Water system

Hartland Colony

C
Montana EPA ID MT0004072 73 people Groundwater

What this means for you

Is it safe to drink right now?
EPA records show 1 recent health-based violation for Hartland Colony that is not marked resolved. Check your utility’s website or bill insert for any boil-water or do-not-drink notice and follow it.
Should I use a filter?
Yes, we recommend considering one. Unresolved health-based issues make a home filter a reasonable backup.
What kind of filter?
See matched standards and product picks.

This is general information from public EPA data, not medical advice. Lead often comes from a home’s own pipes, so only a test of your tap can tell your exposure. If you are pregnant, caring for an infant, or have a weakened immune system, ask your doctor or health department.

Summary: 1 health-based violation in the last 5 years; 36 monitoring/reporting violations; 1 not yet resolved; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2024).
EPA data snapshot 2026Q3. Grade is TapWaterZip's own score — see methods.

PFAS (“forever chemicals”), EPA UCMR 5

No UCMR 5 results on file (mostly smaller systems weren’t required to test).

Lead and copper

Lead 90th percentile0 ppb2024-12-31
Current action level15 ppbLCRI lowers to 10 ppb on Nov 1, 2027

Violations (last 5 years)

BeganTypeContaminant / ruleStatus
2026-07-01Contaminant above legal limitTTHMUnaddressed
2023-01-01Missed or late testing/reportingHeptachlorResolved
2023-01-01Missed or late testing/reportingAtrazineResolved
2023-01-01Missed or late testing/reportingCadmiumResolved
2023-01-01Missed or late testing/reportingSeleniumResolved
2023-01-01Missed or late testing/reportingDi(2-ethylhexyl) adipateResolved
2023-01-01Missed or late testing/reportingMethoxychlorResolved
2023-01-01Missed or late testing/reporting2,4,5-TPResolved
2023-01-01Missed or late testing/reportingOXAMYLResolved
2023-01-01Missed or late testing/reportingBeryllium, TotalResolved
2023-01-01Missed or late testing/reportingHexachlorocyclopentadieneResolved
2023-01-01Missed or late testing/reporting2,4-DResolved
2023-01-01Missed or late testing/reportingChlordaneResolved
2023-01-01Missed or late testing/reportingToxapheneResolved
2023-01-01Missed or late testing/reportingNickelResolved
2023-01-01Missed or late testing/reportingCarbofuranResolved
2023-01-01Missed or late testing/reportingBHC-GAMMAResolved
2023-01-01Missed or late testing/reportingBenzo(a)pyreneResolved
2023-01-01Missed or late testing/reportingDinosebResolved
2023-01-01Missed or late testing/reportingHeptachlor epoxideResolved
2023-01-01Missed or late testing/reportingHEXACHLOROBENZENEResolved
2023-01-01Missed or late testing/reportingDi(2-ethylhexyl) phthalateResolved
2023-01-01Missed or late testing/reportingFluorideResolved
2023-01-01Missed or late testing/reportingAntimony, TotalResolved
2023-01-01Missed or late testing/reportingo-DichlorobenzeneResolved

Filters matched to this water

FILTER PICKS

Look for filters certified (NSF, IAPMO or WQA) to these standards for the specific contaminant. Buttons open the maker’s page or an Amazon search; use “Check NSF listing” to verify a model’s claims. No affiliate links yet — grades are never sold.

Total Trihalomethanes (TTHM)

NSF/ANSI 53 (VOC claim)
Carbon block undersink (VOC claim) ~$80–150
Choose a filter whose NSF/ANSI 53 certificate lists VOCs / TTHM.
Search on Amazon →
Check NSF listing · Not an affiliate link · disclosure

Chlorine/chloramine taste

NSF/ANSI 42
Aquasana Clean Water Pitcher ~$35
Pitcher for chlorine taste/odor; check the NSF/ANSI 42 listing for the exact model.
Search on Amazon →
Check NSF listing · Not an affiliate link · disclosure
Brita Elite Filter ~$20–40
Common faucet/pitcher option; confirm the 42 claim on the box.
View on Brita →
Check NSF listing · Not an affiliate link · disclosure

Annual water quality report

Utilities must publish a Consumer Confidence Report every year by July 1. Find it on the utility’s website or ask them directly; EPA explains how.

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