TheJobsMapvs
MWH Treatment vs National Water Services: jobs, pay and hiring compared
As of October 21, 2026, MWH Treatment has 170 open roles in 18 cities and National Water Services has 167 in 132 cities. Every role links to the employer's own careers site.
| Measure | MWH Treatment | National Water Services |
|---|---|---|
| Open roles | 170 | 167 |
| Posted in the last 7 days | 26 | 7 |
| Cities hiring | 18 | 132 |
| Top hiring city | Preston (27) | Arlington (2) |
| Average listed base pay | Not listed | $73k |
| Highest listed base pay | Not listed | $114k |
| Headquarters | Preston, Lancashire, United Kingdom | Fort Myers |
| Founded | 1820 | 1991 |
| Employees | 1,001 to 5,000 | 11 to 50 |
| Leader | Paul Bresnan | ramon lovato |
Pay figures are advertised base salaries (annual USD) on open roles that list pay.
Where MWH Treatment is hiring
- Preston27 roles
- Rickmansworth26 roles
- Manchester25 roles
- Peterborough23 roles
Where National Water Services is hiring
- Arlington2 roles
- Jacksonville2 roles
- Ketchum2 roles
- Richmond2 roles
Common questions
- Which is hiring more, MWH Treatment or National Water Services?
- MWH Treatment has more open roles: 170, compared with 167 at National Water Services, as of October 21, 2026.
- Where are MWH Treatment and National Water Services hiring?
- MWH Treatment is hiring most in Preston, Rickmansworth and Manchester. National Water Services is hiring most in Arlington, Jacksonville and Ketchum.