024

Premature Death

County
7,017
State
6,827
National
7,972

Poor or Fair Health

County
15.9%
State
13.0%
National
14.2%

Poor Physical Health Days

County
3.8
State
3.3
National
3.3

Poor Mental Health Days

County
4.8
State
4.7
National
4.8

Adult Smoking

County
16.6%
State
13.8%
National
15.0%

Adult Obesity

County
36.5%
State
32.1%
National
34.0%

Air Pollution - Particulate Matter

County
6.9
State
5.2
National
7.3

Drinking water violation indicator

County
Yes
State
N/A
National
N/A

Diabetes Prevalence

County
11.0%
State
8.8%
National
9.6%

Life Expectancy

County
78.0
State
78.4
National
77.6

Environmental questions about Middleton, Idaho

Has PFAS been found in the water in Middleton, Idaho?

This report does not have PFAS sample results for the candidate water systems in Middleton.

Check with the utility that serves your address for its testing results.

EPA water testing results

What do EPA records say about tap water in Middleton, Idaho?

EPA drinking water records on this page list 1 violation for the City of Middleton, including 1 marked active.

Check your water bill to identify the utility serving your address. Ask that utility about current drinking water advisories.

View on EPA SDWIS

What do annual air monitors show near Middleton, Idaho?

Nearby EPA monitoring stations provide annual air quality measurements for Middleton.

The monitoring station at Ada County Fairgrounds, Across Intersection of Alworth and Lorimar, Boise (corporate name Boise City), Idaho recorded an annual average of 17.1 Micrograms/cubic meter (25 C) for particles (PM10) in 2025.

The monitoring station at Boise-White Pine Elementary, Boise (corporate name Boise City), Idaho recorded an annual average of 0.051 Parts per million for ozone in 2025.

The monitoring station at Meridian-St. Luke's recorded an annual average of 0.1 Parts per million for carbon monoxide in 2025.

Download 2025 EPA annual monitor dataCurrent air quality on AirNow

Is there radon in Middleton, Idaho?

The radon data for Middleton covers Canyon County. EPA places this area in Zone 2, with a predicted average indoor radon screening level of 2 to 4 picocuries per liter.

EPA Radon Zones data

Are there Superfund or brownfield sites near Middleton, Idaho?

No Superfund or brownfield sites were returned for this city report.

EPA Superfund recordsEPA brownfield records

What is the life expectancy in Middleton, Idaho?

The county data for Middleton reports a life expectancy of 78.0 years in Canyon County, Idaho.

The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.

Canyon County health data

What does the data say about premature deaths in Middleton, Idaho?

The county data for Middleton reports 7,017 years of life lost to deaths before age 75 per 100,000 residents in Canyon County, Idaho. This measure adds up the years lost to early deaths and adjusts for differences in population age.

The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.

Canyon County health data

Is there air pollution in Middleton, Idaho?

The county data for Middleton lists fine-particle pollution (PM2.5) at 6.9 micrograms per cubic meter in Canyon County, Idaho.

The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.

Canyon County health data

What environmental incidents are recorded near Middleton, Idaho?

Federal pipeline records list an incident involving Northwest Pipeline LLC near Middleton on Oct 12, 2023. The reported release was natural gas.

View PHMSA flagged incident dataset