Is Harlowton, MT tap water safe?
The short answer
None of the 4 utilities serving Harlowton has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Montana’s records.
City of Harlowton, which serves the most people here, has 2 results above the health goal. The worst: Lead at 2.0 ppb, above the health goal. Health goals are stricter than legal limits and are not enforced.
A town can be served by more than one utility, and some homes are on private wells. The name on your water bill tells you which is yours, and your ZIP code narrows it down. They are listed by how many people each serves in Harlowton’s ZIP codes, from EPA’s estimates.
- Open report
City of Harlowton
Montana · serves 1,050 people · under 100 in Harlowton
2 results above the health goal. The worst: Lead at 2.0 ppb, above the health goal.
No health-based violations since 2016
- Open report
Cmrwa Musselshell Judith Rural Water Sys
Montana · serves 100 people · lists Harlowton among the places it serves
1 result above the health goal. The worst: Uranium at 0.4 ppb, above the health goal.
No health-based violations since 2016
- Open report
Springwater Colony
Montana · serves 100 people · lists Harlowton among the places it serves
1 result above the health goal. The worst: Lead at 1.0 ppb, above the health goal. Hardness: very hard, 418 mg/L (24.5 grains per gallon).
No health-based violations since 2016
- Open report
Duncan Ranch Colony
Montana · serves 96 people · lists Harlowton among the places it serves
Nothing in its records is above a health goal.
No health-based violations since 2016
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in City of Harlowton’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Brita Tahoe Pitcher with Elite Filter (OB60, OB06)
Pitcher
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 13, 2026
- IAPMO listing:NSF/ANSI 53checked Oct. 13, 2026
Certified for: Lead
Brita Everyday Pitcher with Elite Filter (OB46, OB06)
Pitcher
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 13, 2026
Certified for: Lead
PUR PLUS 11-Cup Pitcher (PPT111W)
Pitcher
- NSF listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
Certified for: Lead
Water testing near Harlowton
The lab Montana certifies closest to Harlowton, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Aqua Tech Laboratory
Lewistown, MT · about 54 miles
Certified for bacteria
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 MontanaZIP codes in Harlowton
Which ZIP codes are in Harlowton: Census 2020 relationship files. Which utilities serve them, and how many people: EPA SDWIS and EPA’s service area map. Each utility’s results: EPA UCMR 5, EPA SDWIS, and EPA’s and the state’s compliance monitoring, as its report lists them. How they are measured: methodology. Certified labs: Montana Department of Public Health and Human Services, Water Laboratory Certification Program, certified laboratories; distances from the Census 2020 ZIP code tabulation area gazetteer.
Near Harlowton
Towns nearby with a page of their own.
What to do next
- Read City of Harlowton’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Filters for LeadRanked by certification and what they cost over five years.The best water filters for lead, ranked
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water