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Aurora, CO · 603,770 people served · EPA data 2021–2026

Tap water quality in Aurora, Colorado

Aurora's water systems logged 2 health-based EPA violations in 2021–2026, most recently in 2022 — a modest record, with groundwater rule the issue found. For context, Colorado's systems average 2.2 health-based violations each.

C+Fair
Aurora water grade: C+
Fair — our A–F grade from this city's EPA compliance record, relative to Colorado and the nation. How we grade →
Health-based violations, 2021–20262
Groundwater Rule1
Stage 1 Disinfectants And Disinfection Byproducts Rule1
Aurora City Of533,407 served
East Cherry Creek Valley Wsd66,130 served
Poudre Valley Mhc985 served
Collins Aire Mhc946 served
Colorado quality rank#13 / 51 (86.7/100)
Colorado avg hardness185 PPM (very hard)
Want to know what's actually in your Aurora water?

Averages describe states, not your faucet. A certified home water test screens for lead, nitrates, bacteria and dozens of other contaminants — the same categories EPA regulates.

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Aurora tap water FAQ

Is tap water safe to drink in Aurora?

Aurora's systems logged 2 health-based violations in 2021–2026, most commonly groundwater rule. A violation is a red flag for a period of time, not a permanent condition — your utility's current Consumer Confidence Report shows today's status, and a certified home test shows what's at your tap.

Who supplies Aurora's water?

Aurora City Of (serving about 533,407 people); East Cherry Creek Valley Wsd (serving about 66,130 people); Poudre Valley Mhc (serving about 985 people); Collins Aire Mhc (serving about 946 people). Data: EPA Safe Drinking Water Information System, July 2026.

How hard is the water in Aurora?

City-level hardness isn't published in a single federal dataset, but Colorado averages 185 PPM — "very hard" on the USGS scale. Your utility's water quality report lists Aurora's exact hardness, or a $10 test strip tells you in a minute. If it comes back over 120 PPM, see our water softener guidance in the purification calculator.

Do I need a water filter in Aurora?

With 2 health-based violations on record in 2021–2026, a certified filter is reasonable insurance here: reverse osmosis ($150–$1,300 installed, Angi 2026) covers lead, nitrates and PFAS at the tap. Test first ($50–$200) so you buy for what's actually present.

Want to know what's actually in your Aurora water?

Averages describe states, not your faucet. A certified home water test screens for lead, nitrates, bacteria and dozens of other contaminants — the same categories EPA regulates.

Test your water at home

We may earn a commission if you request quotes through this link. It costs you nothing and never affects the data we publish.