Alkalinity (mg/L) (0)
| >40-90 |
| >90-150 |
| >150-350 |
| >350 |
Ammonia + Ammonium (µg N/L) (1)
| >8-15 |
| >15-30 |
| >30-60 |
| >60-100 |
| >100 |
| <8 Detection limit change in 2008 |
|
| <50 Detection limit in 2007 |
Conductivity (µS/cm) (2)
| <320 |
| >320-350 |
| >350-400 |
| >400-500 |
| >500-1000 |
| >1000 |
Ecoli (counts/100 mL) (3)
| <1 |
| 1-50 |
| >50-100 |
| >100-500 |
| >500-1000 |
| >1000 |
| <1 Lake Detection Limit |
|
| <10 Marsh Detection Limit |
Nitrite (µg N/L) (4)
| <1 |
|
| <2 |
| 2-5 |
| >10-20 |
| >20-40 |
| >40 |
| >5-10 |
Nitrate + Nitrite (µg N/L) (5)
| <40 |
|
| 40-400 |
|
| >400-600 |
|
| >600-800 |
| >800-1000 |
| >1000 |
pH (Units) (6)
| <7.0 |
| 7.0-7.5 |
| >7.5-8.0 |
| >8.0-8.5 |
| >8.5-9.0 |
| >9.0 |
Soluble Reactive Phosphorus (µg P/L) (7)
| <0.2 Environment Canada detection limit |
|
| <0.5 |
|
| <2 Detection limit from 2008-2015 |
|
| <4 Detection limit in 2007 |
| 0.2-1.9 |
|
| 0.5-1.9 |
| 2-5 |
|
| 4-5 |
| >5-10 |
| >10-25 |
| >25-50 |
| >50 |
Suspended Solids (mg/L) (8)
| <1 |
| 1-5 |
| >5-10 |
| >10-25 |
| >25-50 |
| >50 |
Turbidity (NTU) (9)
| <0.1 |
|
| 0.1-0.4 |
|
| >0.4-0.7 |
|
| >0.7-1.0 |
|
| >1-5 |
|
| >5 |
Total Phosphorus (µg P/L) (10)
| <3 Detection limit change October 2007 |
| <6 Detection limit in 2007 |
| <3 |
| 3-5 |
| >5-10 |
| >10-30 |
| >30-100 |
| >100 |
NOAA 1m Contours Lake Ontario (11)
|
