Belknap County, New Hampshire
SDWIS compliance plate
Sheet NH001 · Belknap County 255 sys · 16,111 viol · #701/3254
VIOL-SEVERE · HEALTH-LOW · RANK-UPPER · BELOW-PEER · PFAS-CLEAN · SRC-GW · SYS-LARGE · BOOK-FULL
- VIOL-SEVERE 89.8% flagged
- HEALTH-LOW 17.4% health
- RANK-UPPER #701/3254
- BELOW-PEER 1.1 pp cleaner
- PFAS-CLEAN 0.0% detect
- SRC-GW GW lead 98%
- SYS-LARGE 255 systems
- BOOK-FULL 7/7 fields
Nearest flagged-rate peer: Strafford County (+ 1.1 pp flagged-rate)
According to EPA SDWIS county population served used on /counties, Belknap County ranks #701 of 3,254 counties by people served, and #7 of 10 counties in New Hampshire. See methodology · corpus placement.
Belknap County standing, lower-flagged corpus third
Flagged-system rate 89.8% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 17.4% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 0.0% is UCMR5 detect rate at or below the tested-pool lower third (≤ 0.0%) . Population served ranks #701 of 3,254 · #7 of 10 in New Hampshire.
Flagged-rate neighbourhood around Belknap County
Lowest/highest poles plus in-state counties nearest Belknap County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
Compare beyond New Hampshire
Lower-flagged peers for Belknap County
Cross-state counties nearest Belknap County on flagged-system share (89.8%) and cumulative violation count (16,111). In-state neighbours stay on the compliance plate above.
Similar flagged-system rate
Nearest cross-state counties by % of SDWIS systems with at least one violation on record.
Similar violation load
Nearest cross-state counties by cumulative SDWIS violation count (all systems in the county).
Read our methodology · Check your water system - how this data is sourced, computed, and verified.
Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.