BIG SKY, Montana Tap Water Quality

5,574 people served · 12 water systems

Excellent

BIG SKY, Montana is a small town with 5,574 residents served by a network of 12 public water systems. Water service covers ZIP code 59716.

BIG SKY's drinking water utilities have maintained full EPA compliance over the most recent five-year reporting window — no health-based MCL exceedances have been recorded.

Last updated: 2026-05-18 · Source: EPA SDWIS

Location

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Centered on ZIP-code centroids of water systems serving this city.

ZIP Codes Served

59716

Health-Based Violations (Last 5 Years)

EPA Maximum Contaminant Level exceedances reported by water systems serving BIG SKY. Each entry explains the contaminant, the health risk, and recommended precautions, and links to a full guide.

✅

No health-based violations in the last 5 years.

BIG SKY's water systems have met EPA health-based Maximum Contaminant Level (MCL) requirements throughout the EPA reporting window. This does not mean zero detection of regulated contaminants — it means all measured concentrations remained below their federal action levels.

Water Systems Serving BIG SKY

SPANISH PEAKS MOUNTAIN CLUB

PWSID: MT0004588

40 served

BIG SKY COUNTY WATER AND SEWER DIST 363

PWSID: MT0002385

4,132 served

LAZY J SOUTH SUBDIVISION

PWSID: MT0004432

122 served

GATEWAY VILLAGE SYSTEM 2

PWSID: MT0005027

68 served

GATEWAY VILLAGE SYSTEM 7

PWSID: MT0005032

77 served

GATEWAY VILLAGE SYSTEM 5

PWSID: MT0005030

70 served

GATEWAY VILLAGE SYSTEM 4

PWSID: MT0005029

60 served

GATEWAY VILLAGE SYSTEM 3

PWSID: MT0005028

68 served

ANDESITE RIDGE WATER SYSTEM

PWSID: MT0004468

450 served

LONE VIEW RIDGE WATER SYSTEM

PWSID: MT0004470

37 served

ENCAMPMENT TRAIL

PWSID: MT0004916

100 served

LOWER PIONEER MOUNTAIN WATER SYSTEM

PWSID: MT0004462

350 served

What Can You Do?

✅ Request your utility's annual Consumer Confidence Report (CCR) — required by law.
✅ Use an NSF-certified water filter if violations involve lead, arsenic, or PFAS.
✅ Run cold water for 30 seconds before drinking if you have older plumbing (reduces lead).
✅ Check back monthly — we update data from the EPA every 30 days.

About this data

This overview reflects EPA SDWIS data published as of 2026-05-18. It covers active Community Water Systems (CWS) that remained within federal Maximum Contaminant Levels during the past five-year EPA reporting window. For up-to-the-minute information, request a current Consumer Confidence Report from your utility, or review the EPA's public dashboard.

Frequently Asked Questions

Is BIG SKY, Montana tap water safe to drink?▼

This city's water had no EPA health-based violations in the last 5 years.

How many EPA violations does BIG SKY have?▼

BIG SKY has 0 EPA health-based water violations in the last 5 years across 12 water systems serving 5,574 people.

Should I use a water filter in BIG SKY?▼

Using an NSF-certified water filter is recommended if your area has violations involving lead, arsenic, or PFAS. For other contaminants, consult your local water utility. Check the annual Consumer Confidence Report (CCR) for detailed guidance.

What should I do if there are violations in BIG SKY?▼

Request your water utility's annual Consumer Confidence Report (CCR), which is required by the EPA. Follow the utility's guidance on boil water advisories. Run cold water for 30 seconds before drinking if you have older plumbing. Use an NSF-certified filter if needed based on your water system's violations.