PlainWater
Counties → New Hampshire

Sullivan County, New Hampshire

SDWIS compliance plate

Sheet NH019 · Sullivan County 65 sys · 4,684 viol · #1261/3254

VIOL-SEVERE · HEALTH-LOW · RANK-UPPER · PHOTO-FINISH · PFAS-CLEAN · SRC-GW · SYS-MID · BOOK-FULL

  • VIOL-SEVERE 86.2% flagged
  • HEALTH-LOW 11.3% health
  • RANK-UPPER #1261/3254
  • PHOTO-FINISH ±0.9 pp
  • PFAS-CLEAN 0.0% detect
  • SRC-GW GW lead 95%
  • SYS-MID 65 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Cheshire County (+ 0.9 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Sullivan County ranks #1,261 of 3,254 counties by people served, and #10 of 10 counties in New Hampshire. See methodology · corpus placement.

Sullivan County standing, lower-flagged corpus third

Flagged-system rate 86.2% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 11.3% 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 #1,261 of 3,254 · #10 of 10 in New Hampshire.

Flagged-rate neighbourhood around Sullivan County

Lowest/highest poles plus in-state counties nearest Sullivan County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.

0% 20% 40% 60% 80% 100% Sullivan · this county · lowest Hillsborough · near 86.2% 87.1% 88% 88.6% 89.8% 94.4%

Source: EPA SDWIS (county aggregates) As of 2026-05-15

Water Systems

System Name Population Violations PFAS
Claremont Water Dept 9,000 98 Clean
Newport Water Works 5,000 219 Clean
Village Dist of Eastman 3,400 128 Clean
Charlestown Water Works 2,850 37 -
Sunapee Water Works 1,680 132 -
Springfield Rest Area 1,478 4 -
Fall Mountain Regional Hs 850 12 -
Meriden Village Water Dist 750 111 -
Sullivan County Complex 625 334 -
Georges Mills Water Works 500 20 -
Camp Coniston 498 20 -
Camp Coniston/Kitchen 498 12 -
Sawyer Brook Plaza 400 18 -
Tippicanoe Campground 325 102 -
Grantham Village Sch 303 121 -
Loon Lake Campground 300 12 -
Plainfield Water Dept 284 472 -
Crows Nest Campground 273 0 -
Singing Hills Main Lodge 250 33 -
Mount Royal Academy 217 33 -
Grantham Greenway 200 8 -
Grantham Irving Bluecanoe 200 16 -
Meriden Deli Mart 200 40 -
Northstar Camping Area 190 20 -
Windy Acres 180 118 -
Camp Sunapee/Farmhouse 180 12 -
Camp Sunapee/Chalet 180 0 -
Camp Sunapee/Showerhouse 180 10 -
Camp Sunapee /New House 180 0 -
Pillsbury State Park 160 10 -
Lempster Community Sch 150 88 -
Suna 150 63 -
Unity Elementary Sch 150 231 -
Cornish Elementary Sch 140 236 -
Singing Hills Chapel Complex 135 0 -
Washington Elementary Sch 125 38 -
Camp Hawkeye 110 0 -
Ziggys Pizza 100 34 -
Dollar General Store 22557 100 0 -
Joes Hideaway 100 21 -
Cornish General Store 70 51 -
Bascom Maple Farms 65 0 -
Rum Brook Place 60 116 -
Latva Machine 60 8 -
Meadowview Apts 58 398 -
Meadow Brook at Sunapee 56 178 -
Connecticut River MHP 50 248 -
Morningside Flight Park 50 40 -
Sugar River Mennonite Fllwshp 50 32 -
Gray Ledges 50 60 -

Compare beyond New Hampshire

Lower-flagged peers for Sullivan County

Cross-state counties nearest Sullivan County on flagged-system share (86.2%) and cumulative violation count (4,684). 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.

4 peers

Similar violation load

Nearest cross-state counties by cumulative SDWIS violation count (all systems in the county).

4 peers

Read our methodology · Check your water system - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater

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.