Utah County, Utah has about 747,234 residents (Census 2024 estimate) and 43 community water systems in EPA records. The largest local system is Provo City, serving about 116,288 people from surface water.
Public-record figures, not a test of your tap. Not 100% accurate or guaranteed. Confirm with a water test, your utility or a qualified pro before you buy or act.
Provo City Estimate: untreated local water, not your tap · Low confidence
15.4 gpg (264 mg/L), very hard
Utah County: median of 9,776 results from 850 monitoring sites (streams and wells). Utilities may blend or treat water, so your tap can differ.
Source: Hard Water Map county data, samples through 2021
County estimates: Hard Water Map (hardwatermap.com), CC BY 4.0, derived from the USGS/EPA Water Quality Portal; file generated 2026-07-22. License
Public-record figures, not a test of your tap. Not 100% accurate or guaranteed. Confirm with a water test, your utility or a qualified pro before you buy or act.
For a 3-person home using 57 gallons per person per day and regenerating weekly, you'd remove about 18,434 grains between regenerations. Suggested size: 24,000 grain. This uses a low-confidence county estimate, so confirm with a test first.
Estimate only. Not 100% accurate or guaranteed. Confirm with a water test, your utility or a qualified pro before you buy or act.
The 6 biggest of 43 community water systems on EPA records for this county. Service areas don't follow county lines; your water bill names your provider.
UTAH25006 · serves about 116,288 people · Surface water
Lead 90th percentile: 4.3 ppb (period starting 2023-01-01) Older result. Action level: 15 ppb (drops to 10 ppb on Nov 1, 2027).
UTAH25020 · serves about 98,129 people · Surface water
Lead 90th percentile: 2.2 ppb (period starting 2022-01-01) Older result. Action level: 15 ppb (drops to 10 ppb on Nov 1, 2027).
UTAH25015 · serves about 93,446 people · Surface water
Lead 90th percentile: 3 ppb (period starting 2022-01-01) Older result. Action level: 15 ppb (drops to 10 ppb on Nov 1, 2027).
UTAH25138 · serves about 68,000 people · Surface water
Lead 90th percentile: 1.7 ppb (period starting 2022-01-01) Older result. Action level: 15 ppb (drops to 10 ppb on Nov 1, 2027).
UTAH25142 · serves about 61,266 people · Surface water
Lead 90th percentile: 1.5 ppb (period starting 2022-01-01) Older result. Action level: 15 ppb (drops to 10 ppb on Nov 1, 2027).
UTAH25003 · serves about 47,169 people · Groundwater
Lead 90th percentile: 1 ppb (period starting 2023-01-01) Older result. Action level: 15 ppb (drops to 10 ppb on Nov 1, 2027).
Public-record figures, not a test of your tap. Not 100% accurate or guaranteed. Confirm with a water test, your utility or a qualified pro before you buy or act.
A PFAS detection is not a violation. Federal limits (4 ppt for PFOA and PFOS) apply to running annual averages, with compliance required by 2029. In May 2026 EPA proposed extending the PFOA/PFOS deadline to 2031 and removing other PFAS limits; not final as of 2026-10-21.
These are public records for whole systems. Your home's pipes, fixtures and any private well can change what you drink. A certified lab test or a hardness test strip gives you your own numbers. Then use our PFAS and lead filter selector to see which certifications to look for.
None of the 6 largest systems here have a health-based violation in EPA records since October 2021. Provo City's most recent lead 90th percentile was 4.3 ppb (2023), below the 15 ppb action level. Public records can't guarantee what comes out of your tap, especially with older plumbing, so a home test is the surest check.
There's no published utility figure in our data, but untreated local stream and well samples in Utah County have a median of about 15.4 grains per gallon (264 mg/L, very hard). That's a low-confidence estimate of source water, not your tap, so test before you buy equipment. For a 3-person home at 15.4 gpg, our softener calculator suggests a 24,000 grain unit as a starting point.
None of the 6 sampled systems listed here detected PFAS above EPA's reporting levels in UCMR 5 testing.
Most homes are served by Provo City or one of the other systems listed on this page, but service areas don't follow county lines. Your water bill names your provider, and its annual Consumer Confidence Report has the full test results.
Data as of October 21, 2026. Figures are copied from public records and combined with our own calculations; they can be out of date or wrong. Tapped Out isn't affiliated with any utility or the EPA. Written and reviewed by the Tapped Out team. How we calculate · All sources.