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WaterVerge

Water quality report · updated Jul 2026

Is Trapper Creek, AK Tap Water Safe to Drink?

Graded A-, with 1 unresolved violation on record. See what was cited — and what it means for your tap. What to do ↓

0 contaminants over a legal limit
0.0 ppb lead, 90th percentile · low
1 unresolved violation
500 people served by 1 water system

PWSID AK2220495 · moderate data confidence · private utility

Reviewed by WaterVerge Editorial Team · Last updated July 2026
A 89 / 100

#3 of 73Alaska cities
How we grade →

01The verdict: is Trapper Creek water safe?

Trapper Creek's tap water meets most EPA standards but has areas that warrant attention. With a grade of A- (89/100), some contaminant levels or compliance issues suggest that residents may benefit from additional filtration. The city's 1 water system serves approximately 500 residents using groundwater (wells).

The concern

1 unresolved violation on record

EPA records show an open compliance item for this system. Most are administrative, but unresolved items are worth watching.

See what was cited ↓
The good news

Lead is well under the limit

90th-percentile lead is 0.0 ppb — beneath the 15 ppb federal action level and under the 5 ppb watch threshold.

See the trend ↓
Keep watching

1 violation in the last five years

Recent compliance history is the best predictor of future problems — the year-by-year record is below.

See the record ↓

Trapper Creek's drinking water received a grade of A- (89 out of 100), indicating good water quality. The city's 1 water system serves approximately 500 residents using groundwater.

Lead levels were measured at 0.0 ppb (90th percentile), well within EPA limits. This system has not yet been tested for PFAS under the EPA UCMR 5 program. The system has 2 violations on record, including 0 health-based violations. 1 remains unresolved.

Trapper Creek ranks #3 out of 73 cities in Alaska for water quality, placing it one of the best in the state. Trapper Creek relies on groundwater, which is generally less vulnerable to surface contamination but can be affected by naturally occurring minerals like arsenic and nitrate, as well as agricultural and industrial runoff. As a small community water system, Trapper Creek may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.

How the 89/100 breaks down Methodology →
ViolationsHistorical violation record including health-based and monitoring violations.
44 / 45A
Lead & CopperLead at 0.0 ppb (90th percentile).
20 / 20A
ContaminantsPFAS + legacy contaminant analysis.
17 / 20B
ComplianceMonitoring and reporting compliance with EPA regulations.
3 / 10F
Source RiskWater source: Groundwater.
5 / 5A

02What's in Trapper Creek's water

Every contaminant flagged in Trapper Creek, on one shared scale: distance to its own legal limit. The red line is the limit — anything past it is out of compliance, and the closer a bar gets, the less headroom the system has.

1 detection · sorted by % of legal limit
Over the limit Elevated — watch Within limits
0 50% LEGAL LIMIT 150%
1 contaminant tested under EPA SDWIS, LCR and UCMR programs · 1 detected · not yet tested for PFAS under UCMR 5

Full contaminants report

Contaminant Detected Level EPA Limit Unit Category Status
Lead (90th percentile) 0.0 15 ppb Inorganic Safe
Data source: EPA SDWIS, UCMR 5, local utility CCR.

03Trapper Creek's ten-year track record

Each box is one year. A green check means no EPA violations; a numbered badge counts that year's violations — red if any were health-based, amber if they were monitoring or paperwork issues. The system has 2 violations on record, including 0 health-based violations. 1 remains unresolved.

9 of the last ten years were clean. The numbered years had EPA violations — red when any were health-based, amber when they were paperwork or missed-testing issues.

1 monitoring & paperwork
UpdateWater quality data updatedLatest EPA compliance and testing data incorporated into Trapper Creek's water quality assessment. Grade: A- (89/100).
Violation1 drinking water violation recordedContaminants: Nickel.Resolved
Lead, 90th percentileppb · lower is better
05101520EPA action level · 15 ppb2021 — 0.37 ppb2022 — 0 ppb2023 — 0 ppb2024 — 0 ppb0.3702021202220232024

Down 0.37 ppb since 2021. Latest reading: 0 ppb (2024) — 0% of the action level. Sampled at higher-risk homes (90th percentile).

04Where Trapper Creek's water comes from

Trapper Creek's drinking water is drawn from underground aquifers through wells.

Source

Groundwater

Underground aquifers reached by wells — naturally filtered, but can carry minerals like arsenic and nitrate.

Treatment

Local treatment

Groundwater generally needs less treatment — typically disinfection and, where needed, mineral removal.

Distribution

1 system

1 water system, operated under private ownership.

Delivery

500 people

Residents served across Trapper Creek's service area.

Groundwater is naturally filtered through rock and soil layers, generally requiring less treatment than surface water. However, it can contain naturally occurring contaminants like arsenic, radon, and minerals. Agricultural activity, septic systems, and industrial operations near well fields can introduce nitrates, pesticides, and volatile organic compounds. The system is operated by private ownership and serves approximately 500 people through 1 water system.

System namePWSIDPopulationSource
TRAPPER CREEK WATERING POINT AK2220495 500 Groundwater

05How Trapper Creek compares

Scores for nearby Alaska cities on one line, with the average marked.

Trapper Creek (this city)
89 · A-
Juneau
65.4 · C+
Wasilla
42.5 · F
Anchorage
38.5 · F
Fairbanks
38.4 · F

dashed line = Alaska average (61/100)

Trapper Creek scores 89/100above the Alaska average of 61/100. It outscores 9 of 10 nearby cities. Full Alaska rankings →

Matanuska-Susitna Borough water quality rankings
Compare all cities in the county — grades, violations, and contaminant data side by side.

06What to do at home

Steps matched to what testing actually found in Trapper Creek's water — not generic advice.

Extra protection

A basic carbon filter still helps

Trapper Creek's water meets federal standards, but a simple carbon filter improves taste and adds a margin of safety against short-term issues.

Compare tested filters →
Know your report

Read your utility's annual report

Every utility must publish a yearly Consumer Confidence Report with its own testing results. It pairs well with the independent data on this page.

How to read a CCR →
Stay informed

Watch for Trapper Creek alerts

We refresh EPA data monthly and surface new violations, advisories, and boil-water notices for your county on this page.

All water alerts →

Frequently asked questions

Is Trapper Creek, AK tap water safe to drink?

Trapper Creek's water quality earned a grade of A- (89/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #3 out of 73 cities tested in Alaska.

What contaminants are in Trapper Creek's water?

Lead was measured at 0.0 ppb (90th percentile). 2 violations are on record.

How is Trapper Creek's water quality grade calculated?

The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.

Do I need a water filter in Trapper Creek?

Based on current data, basic filtration should suffice for additional peace of mind.

Where does Trapper Creek's water come from?

Trapper Creek's water is sourced from Groundwater. The city has 1 water system serving approximately 500 residents.

Is Trapper Creek's groundwater at risk of contamination?

Trapper Creek uses groundwater, which can be affected by naturally occurring contaminants like arsenic, radon, and nitrate, as well as agricultural runoff and industrial activity. The system has 2 violations on record that may relate to groundwater quality. Groundwater systems are generally less susceptible to surface contamination but should be monitored for emerging contaminants like PFAS.

How does Trapper Creek's water compare to other cities?

Trapper Creek ranks #3 out of 73 cities in Alaska (better than 96% of state cities) and #3126 out of 15382 cities nationally (80th percentile). The grade of A- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.

Does Trapper Creek's small water system affect quality?

Trapper Creek's system serves approximately 500 residents. Small community water systems (under 3,300 people) may have fewer financial resources for infrastructure upgrades and advanced treatment technologies. However, they are held to the same EPA drinking water standards as larger systems. This system has 2 violations on record.

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About Trapper Creek, AK: Trapper Creek is a census-designated place (CDP) in Matanuska-Susitna Borough, Alaska, United States. It is part of the Anchorage Metropolitan Area and is known as the southern gateway to Denali State Park. According to the 2020 census the population of Trapper Creek was 499. Median household income $51,071 · median home value $191,604 · median age 63.4 · 97.2% homeowners · 23.9% college educated. Wikipedia → Service area: 1 ZIP code across Matanuska-Susitna Borough.
Show ZIP codes 99683
Sources: EPA SDWIS & ECHO · UCMR 3–5 · Lead & Copper Rule samples · EPA TRI · U.S. Drought Monitor · FEMA declarations. Data last updated Jul 2026. Analysis by the WaterVerge Editorial Team · methodology.