Is SPEARFISH's water safe to drink?

SPEARFISH's only violations on record are reporting or monitoring lapses, not a contaminant or treatment-technique failure EPA classifies as health-based. It serves 13,803 people through 4,779 service connections.

How this compares nationally

Out of 12,903 systems in this dataset, SPEARFISH ranks 10,628th by violation burden (18th percentile) - 8 violations total, 0 health-baseds.

How SPEARFISH compares within SD

Among the 74 SD systems in this dataset, the average is 3.0 health-based violations - SPEARFISH's 0 is at or below that. The clean-record guide covers what a comparison like this can hide.

Most recent violation on record

The last violation EPA has on record for SPEARFISH is from 2013-12-01. Last reported to EPA: 06/17/2026.

What this data is and is not

SPEARFISH's numbers here come from its own required reporting to EPA under the Safe Drinking Water Act, not from an independent test of your glass of water. Between the utility's meter and SPEARFISH's customers' taps is household plumbing, invisible to a system-level record ranked 10,628th of 12,903 by violation count. The guide to what this data misses covers that gap.