[WaterSystemViolationPulse](/v/watersystemviolationpulse) / compare

# National Institutes Of Health vs Maple Hill Water District: WaterSystemViolationPulse comparison

**National Institutes Of Health's population served of 1,100 is 1.1x Maple Hill Water District's 968 (83rd percentile). National Institutes Of Health is dated 2026-06-01; Maple Hill Water District 2026-07-01.**

Data as of 2026-11-05 · [Compiled by Zalwin](/research/watersystemviolationpulse) from U.S. EPA Safe Drinking Water Information System (SDWIS) via Envirofacts and EPA ECHO Copy citation

Download all 459 WaterSystemViolationPulse records (CSV) — $4.99 →

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## How does National Institutes Of Health compare to Maple Hill Water District?

| Field | National Institutes Of Health | Maple Hill Water District |
|---|---|---|
| Water system | National Institutes Of Health | Maple Hill Water District |
| PWSID | MD1150047 | NC0471025 |
| System type | Non-transient non-community (schools, plants) | Community water system |
| Owner type | Federal government | Local government |
| Population served | 1100 | 968 |
| Location | MD | Maple Hill, NC |
| Contaminant | Chlorite | TTHM |
| Rule group | Disinfectants and disinfection byproducts | Disinfectants and disinfection byproducts |
| Measured | 1.66 MG/L | 0.084 MG/L |
| Compliance period | 2026-06-01 to 2026-06-30 | 2026-07-01 to 2026-09-30 |
| Status | Known, unaddressed | Known, unaddressed |
| Public notice tier | 2 | 2 |
| population served percentile | 83rd | 77th |
| Score | 50/100 | 60/100 |
| Peer rank and all 459 records (CSV) | Every comparable record ranked, with amounts, dates and scores 🔒 Click to unlock → |
| Official source URLs for every peer record | Direct links to each record at its government source 🔒 Click to unlock → |

Official records: [National Institutes Of Health](https://echo.epa.gov/detailed-facility-report?fid=110072079186) · [Maple Hill Water District](https://echo.epa.gov/detailed-facility-report?fid=110012909923)

## Get new violations in your states

WaterSystemViolationPulse emails new health-based violations matching your states, rule groups and system sizes.

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From EPA SDWIS federal data, which lags state records by up to a quarter. A violation is a regulatory finding about a water system, not a statement about current water quality. Verify with the state drinking water program.

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