Weld Water Quality Report
21 cities ranked · Average grade: B · Colorado
Avg Score
75.8
Cities Ranked
21
Health Violations
14
PFAS Detected
3
75.8
County avg score
21
Cities ranked
76%
A or B grade
19%
D or F grade
14
Health violations
3
PFAS detected
Grade Distribution
How Weld cities scored
A
7
33%
Excellent
B
9
43%
Good
C
1
5%
Fair
D
3
14%
Poor
F
1
5%
Failing
Comparison
County vs Colorado average
▲ 9.7 pts above state average
City Map
Water quality across Weld
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Weld
Best cities
Worst cities
County context
431,265
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Weld
Industrial polluters nearby
Facilities reporting the most surface-water releases in Weld, 2023.
Total reported releases to surface water: 431,265 lbs
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
LEPRINO FOODS CO - GREELEY GREELEY, CO80631 | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 409,556 |
CARESTREAM HEALTH COLORADO WINDSOR, CO80550 | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 21,704 |
LOVELAND PRODUCTS GREELEY, CO80631 | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 5 |
SMYRNA READY MIX CONCRETE LLC - DEL CAMINO READY MIX LONGMONT, CO80501 | — | — |
ARC COLORADO INC. LONGMONT, CO80504 | — | — |
+ 5 more facilities
Source: EPA Toxic Release Inventory (TRI) 2023
Full Rankings
All 21 cities in Weld
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Severance | A | 92.3 | 12K | 10 | Unresolved | |
| 2 | Pierce | A | 90.2 | 1K | 65 | Health Unresolved | |
| 3 | Kersey | A- | 88.3 | 2K | 16 | Health Unresolved | |
| 4 | Dacono | A- | 88.1 | 7K | 8 | Health Unresolved | |
| 5 | Firestone | A- | 86.9 | 28K | 16 | Unresolved | |
| 6 | Keenesburg | A- | 86.7 | 5K | 110 | Health Unresolved | |
| 7 | Lochbuie | A- | 86.2 | 7K | 40 | Health Unresolved | |
| 8 | Gilcrest | B+ | 84.9 | 1K | 7 | Health Unresolved | |
| 9 | Lucerne | B+ | 84.2 | 16K | 1 | Unresolved | |
| 10 | Platteville | B+ | 83.4 | 3K | 16 | Unresolved | |
| 11 | Ault | B+ | 81.2 | 4K | 7 | Unresolved | |
| 12 | Evans | B+ | 80 | 21K | 22 | Unresolved | |
| 13 | Johnstown | B | 79 | 25K | 94 | Health Unresolved | |
| 14 | Milliken | B | 77.6 | 9K | 117 | Unresolved | |
| 15 | Eaton | B- | 74.6 | 7K | 13 | Health Unresolved | |
| 16 | Frederick | B- | 73.6 | 18K | 19 | Health Unresolved | |
| 17 | Lasalle | C+ | 69.2 | 2K | 27 | Health Unresolved | |
| 18 | Windsor | D | 48.8 | 30K | 1144 | Health Unresolved | |
| 19 | Hudson | D | 48 | 4K | 973 | Health Unresolved | |
| 20 | Fort Lupton | D | 45 | 14K | 162 | Health Unresolved | |
| 21 | Greeley | F | 44.1 | 141K | 166 | Health Unresolved |