What's in JOHNSTON CO RWD #3's water?
JOHNSTON CO RWD #3 had a health-based violation within the last five years. The required corrective action was reported, but it happened recently enough to matter. Population served: 2,783, over 1,298 connections.
Ranked against every other system in this dataset
Out of 12,903 systems in this dataset, JOHNSTON CO RWD #3 ranks 7,717th by violation burden (40th percentile) - 26 violations total, 1 health-based.
How JOHNSTON CO RWD #3 compares within OK
Among the 240 OK systems in this dataset, the average is 39.5 health-based violations - JOHNSTON CO RWD #3's 1 is at or below that. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
The last violation EPA has on record for JOHNSTON CO RWD #3 is from 2025-05-10 (health-based: 2025-05-10). Last reported to EPA: 05/13/2026.
What kind of problem, specifically
JOHNSTON CO RWD #3's flagged contaminants and rule violations, grouped by what they actually mean for a filter choice rather than left as EPA's raw code list:
- Lead & copper - flagged from: LEAD AND COPPER RULE REVISIONS
The most severe category on record is lead & copper, which points toward a lead-class filter if you want to address it directly.
What this data is and is not
JOHNSTON CO RWD #3'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. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 26 logged violations can see. The guide to what this data misses covers that gap.